diff --git a/src/services/cache/aware_scheduler.py b/src/services/cache/aware_scheduler.py
index 553f363..7c0d11a 100644
--- a/src/services/cache/aware_scheduler.py
+++ b/src/services/cache/aware_scheduler.py
@@ -36,7 +36,7 @@ from src.core.logger import logger
 from sqlalchemy.orm import Session, selectinload
 
 from src.core.enums import APIFormat
-from src.core.exceptions import ProviderNotAvailableException
+from src.core.exceptions import ModelNotSupportedException, ProviderNotAvailableException
 from src.models.database import (
     ApiKey,
     Model,
@@ -227,19 +227,6 @@ class CacheAwareScheduler:
                 if provider_offset == 0:
                     # 没有找到任何候选，提供友好的错误提示
                     error_msg = f"模型 '{model_name}' 不可用"
-
-                    # 查找相似模型
-                    from src.services.model.mapping_resolver import get_model_mapping_resolver
-
-                    resolver = get_model_mapping_resolver()
-                    similar_models = resolver.find_similar_models(db, model_name, limit=3)
-
-                    if similar_models:
-                        suggestions = [
-                            f"{name} (相似度: {score:.0%})" for name, score in similar_models
-                        ]
-                        error_msg += f"\n\n您可能想使用以下模型:\n  - " + "\n  - ".join(suggestions)
-
                     raise ProviderNotAvailableException(error_msg)
                 break
 
@@ -579,13 +566,20 @@ class CacheAwareScheduler:
 
         target_format = normalize_api_format(api_format)
 
-        # 0. 解析 model_name 到 GlobalModel（用于缓存亲和性的规范化标识）
-        from src.services.model.mapping_resolver import get_model_mapping_resolver
-        mapping_resolver = get_model_mapping_resolver()
-        global_model = await mapping_resolver.get_global_model_by_request(db, model_name, None)
+        # 0. 解析 model_name 到 GlobalModel（直接查找，用户必须使用标准名称）
+        from src.models.database import GlobalModel
+        global_model = (
+            db.query(GlobalModel)
+            .filter(GlobalModel.name == model_name, GlobalModel.is_active == True)
+            .first()
+        )
+
+        if not global_model:
+            logger.warning(f"GlobalModel not found: {model_name}")
+            raise ModelNotSupportedException(model=model_name)
 
         # 使用 GlobalModel.id 作为缓存亲和性的模型标识，确保别名和规范名都能命中同一个缓存
-        global_model_id: str = str(global_model.id) if global_model else model_name
+        global_model_id: str = str(global_model.id)
 
         # 获取合并后的访问限制（ApiKey + User）
         restrictions = self._get_effective_restrictions(user_api_key)
@@ -685,7 +679,6 @@ class CacheAwareScheduler:
             db.query(Provider)
             .options(
                 selectinload(Provider.endpoints).selectinload(ProviderEndpoint.api_keys),
-                selectinload(Provider.model_mappings),
                 # 同时加载 models 和 global_model 关系，以便 get_effective_* 方法能正确继承默认值
                 selectinload(Provider.models).selectinload(Model.global_model),
             )
@@ -715,63 +708,33 @@ class CacheAwareScheduler:
         - 模型支持的能力是全局的，与具体的 Key 无关
         - 如果模型不支持某能力，整个 Provider 的所有 Key 都应该被跳过
 
-        映射回退逻辑：
-        - 如果存在模型映射（mapping），先尝试映射后的模型
-        - 如果映射后的模型因能力不满足而失败，回退尝试原模型
-        - 其他失败原因（如模型不存在、Provider 未实现等）不触发回退
-
         Args:
             db: 数据库会话
             provider: Provider 对象
-            model_name: 模型名称
+            model_name: 模型名称（必须是 GlobalModel.name）
             is_stream: 是否是流式请求，如果为 True 则同时检查流式支持
             capability_requirements: 能力需求（可选），用于检查模型是否支持所需能力
 
         Returns:
             (is_supported, skip_reason, supported_capabilities) - 是否支持、跳过原因、模型支持的能力列表
         """
-        from src.services.model.mapping_resolver import get_model_mapping_resolver
+        from src.models.database import GlobalModel
 
-        mapping_resolver = get_model_mapping_resolver()
-
-        # 获取映射后的模型，同时检查是否发生了映射
-        global_model, is_mapped = await mapping_resolver.get_global_model_with_mapping_info(
-            db, model_name, str(provider.id)
+        # 直接通过 GlobalModel.name 查找
+        global_model = (
+            db.query(GlobalModel)
+            .filter(GlobalModel.name == model_name, GlobalModel.is_active == True)
+            .first()
         )
 
         if not global_model:
             return False, "模型不存在", None
 
-        # 尝试检查映射后的模型
+        # 检查模型支持
         is_supported, skip_reason, caps = await self._check_model_support_for_global_model(
             db, provider, global_model, model_name, is_stream, capability_requirements
         )
 
-        # 如果映射后的模型因能力不满足而失败，且存在映射，则回退尝试原模型
-        if not is_supported and is_mapped and skip_reason and "不支持能力" in skip_reason:
-            logger.debug(
-                f"Provider {provider.name} 映射模型 {global_model.name} 能力不满足，"
-                f"回退尝试原模型 {model_name}"
-            )
-
-            # 获取原模型（不应用映射）
-            original_global_model = await mapping_resolver.get_global_model_direct(db, model_name)
-
-            if original_global_model and original_global_model.id != global_model.id:
-                # 尝试原模型
-                is_supported, skip_reason, caps = await self._check_model_support_for_global_model(
-                    db,
-                    provider,
-                    original_global_model,
-                    model_name,
-                    is_stream,
-                    capability_requirements,
-                )
-                if is_supported:
-                    logger.debug(
-                        f"Provider {provider.name} 原模型 {original_global_model.name} 支持所需能力"
-                    )
-
         return is_supported, skip_reason, caps
 
     async def _check_model_support_for_global_model(
diff --git a/src/services/cache/backend.py b/src/services/cache/backend.py
index 0ab384c..b6d859a 100644
--- a/src/services/cache/backend.py
+++ b/src/services/cache/backend.py
@@ -6,8 +6,7 @@
 2. RedisCache: Redis 缓存（分布式）
 
 使用场景：
-- ModelMappingResolver: 模型映射与别名解析缓存
-- ModelMapper: 模型映射缓存
+- ModelCacheService: 模型解析缓存
 - 其他需要缓存的服务
 """
 
diff --git a/src/services/cache/invalidation.py b/src/services/cache/invalidation.py
index 7e06b30..c789238 100644
--- a/src/services/cache/invalidation.py
+++ b/src/services/cache/invalidation.py
@@ -3,18 +3,14 @@
 
