diff --git a/packages/services/conversation-service/src/infrastructure/agents/coordinator/context-injector.service.ts b/packages/services/conversation-service/src/infrastructure/agents/coordinator/context-injector.service.ts
index 809ac97..35935fc 100644
--- a/packages/services/conversation-service/src/infrastructure/agents/coordinator/context-injector.service.ts
+++ b/packages/services/conversation-service/src/infrastructure/agents/coordinator/context-injector.service.ts
@@ -480,7 +480,7 @@ export class ContextInjectorService {
 
       // Use Claude to summarize the older messages
       const summaryResponse = await anthropicClient.messages.create({
-        model: 'claude-haiku-3-5-20241022', // Use Haiku for cost efficiency
+        model: 'claude-haiku-4-5-20251001', // Use Haiku for cost efficiency
         system: '你是对话摘要专家。请将以下对话历史压缩为简洁的摘要，保留所有关键信息（用户个人信息、评估结果、重要决策）。',
         messages: [
           {
diff --git a/packages/services/conversation-service/src/infrastructure/agents/types/agent.types.ts b/packages/services/conversation-service/src/infrastructure/agents/types/agent.types.ts
index e7d923b..cd0b953 100644
--- a/packages/services/conversation-service/src/infrastructure/agents/types/agent.types.ts
+++ b/packages/services/conversation-service/src/infrastructure/agents/types/agent.types.ts
@@ -18,7 +18,7 @@ export enum SpecialistAgentType {
 }
 
 /** Agent 模型选择 */
-export type AgentModel = 'claude-sonnet-4-20250514' | 'claude-haiku-3-5-20241022';
+export type AgentModel = 'claude-sonnet-4-20250514' | 'claude-haiku-4-5-20251001';
 
 /** Agent 配置 */
 export interface AgentConfig {
@@ -71,7 +71,7 @@ export const AGENT_CONFIGS: Record<SpecialistAgentType, AgentConfig> = {
   },
   [SpecialistAgentType.CASE_ANALYST]: {
     type: SpecialistAgentType.CASE_ANALYST,
-    model: 'claude-haiku-3-5-20241022',
+    model: 'claude-haiku-4-5-20251001',
     maxTurns: 2,
     maxTokens: 1500,
     temperature: 0,         // 案例检索需要确定性
@@ -80,7 +80,7 @@ export const AGENT_CONFIGS: Record<SpecialistAgentType, AgentConfig> = {
   },
   [SpecialistAgentType.MEMORY_MANAGER]: {
     type: SpecialistAgentType.MEMORY_MANAGER,
-    model: 'claude-haiku-3-5-20241022',
+    model: 'claude-haiku-4-5-20251001',
     maxTurns: 2