 统一管理各种缓存的失效逻辑，支持：
 1. GlobalModel 变更时失效相关缓存
-2. ModelMapping 变更时失效别名/降级缓存
-3. Model 变更时失效模型映射缓存
-4. 支持同步和异步缓存后端
+2. Model 变更时失效模型映射缓存
+3. 支持同步和异步缓存后端
 """
 
-import asyncio
 from typing import Optional
 
 from src.core.logger import logger
 
-from src.core.logger import logger
-
 
 class CacheInvalidationService:
     """
@@ -25,14 +21,8 @@ class CacheInvalidationService:
 
     def __init__(self):
         """初始化缓存失效服务"""
-        self._mapping_resolver = None
         self._model_mappers = []  # 可能有多个 ModelMapperMiddleware 实例
 
-    def set_mapping_resolver(self, mapping_resolver):
-        """设置模型映射解析器实例"""
-        self._mapping_resolver = mapping_resolver
-        logger.debug(f"[CacheInvalidation] 模型映射解析器已注册 (实例: {id(mapping_resolver)})")
-
     def register_model_mapper(self, model_mapper):
         """注册 ModelMapper 实例"""
         if model_mapper not in self._model_mappers:
@@ -48,37 +38,12 @@ class CacheInvalidationService:
         """
         logger.info(f"[CacheInvalidation] GlobalModel 变更: {model_name}")
 
-        # 异步失效模型解析器中的缓存
-        if self._mapping_resolver:
-            asyncio.create_task(self._mapping_resolver.invalidate_global_model_cache())
-
         # 失效所有 ModelMapper 中与此模型相关的缓存
         for mapper in self._model_mappers:
             # 清空所有缓存（因为不知道哪些 provider 使用了这个模型）
             mapper.clear_cache()
             logger.debug(f"[CacheInvalidation] 已清空 ModelMapper 缓存")
 
-    def on_model_mapping_changed(self, source_model: str, provider_id: Optional[str] = None):
-        """
-        ModelMapping 变更时的缓存失效
-
-        Args:
-            source_model: 变更的源模型名
-            provider_id: 相关 Provider（None 表示全局）
-        """
-        logger.info(f"[CacheInvalidation] ModelMapping 变更: {source_model} (provider={provider_id})")
-
-        if self._mapping_resolver:
-            asyncio.create_task(
-                self._mapping_resolver.invalidate_mapping_cache(source_model, provider_id)
-            )
-
-        for mapper in self._model_mappers:
-            if provider_id:
-                mapper.refresh_cache(provider_id)
-            else:
-                mapper.clear_cache()
-
     def on_model_changed(self, provider_id: str, global_model_id: str):
         """
         Model 变更时的缓存失效
@@ -98,9 +63,6 @@ class CacheInvalidationService:
         """清空所有缓存"""
         logger.info("[CacheInvalidation] 清空所有缓存")
 
-        if self._mapping_resolver:
-            asyncio.create_task(self._mapping_resolver.clear_cache())
-
         for mapper in self._model_mappers:
             mapper.clear_cache()
 
diff --git a/src/services/cache/model_cache.py b/src/services/cache/model_cache.py
index 391100c..1f9486b 100644
--- a/src/services/cache/model_cache.py
+++ b/src/services/cache/model_cache.py
@@ -1,5 +1,5 @@
 """
-Model 映射缓存服务 - 减少模型映射和别名查询
+Model 映射缓存服务 - 减少模型查询
 """
 
 from typing import Optional
@@ -9,8 +9,7 @@ from sqlalchemy.orm import Session
 from src.config.constants import CacheTTL
 from src.core.cache_service import CacheService
 from src.core.logger import logger
-from src.models.database import GlobalModel, Model, ModelMapping
-
+from src.models.database import GlobalModel, Model
 
 
 class ModelCacheService:
@@ -158,56 +157,6 @@ class ModelCacheService:
 
         return global_model
 
-    @staticmethod
-    async def resolve_alias(
-        db: Session, source_model: str, provider_id: Optional[str] = None
-    ) -> Optional[str]:
-        """
-        解析模型别名（带缓存）
-
-        Args:
-            db: 数据库会话
-            source_model: 源模型名称或别名
-            provider_id: Provider ID（可选，用于 Provider 特定别名）
-
-        Returns:
-            目标 GlobalModel ID 或 None
-        """
-        # 构造缓存键
-        if provider_id:
-            cache_key = f"alias:provider:{provider_id}:{source_model}"
-        else:
-            cache_key = f"alias:global:{source_model}"
-
-        # 1. 尝试从缓存获取
-        cached_result = await CacheService.get(cache_key)
-        if cached_result:
-            logger.debug(f"别名缓存命中: {source_model} (provider: {provider_id or 'global'})")
-            return cached_result
-
-        # 2. 缓存未命中，查询数据库
-        query = db.query(ModelMapping).filter(ModelMapping.source_model == source_model)
-
-        if provider_id:
-            # Provider 特定别名优先
-            query = query.filter(ModelMapping.provider_id == provider_id)
-        else:
-            # 全局别名
-            query = query.filter(ModelMapping.provider_id.is_(None))
-
-        mapping = query.first()
-
-        # 3. 写入缓存
-        target_global_model_id = mapping.target_global_model_id if mapping else None
-        await CacheService.set(
-            cache_key, target_global_model_id, ttl_seconds=ModelCacheService.CACHE_TTL
-        )
-
-        if mapping:
-            logger.debug(f"别名已缓存: {source_model} → {target_global_model_id}")
-
-        return target_global_model_id
-
     @staticmethod
     async def invalidate_model_cache(
         model_id: str, provider_id: Optional[str] = None, global_model_id: Optional[str] = None
@@ -237,17 +186,6 @@ class ModelCacheService:
             await CacheService.delete(f"global_model:name:{name}")
         logger.debug(f"GlobalModel 缓存已清除: {global_model_id}")
 
-    @staticmethod
-    async def invalidate_alias_cache(source_model: str, provider_id: Optional[str] = None):
-        """清除别名缓存"""
-        if provider_id:
-            cache_key = f"alias:provider:{provider_id}:{source_model}"
-        else:
-            cache_key = f"alias:global:{source_model}"
-
-        await CacheService.delete(cache_key)
-        logger.debug(f"别名缓存已清除: {source_model}")
-
     @staticmethod
     def _model_to_dict(model: Model) -> dict:
         """将 Model 对象转换为字典"""
@@ -256,6 +194,7 @@ class ModelCacheService:
             "provider_id": model.provider_id,
             "global_model_id": model.global_model_id,
             "provider_model_name": model.provider_model_name,
+            "provider_model_aliases": getattr(model, "provider_model_aliases", None),
             "is_active": model.is_active,
             "is_available": model.is_available if hasattr(model, "is_available") else True,
             "price_per_request": (
@@ -266,6 +205,7 @@ class ModelCacheService:
             "supports_function_calling": model.supports_function_calling,
             "supports_streaming": model.supports_streaming,
             "supports_extended_thinking": model.supports_extended_thinking,
+            "supports_image_generation": getattr(model, "supports_image_generation", None),
             "config": model.config,
         }
 
@@ -277,6 +217,7 @@ class ModelCacheService:
             provider_id=model_dict["provider_id"],
             global_model_id=model_dict["global_model_id"],
             provider_model_name=model_dict["provider_model_name"],
+            provider_model_aliases=model_dict.get("provider_model_aliases"),
             is_active=model_dict["is_active"],
             is_available=model_dict.get("is_available", True),
             price_per_request=model_dict.get("price_per_request"),
@@ -285,6 +226,7 @@ class ModelCacheService:
             supports_function_calling=model_dict.get("supports_function_calling"),
             supports_streaming=model_dict.get("supports_streaming"),
             supports_extended_thinking=model_dict.get("supports_extended_thinking"),
+            supports_image_generation=model_dict.get("supports_image_generation"),
             config=model_dict.get("config"),
         )
         return model
@@ -296,12 +238,11 @@ class ModelCacheService:
             "id": global_model.id,
             "name": global_model.name,
             "display_name": global_model.display_name,
-            "family": global_model.family,
-            "group_id": global_model.group_id,
-            "supports_vision": global_model.supports_vision,
-            "supports_thinking": global_model.supports_thinking,
-            "context_window": global_model.context_window,
-            "max_output_tokens": global_model.max_output_tokens,
+            "default_supports_vision": global_model.default_supports_vision,
+            "default_supports_function_calling": global_model.default_supports_function_calling,
+            "default_supports_streaming": global_model.default_supports_streaming,
+            "default_supports_extended_thinking": global_model.default_supports_extended_thinking,
+            "default_supports_image_generation": global_model.default_supports_image_generation,
             "is_active": global_model.is_active,
             "description": global_model.description,
         }
@@ -313,12 +254,11 @@ class ModelCacheService:
             id=global_model_dict["id"],
             name=global_model_dict["name"],
             display_name=global_model_dict.get("display_name"),
-            family=global_model_dict.get("family"),
-            group_id=global_model_dict.get("group_id"),
-            supports_vision=global_model_dict.get("supports_vision", False),
-            supports_thinking=global_model_dict.get("supports_thinking", False),
-            context_window=global_model_dict.get("context_window"),
-            max_output_tokens=global_model_dict.get("max_output_tokens"),
+            default_supports_vision=global_model_dict.get("default_supports_vision", False),
+            default_supports_function_calling=global_model_dict.get("default_supports_function_calling", False),
+            default_supports_streaming=global_model_dict.get("default_supports_streaming", True),
+            default_supports_extended_thinking=global_model_dict.get("default_supports_extended_thinking", False),
+            default_supports_image_generation=global_model_dict.get("default_supports_image_generation", False),
             is_active=global_model_dict.get("is_active", True),
             description=global_model_dict.get("description"),
         )
diff --git a/src/services/cache/sync.py b/src/services/cache/sync.py
index e3b1c93..47a6e70 100644
--- a/src/services/cache/sync.py
+++ b/src/services/cache/sync.py
@@ -6,7 +6,7 @@
 
 使用场景：
 1. 多实例部署时，确保所有实例的缓存一致性
-2. GlobalModel/ModelMapping 变更时，同步失效所有实例的缓存
+2. GlobalModel/Model 变更时，同步失效所有实例的缓存
 """
 
 import asyncio
@@ -29,7 +29,6 @@ class CacheSyncService:
 
     # Redis 频道名称
     CHANNEL_GLOBAL_MODEL = "cache:invalidate:global_model"
-    CHANNEL_MODEL_MAPPING = "cache:invalidate:model_mapping"
     CHANNEL_MODEL = "cache:invalidate:model"
     CHANNEL_CLEAR_ALL = "cache:invalidate:clear_all"
 
@@ -58,7 +57,6 @@ class CacheSyncService:
             # 订阅所有缓存失效频道
             await self._pubsub.subscribe(
                 self.CHANNEL_GLOBAL_MODEL,
-                self.CHANNEL_MODEL_MAPPING,
                 self.CHANNEL_MODEL,
                 self.CHANNEL_CLEAR_ALL,
             )
@@ -68,7 +66,7 @@ class CacheSyncService:
             self._running = True
 
             logger.info("[CacheSync] 缓存同步服务已启动，订阅频道: "
-                f"{self.CHANNEL_GLOBAL_MODEL}, {self.CHANNEL_MODEL_MAPPING}, "
+                f"{self.CHANNEL_GLOBAL_MODEL}, "
                 f"{self.CHANNEL_MODEL}, {self.CHANNEL_CLEAR_ALL}")
         except Exception as e:
             logger.error(f"[CacheSync] 启动失败: {e}")
@@ -141,14 +139,6 @@ class CacheSyncService:
         """发布 GlobalModel 变更通知"""
         await self._publish(self.CHANNEL_GLOBAL_MODEL, {"model_name": model_name})
 
-    async def publish_model_mapping_changed(
-        self, source_model: str, provider_id: Optional[str] = None
-    ):
-        """发布 ModelMapping 变更通知"""
-        await self._publish(
-            self.CHANNEL_MODEL_MAPPING, {"source_model": source_model, "provider_id": provider_id}
-        )
-
     async def publish_model_changed(self, provider_id: str, global_model_id: str):
         """发布 Model 变更通知"""
         await self._publish(
diff --git a/src/services/model/__init__.py b/src/services/model/__init__.py
index f1c628f..25f3316 100644
--- a/src/services/model/__init__.py
+++ b/src/services/model/__init__.py
@@ -1,19 +1,15 @@
 """
 模型服务模块
 
-包含模型管理、模型映射、成本计算等功能。
+包含模型管理、成本计算等功能。
 """
 
 from src.services.model.cost import ModelCostService
 from src.services.model.global_model import GlobalModelService
-from src.services.model.mapper import ModelMapperMiddleware
-from src.services.model.mapping_resolver import ModelMappingResolver
 from src.services.model.service import ModelService
 
 __all__ = [
     "ModelService",
     "GlobalModelService",
-    "ModelMapperMiddleware",
-    "ModelMappingResolver",
     "ModelCostService",
 ]
diff --git a/src/services/model/cost.py b/src/services/model/cost.py
index 30897cc..4413ae7 100644
--- a/src/services/model/cost.py
+++ b/src/services/model/cost.py
@@ -14,7 +14,7 @@ from typing import Dict, Optional, Tuple, Union
 from sqlalchemy.orm import Session
 
 from src.core.logger import logger
-from src.models.database import GlobalModel, Model, ModelMapping, Provider
+from src.models.database import GlobalModel, Model, Provider
 
 
 ProviderRef = Union[str, Provider, None]
@@ -161,16 +161,11 @@ class ModelCostService:
         result = None
 
         if provider_obj:
-            from src.services.model.mapping_resolver import resolve_model_to_global_name
-
-            global_model_name = await resolve_model_to_global_name(
-                self.db, model, provider_obj.id
-            )
-
+            # 直接通过 GlobalModel.name 查找
             global_model = (
                 self.db.query(GlobalModel)
                 .filter(
-                    GlobalModel.name == global_model_name,
+                    GlobalModel.name == model,
                     GlobalModel.is_active == True,
                 )
                 .first()
@@ -226,17 +221,14 @@ class ModelCostService:
         注意：如果模型配置了阶梯计费，此方法返回第一个阶梯的价格作为默认值。
         实际计费时应使用 compute_cost_with_tiered_pricing 方法。
 
-        计费逻辑（基于 mapping_type）:
-        1. 查找 ModelMapping（如果存在）
-        2. 如果 mapping_type='alias'：使用目标 GlobalModel 的价格
-        3. 如果 mapping_type='mapping'：尝试使用 source_model 对应的 GlobalModel 价格
-           - 如果 source_model 对应的 GlobalModel 存在且有 Model 实现，使用那个价格
-           - 否则回退到目标 GlobalModel 的价格
-        4. 如果没有找到任何 ModelMapping，尝试直接匹配 GlobalModel.name
+        计费逻辑:
+        1. 直接通过 GlobalModel.name 匹配
+        2. 查找该 Provider 的 Model 实现
+        3. 获取价格配置
 
         Args:
             provider: Provider 对象或提供商名称
-            model: 用户请求的模型名（可能是 GlobalModel.name 或别名）
+            model: 用户请求的模型名（必须是 GlobalModel.name）
 
         Returns:
             (input_price, output_price) 元组
@@ -253,136 +245,37 @@ class ModelCostService:
         output_price = None
 
         if provider_obj:
-            # 步骤 1: 查找 ModelMapping 以确定 mapping_type
-            from src.models.database import ModelMapping
-
-            mapping = None
-            # 先查 Provider 特定映射
-            mapping = (
-                self.db.query(ModelMapping)
+            # 直接通过 GlobalModel.name 查找（用户必须使用标准模型名称）
+            global_model = (
+                self.db.query(GlobalModel)
                 .filter(
-                    ModelMapping.source_model == model,
-                    ModelMapping.provider_id == provider_obj.id,
-                    ModelMapping.is_active == True,
+                    GlobalModel.name == model,
+                    GlobalModel.is_active == True,
                 )
                 .first()
             )
-            # 再查全局映射
-            if not mapping:
-                mapping = (
-                    self.db.query(ModelMapping)
+            if global_model:
+                model_obj = (
+                    self.db.query(Model)
                     .filter(
-                        ModelMapping.source_model == model,
-                        ModelMapping.provider_id.is_(None),
-                        ModelMapping.is_active == True,
+                        Model.provider_id == provider_obj.id,
+                        Model.global_model_id == global_model.id,
+                        Model.is_active == True,
                     )
                     .first()
                 )
-
-            if mapping:
-                # 有映射，根据 mapping_type 决定计费模型
-                if mapping.mapping_type == "mapping":
-                    # mapping 模式：尝试使用 source_model 对应的 GlobalModel 价格
-                    source_global_model = (
-                        self.db.query(GlobalModel)
-                        .filter(
-                            GlobalModel.name == model,
-                            GlobalModel.is_active == True,
-                        )
-                        .first()
-                    )
-                    if source_global_model:
-                        source_model_obj = (
-                            self.db.query(Model)
-                            .filter(
-                                Model.provider_id == provider_obj.id,
-                                Model.global_model_id == source_global_model.id,
-                                Model.is_active == True,
-                            )
-                            .first()
-                        )
-                        if source_model_obj:
-                            # 检查是否有阶梯计费
-                            tiered = source_model_obj.get_effective_tiered_pricing()
-                            if tiered and tiered.get("tiers"):
-                                first_tier = tiered["tiers"][0]
-                                input_price = first_tier.get("input_price_per_1m", 0)
-                                output_price = first_tier.get("output_price_per_1m", 0)
-                            else:
-                                input_price = source_model_obj.get_effective_input_price()
-                                output_price = source_model_obj.get_effective_output_price()
-                            logger.debug(f"[mapping模式] 使用源模型价格: {model} "
-                                f"(输入: ${input_price}/M, 输出: ${output_price}/M)")
-
-                # alias 模式或 mapping 模式未找到源模型价格：使用目标 GlobalModel 价格
-                if input_price is None:
-                    target_global_model = (
-                        self.db.query(GlobalModel)
-                        .filter(
-                            GlobalModel.id == mapping.target_global_model_id,
-                            GlobalModel.is_active == True,
-                        )
-                        .first()
-                    )
-                    if target_global_model:
-                        target_model_obj = (
-                            self.db.query(Model)
-                            .filter(
-                                Model.provider_id == provider_obj.id,
-                                Model.global_model_id == target_global_model.id,
-                                Model.is_active == True,
-                            )
-                            .first()
-                        )
-                        if target_model_obj:
-                            # 检查是否有阶梯计费
-                            tiered = target_model_obj.get_effective_tiered_pricing()
-                            if tiered and tiered.get("tiers"):
-                                first_tier = tiered["tiers"][0]
-                                input_price = first_tier.get("input_price_per_1m", 0)
-                                output_price = first_tier.get("output_price_per_1m", 0)
-                            else:
-                                input_price = target_model_obj.get_effective_input_price()
-                                output_price = target_model_obj.get_effective_output_price()
-                            mode_label = (
-                                "alias模式"
-                                if mapping.mapping_type == "alias"
-                                else "mapping模式(回退)"
-                            )
-                            logger.debug(f"[{mode_label}] 使用目标模型价格: {model} -> {target_global_model.name} "
-                                f"(输入: ${input_price}/M, 输出: ${output_price}/M)")
-            else:
-                # 没有映射，尝试直接匹配 GlobalModel.name
-                global_model = (
-                    self.db.query(GlobalModel)
-                    .filter(
-                        GlobalModel.name == model,
-                        GlobalModel.is_active == True,
-                    )
-                    .first()
-                )
-                if global_model:
-                    model_obj = (
-                        self.db.query(Model)
-                        .filter(
-                            Model.provider_id == provider_obj.id,
-                            Model.global_model_id == global_model.id,
-                            Model.is_active == True,
-                        )
-                        .first()
-                    )
-                    if model_obj:
-                        # 检查是否有阶梯计费
-                        tiered = model_obj.get_effective_tiered_pricing()
-                        if tiered and tiered.get("tiers"):
-                            first_tier = tiered["tiers"][0]
-                            input_price = first_tier.get("input_price_per_1m", 0)
-                            output_price = first_tier.get("output_price_per_1m", 0)
-                        else:
-                            input_price = model_obj.get_effective_input_price()
-                            output_price = model_obj.get_effective_output_price()
-                        logger.debug(f"找到模型价格配置: {provider_name}/{model} "
-                            f"(输入: ${input_price}/M, 输出: ${output_price}/M)")
+                if model_obj:
+                    # 检查是否有阶梯计费
+                    tiered = model_obj.get_effective_tiered_pricing()
+                    if tiered and tiered.get("tiers"):
+                        first_tier = tiered["tiers"][0]
+                        input_price = first_tier.get("input_price_per_1m", 0)
+                        output_price = first_tier.get("output_price_per_1m", 0)
+                    else:
+                        input_price = model_obj.get_effective_input_price()
+                        output_price = model_obj.get_effective_output_price()
+                    logger.debug(f"找到模型价格配置: {provider_name}/{model} "
+                        f"(输入: ${input_price}/M, 输出: ${output_price}/M)")
 
         # 如果没有找到价格配置，使用 0.0 并记录警告
         if input_price is None:
@@ -404,15 +297,14 @@ class ModelCostService:
         """
         返回给定 provider/model 的 (input_price, output_price)。
 
-        新架构逻辑:
-        1. 使用 ModelMappingResolver 解析别名（如果是）
-        2. 解析为 GlobalModel.name
-        3. 查找该 Provider 的 Model 实现
-        4. 获取价格配置
+        逻辑:
+        1. 直接通过 GlobalModel.name 匹配
+        2. 查找该 Provider 的 Model 实现
+        3. 获取价格配置
 
         Args:
             provider: Provider 对象或提供商名称
-            model: 用户请求的模型名（可能是 GlobalModel.name 或别名）
+            model: 用户请求的模型名（必须是 GlobalModel.name）
 
         Returns:
             (input_price, output_price) 元组
@@ -434,15 +326,9 @@ class ModelCostService:
         """
         异步版本: 返回缓存创建/读取价格（每 1M tokens）。
 
-        新架构逻辑:
-        1. 使用 ModelMappingResolver 解析别名（如果是）
-        2. 解析为 GlobalModel.name
-        3. 查找该 Provider 的 Model 实现
-        4. 获取缓存价格配置
-
         Args:
             provider: Provider 对象或提供商名称
-            model: 用户请求的模型名（可能是 GlobalModel.name 或别名）
+            model: 用户请求的模型名（必须是 GlobalModel.name）
             input_price: 基础输入价格（用于 Claude 模型的默认估算）
 
         Returns:
@@ -460,22 +346,17 @@ class ModelCostService:
         cache_read_price = None
 
         if provider_obj:
-            # 步骤 1: 检查是否是别名
-            from src.services.model.mapping_resolver import resolve_model_to_global_name
-
-            global_model_name = await resolve_model_to_global_name(self.db, model, provider_obj.id)
-
-            # 步骤 2: 查找 GlobalModel
+            # 直接通过 GlobalModel.name 查找（用户必须使用标准模型名称）
             global_model = (
                 self.db.query(GlobalModel)
                 .filter(
-                    GlobalModel.name == global_model_name,
+                    GlobalModel.name == model,
                     GlobalModel.is_active == True,
                 )
                 .first()
             )
 
-            # 步骤 3: 查找该 Provider 的 Model 实现
+            # 查找该 Provider 的 Model 实现
             if global_model:
                 model_obj = (
                     self.db.query(Model)
@@ -517,15 +398,9 @@ class ModelCostService:
         """
         异步版本: 返回按次计费价格（每次请求的固定费用）。
 
-        新架构逻辑:
-        1. 使用 ModelMappingResolver 解析别名（如果是）
-        2. 解析为 GlobalModel.name
-        3. 查找该 Provider 的 Model 实现
-        4. 获取按次计费价格配置
-
         Args:
             provider: Provider 对象或提供商名称
-            model: 用户请求的模型名（可能是 GlobalModel.name 或别名）
+            model: 用户请求的模型名（必须是 GlobalModel.name）
 
         Returns:
             按次计费价格，如果没有配置则返回 None
@@ -534,22 +409,17 @@ class ModelCostService:
         price_per_request = None
 
         if provider_obj:
-            # 步骤 1: 检查是否是别名
-            from src.services.model.mapping_resolver import resolve_model_to_global_name
-
-            global_model_name = await resolve_model_to_global_name(self.db, model, provider_obj.id)
-
-            # 步骤 2: 查找 GlobalModel
+            # 直接通过 GlobalModel.name 查找（用户必须使用标准模型名称）
             global_model = (
                 self.db.query(GlobalModel)
                 .filter(
-                    GlobalModel.name == global_model_name,
+                    GlobalModel.name == model,
                     GlobalModel.is_active == True,
                 )
                 .first()
             )
 
-            # 步骤 3: 查找该 Provider 的 Model 实现
+            # 查找该 Provider 的 Model 实现
             if global_model:
                 model_obj = (
                     self.db.query(Model)
@@ -595,15 +465,14 @@ class ModelCostService:
         """
         返回缓存创建/读取价格（每 1M tokens）。
 
-        新架构逻辑:
-        1. 使用 ModelMappingResolver 解析别名（如果是）
-        2. 解析为 GlobalModel.name
-        3. 查找该 Provider 的 Model 实现
-        4. 获取缓存价格配置
+        逻辑:
+        1. 直接通过 GlobalModel.name 匹配
+        2. 查找该 Provider 的 Model 实现
+        3. 获取缓存价格配置
 
         Args:
             provider: Provider 对象或提供商名称
-            model: 用户请求的模型名（可能是 GlobalModel.name 或别名）
+            model: 用户请求的模型名（必须是 GlobalModel.name）
             input_price: 基础输入价格（用于 Claude 模型的默认估算）
 
         Returns:
diff --git a/src/services/model/global_model.py b/src/services/model/global_model.py
index 5d5f554..ef98614 100644
--- a/src/services/model/global_model.py
+++ b/src/services/model/global_model.py
@@ -11,7 +11,7 @@ from sqlalchemy.orm import Session, joinedload
 
 from src.core.exceptions import InvalidRequestException, NotFoundException
 from src.core.logger import logger
-from src.models.database import GlobalModel, Model, ModelMapping
+from src.models.database import GlobalModel, Model
 from src.models.pydantic_models import GlobalModelUpdate
 
 
diff --git a/src/services/model/mapper.py b/src/services/model/mapper.py
index e1be4f9..c14f59f 100644
--- a/src/services/model/mapper.py
+++ b/src/services/model/mapper.py
@@ -5,18 +5,13 @@
 
 from typing import Dict, List, Optional
 
-from sqlalchemy.orm import Session
+from sqlalchemy.orm import Session, joinedload
 
 from src.core.cache_utils import SyncLRUCache
 from src.core.logger import logger
 from src.models.claude import ClaudeMessagesRequest
-from src.models.database import GlobalModel, Model, ModelMapping, Provider, ProviderEndpoint
+from src.models.database import GlobalModel, Model, Provider, ProviderEndpoint
 from src.services.cache.model_cache import ModelCacheService
-from src.services.model.mapping_resolver import (
-    get_model_mapping_resolver,
-    resolve_model_to_global_name,
-)
-
 
 
 class ModelMapperMiddleware:
@@ -71,10 +66,10 @@ class ModelMapperMiddleware:
         if mapping:
             # 应用映射
             original_model = request.model
-            request.model = mapping.model.provider_model_name
+            request.model = mapping.model.select_provider_model_name()
 
             logger.debug(f"Applied model mapping for provider {provider.name}: "
-                f"{original_model} -> {mapping.model.provider_model_name}")
+                f"{original_model} -> {request.model}")
         else:
             # 没有找到映射，使用原始模型名
             logger.debug(f"No model mapping found for {source_model} with provider {provider.name}, "
@@ -84,17 +79,16 @@ class ModelMapperMiddleware:
 
     async def get_mapping(
         self, source_model: str, provider_id: str
-    ) -> Optional[ModelMapping]:  # UUID
+    ) -> Optional[object]:
         """
         获取模型映射
 
-        优化后逻辑:
-        1. 使用统一的 ModelMappingResolver 解析别名（带缓存）
-        2. 通过 GlobalModel 找到该 Provider 的 Model 实现
-        3. 使用独立的映射缓存
+        简化后的逻辑:
+        1. 通过 GlobalModel.name 直接查找
+        2. 找到 GlobalModel 后，查找该 Provider 的 Model 实现
 
         Args:
-            source_model: 用户请求的模型名或别名
+            source_model: 用户请求的模型名（必须是 GlobalModel.name）
             provider_id: 提供商ID (UUID)
 
         Returns:
@@ -107,62 +101,59 @@ class ModelMapperMiddleware:
 
         mapping = None
 
-        # 步骤 1 & 2: 通过统一的模型映射解析服务
-        mapping_resolver = get_model_mapping_resolver()
-        global_model = await mapping_resolver.get_global_model_by_request(
-            self.db, source_model, provider_id
+        # 步骤 1: 直接通过名称查找 GlobalModel
+        global_model = (
+            self.db.query(GlobalModel)
+            .filter(GlobalModel.name == source_model, GlobalModel.is_active == True)
+            .first()
         )
 
         if not global_model:
-            logger.debug(f"GlobalModel not found: {source_model} (provider={provider_id[:8]}...)")
+            logger.debug(f"GlobalModel not found: {source_model}")
             self._cache[cache_key] = None
             return None
 
-        # 步骤 3: 查找该 Provider 是否有实现这个 GlobalModel 的 Model（使用缓存）
+        # 步骤 2: 查找该 Provider 是否有实现这个 GlobalModel 的 Model（使用缓存）
         model = await ModelCacheService.get_model_by_provider_and_global_model(
             self.db, provider_id, global_model.id
         )
 
         if model:
-            # 只有当模型名发生变化时才返回映射
-            if model.provider_model_name != source_model:
-                mapping = type(
-                    "obj",
-                    (object,),
-                    {
-                        "source_model": source_model,
-                        "model": model,
-                        "is_active": True,
-                        "provider_id": provider_id,
-                    },
-                )()
+            # 创建映射对象
+            mapping = type(
+                "obj",
+                (object,),
+                {
+                    "source_model": source_model,
+                    "model": model,
+                    "is_active": True,
+                    "provider_id": provider_id,
+                },
+            )()
 
-                logger.debug(f"Found model mapping: {source_model} -> {model.provider_model_name} "
-                    f"(provider={provider_id[:8]}...)")
-            else:
-                logger.debug(f"Model found but no name change: {source_model} (provider={provider_id[:8]}...)")
+            logger.debug(f"Found model mapping: {source_model} -> {model.provider_model_name} "
+                f"(provider={provider_id[:8]}...)")
 
         # 缓存结果
         self._cache[cache_key] = mapping
 
         return mapping
 
-    def get_all_mappings(self, provider_id: str) -> List[ModelMapping]:  # UUID
+    def get_all_mappings(self, provider_id: str) -> List[object]:
         """
         获取提供商的所有可用模型(通过 GlobalModel)
 
-        方案 A: 返回该 Provider 所有可用的 GlobalModel
-
         Args:
             provider_id: 提供商ID (UUID)
 
         Returns:
-            模型映射列表（模拟的 ModelMapping 对象列表）
+            模型映射列表
         """
-        # 查询该 Provider 的所有活跃 Model
+        # 查询该 Provider 的所有活跃 Model（使用 joinedload 避免 N+1）
         models = (
             self.db.query(Model)
             .join(GlobalModel)
+            .options(joinedload(Model.global_model))
             .filter(
                 Model.provider_id == provider_id,
                 Model.is_active == True,
@@ -171,7 +162,7 @@ class ModelMapperMiddleware:
             .all()
         )
 
-        # 构造兼容的 ModelMapping 对象列表
+        # 构造兼容的映射对象列表
         mappings = []
         for model in models:
             mapping = type(
@@ -188,7 +179,7 @@ class ModelMapperMiddleware:
 
         return mappings
 
-    def get_supported_models(self, provider_id: str) -> List[str]:  # UUID
+    def get_supported_models(self, provider_id: str) -> List[str]:
         """
         获取提供商支持的所有源模型名
 
@@ -223,15 +214,6 @@ class ModelMapperMiddleware:
         if not mapping.is_active:
             return False, f"Model mapping for {request.model} is disabled"
 
-        # 不限制max_tokens，作为中转服务不应该限制用户的请求
-        # if request.max_tokens and request.max_tokens > mapping.max_output_tokens:
-        #     return False, (
-        #         f"Requested max_tokens {request.max_tokens} exceeds limit "
-        #         f"{mapping.max_output_tokens} for model {request.model}"
-        #     )
-
-        # 可以添加更多验证逻辑，比如检查输入长度等
-
         return True, None
 
     def clear_cache(self):
@@ -239,7 +221,7 @@ class ModelMapperMiddleware:
         self._cache.clear()
         logger.debug("Model mapping cache cleared")
 
-    def refresh_cache(self, provider_id: Optional[str] = None):  # UUID
+    def refresh_cache(self, provider_id: Optional[str] = None):
         """
         刷新缓存
 
@@ -285,16 +267,10 @@ class ModelRoutingMiddleware:
         """
         根据模型名选择提供商
 
-        逻辑：
-        1. 如果指定了提供商，使用指定的提供商
-        2. 如果没指定，使用默认提供商
-        3. 选定提供商后，会检查该提供商的模型映射（在apply_mapping中处理）
-        4. 如果指定了allowed_api_formats，只选择符合格式的提供商
-
         Args:
             model_name: 请求的模型名
             preferred_provider: 首选提供商名称
-            allowed_api_formats: 允许的API格式列表（如 ['CLAUDE', 'CLAUDE_CLI']）
+            allowed_api_formats: 允许的API格式列表
             request_id: 请求ID（用于日志关联）
 
         Returns:
@@ -313,14 +289,12 @@ class ModelRoutingMiddleware:
             if provider:
                 # 检查API格式 - 从 endpoints 中检查
                 if allowed_api_formats:
-                    # 检查是否有符合要求的活跃端点
                     has_matching_endpoint = any(
                         ep.is_active and ep.api_format and ep.api_format in allowed_api_formats
                         for ep in provider.endpoints
                     )
                     if not has_matching_endpoint:
                         logger.warning(f"Specified provider {provider.name} has no active endpoints with allowed API formats ({allowed_api_formats})")
-                        # 不返回该提供商，继续查找
                     else:
                         logger.debug(f"  └─ {request_prefix}使用指定提供商: {provider.name} | 模型:{model_name}")
                         return provider
@@ -330,10 +304,9 @@ class ModelRoutingMiddleware:
             else:
                 logger.warning(f"Specified provider {preferred_provider} not found or inactive")
 
-        # 2. 查找优先级最高的活动提供商（provider_priority 最小）
+        # 2. 查找优先级最高的活动提供商
         query = self.db.query(Provider).filter(Provider.is_active == True)
 
-        # 如果指定了API格式过滤，添加过滤条件 - 检查是否有符合要求的 endpoint
         if allowed_api_formats:
             query = (
                 query.join(ProviderEndpoint)
@@ -344,32 +317,27 @@ class ModelRoutingMiddleware:
                 .distinct()
             )
 
-        # 按 provider_priority 排序，优先级最高（数字最小）的在前
         best_provider = query.order_by(Provider.provider_priority.asc(), Provider.id.asc()).first()
 
         if best_provider:
             logger.debug(f"  └─ {request_prefix}使用优先级最高提供商: {best_provider.name} (priority:{best_provider.provider_priority}) | 模型:{model_name}")
             return best_provider
 
-        # 3. 没有任何活动提供商
         if allowed_api_formats:
-            logger.error(f"No active providers found with allowed API formats {allowed_api_formats}. Please configure at least one provider.")
+            logger.error(f"No active providers found with allowed API formats {allowed_api_formats}.")
         else:
-            logger.error("No active providers found. Please configure at least one provider.")
+            logger.error("No active providers found.")
         return None
 
     def get_available_models(self) -> Dict[str, List[str]]:
         """
         获取所有可用的模型及其提供商
 
-        方案 A: 基于 GlobalModel 查询
-
         Returns:
             字典，键为 GlobalModel.name，值为支持该模型的提供商名列表
         """
         result = {}
 
-        # 查询所有活跃的 GlobalModel 及其 Provider
         models = (
             self.db.query(GlobalModel.name, Provider.name)
             .join(Model, GlobalModel.id == Model.global_model_id)
@@ -392,28 +360,23 @@ class ModelRoutingMiddleware:
         """
         获取某个模型最便宜的提供商
 
-        方案 A: 通过 GlobalModel 查找
-
         Args:
-            model_name: GlobalModel 名称或别名
+            model_name: GlobalModel 名称
 
         Returns:
             最便宜的提供商
         """
-        # 步骤 1: 解析模型名
-        global_model_name = await resolve_model_to_global_name(self.db, model_name)
-
-        # 步骤 2: 查找 GlobalModel
+        # 直接查找 GlobalModel
         global_model = (
             self.db.query(GlobalModel)
-            .filter(GlobalModel.name == global_model_name, GlobalModel.is_active == True)
+            .filter(GlobalModel.name == model_name, GlobalModel.is_active == True)
             .first()
         )
 
         if not global_model:
             return None
 
-        # 步骤 3: 查询所有支持该模型的 Provider 及其价格
+        # 查询所有支持该模型的 Provider 及其价格
         models_with_providers = (
             self.db.query(Provider, Model)
             .join(Model, Provider.id == Model.provider_id)
@@ -428,15 +391,16 @@ class ModelRoutingMiddleware:
         if not models_with_providers:
             return None
 
-        # 按总价格排序（输入+输出价格）
+        # 按总价格排序
         cheapest = min(
-            models_with_providers, key=lambda x: x[1].input_price_per_1m + x[1].output_price_per_1m
+            models_with_providers,
+            key=lambda x: x[1].get_effective_input_price() + x[1].get_effective_output_price()
         )
 
         provider = cheapest[0]
         model = cheapest[1]
 
         logger.debug(f"Selected cheapest provider {provider.name} for model {model_name} "
-            f"(input: ${model.input_price_per_1m}/M, output: ${model.output_price_per_1m}/M)")
+            f"(input: ${model.get_effective_input_price()}/M, output: ${model.get_effective_output_price()}/M)")
 
         return provider
diff --git a/src/services/model/service.py b/src/services/model/service.py
index 7e73ca7..3702750 100644
--- a/src/services/model/service.py
+++ b/src/services/model/service.py
@@ -50,6 +50,7 @@ class ModelService:
                 provider_id=provider_id,
                 global_model_id=model_data.global_model_id,
                 provider_model_name=model_data.provider_model_name,
+                provider_model_aliases=model_data.provider_model_aliases,
                 price_per_request=model_data.price_per_request,
                 tiered_pricing=model_data.tiered_pricing,
                 supports_vision=model_data.supports_vision,
@@ -191,7 +192,6 @@ class ModelService:
         新架构删除逻辑：
         - Model 只是 Provider 对 GlobalModel 的实现，删除不影响 GlobalModel
         - 检查是否是该 GlobalModel 的最后一个实现（如果是，警告但允许删除）
-        - 不检查 ModelMapping（映射是 GlobalModel 之间的关系，别名也统一存储在此表中）
         """
         model = db.query(Model).filter(Model.id == model_id).first()
         if not model:
@@ -326,6 +326,7 @@ class ModelService:
             provider_id=model.provider_id,
             global_model_id=model.global_model_id,
             provider_model_name=model.provider_model_name,
+            provider_model_aliases=model.provider_model_aliases,
             # 原始配置值（可能为空）
             price_per_request=model.price_per_request,
             tiered_pricing=model.tiered_pricing,
diff --git a/src/services/provider/service.py b/src/services/provider/service.py
index 2246529..11fcd1b 100644
--- a/src/services/provider/service.py
+++ b/src/services/provider/service.py
@@ -7,13 +7,11 @@ from typing import Dict
 
 from sqlalchemy.orm import Session
 
-from src.core.logger import logger
 from src.models.database import GlobalModel, Model, Provider
 from src.services.model.cost import ModelCostService
 from src.services.model.mapper import ModelMapperMiddleware, ModelRoutingMiddleware
 
 
-
 class ProviderService:
     """提供商服务类"""
 
@@ -34,30 +32,15 @@ class ProviderService:
         检查模型是否可用（严格白名单模式）
 
         Args:
-            model_name: 模型名称
+            model_name: 模型名称（必须是 GlobalModel.name）
 
         Returns:
             Model对象如果存在且激活，否则None
         """
-        # 首先检查是否有直接的模型记录
-        model = (
-            self.db.query(Model)
-            .filter(Model.provider_model_name == model_name, Model.is_active == True)
-            .first()
-        )
-
-        if model:
-            return model
-
-        # 方案 A：检查是否是别名（全局别名系统）
-        from src.services.model.mapping_resolver import resolve_model_to_global_name
-
-        global_model_name = await resolve_model_to_global_name(self.db, model_name)
-
-        # 查找 GlobalModel
+        # 直接查找 GlobalModel
         global_model = (
             self.db.query(GlobalModel)
-            .filter(GlobalModel.name == global_model_name, GlobalModel.is_active == True)
+            .filter(GlobalModel.name == model_name, GlobalModel.is_active == True)
             .first()
         )
 
@@ -79,34 +62,15 @@ class ProviderService:
 
         Args:
             provider_id: 提供商ID
-            model_name: 模型名称
+            model_name: 模型名称（必须是 GlobalModel.name）
 
         Returns:
             Model对象如果该提供商支持该模型且激活，否则None
         """
-        # 首先检查该提供商下是否有直接的模型记录
-        model = (
-            self.db.query(Model)
-            .filter(
-                Model.provider_id == provider_id,
-                Model.provider_model_name == model_name,
-                Model.is_active == True,
-            )
-            .first()
-        )
-
-        if model:
-            return model
-
-        # 方案 A：检查是否是别名
-        from src.services.model.mapping_resolver import resolve_model_to_global_name
-
-        global_model_name = await resolve_model_to_global_name(self.db, model_name, provider_id)
-
-        # 查找 GlobalModel
+        # 直接查找 GlobalModel
         global_model = (
             self.db.query(GlobalModel)
-            .filter(GlobalModel.name == global_model_name, GlobalModel.is_active == True)
+            .filter(GlobalModel.name == model_name, GlobalModel.is_active == True)
             .first()
         )
 
@@ -148,12 +112,19 @@ class ProviderService:
         获取所有可用的模型
 
         Returns:
-            模型和支持的提供商映射
+            字典，键为模型名，值为提供商列表
         """
         return self.router.get_available_models()
 
-    def clear_cache(self):
-        """清空缓存"""
-        self.mapper.clear_cache()
-        self.cost_service.clear_cache()
-        logger.info("Provider service cache cleared")
+    def select_provider(self, model_name: str, preferred_provider=None):
+        """
+        选择提供商
+
+        Args:
+            model_name: 模型名
+            preferred_provider: 首选提供商
+
+        Returns:
+            Provider对象
+        """
+        return self.router.select_provider(model_name, preferred_provider)
diff --git a/src/services/usage/service.py b/src/services/usage/service.py
index b4a14cf..f7fc7aa 100644
--- a/src/services/usage/service.py
+++ b/src/services/usage/service.py
@@ -26,11 +26,10 @@ class UsageService:
     ) -> tuple[float, float]:
         """异步获取模型价格（输入价格，输出价格）每1M tokens
 
-        新架构查找逻辑：
-        1. 使用 ModelMappingResolver 解析别名（如果是）
-        2. 解析为 GlobalModel.name
-        3. 查找该 Provider 的 Model 实现并获取价格
-        4. 如果找不到则使用系统默认价格
+        查找逻辑：
+        1. 直接通过 GlobalModel.name 匹配
+        2. 查找该 Provider 的 Model 实现并获取价格
+        3. 如果找不到则使用系统默认价格
         """
 
         service = ModelCostService(db)
@@ -40,11 +39,10 @@ class UsageService:
     def get_model_price(cls, db: Session, provider: str, model: str) -> tuple[float, float]:
         """获取模型价格（输入价格，输出价格）每1M tokens
 
-        新架构查找逻辑：
-        1. 使用 ModelMappingResolver 解析别名（如果是）
-        2. 解析为 GlobalModel.name
-        3. 查找该 Provider 的 Model 实现并获取价格
-        4. 如果找不到则使用系统默认价格
+        查找逻辑：
+        1. 直接通过 GlobalModel.name 匹配
+        2. 查找该 Provider 的 Model 实现并获取价格
+        3. 如果找不到则使用系统默认价格
         """
 
         service = ModelCostService(db)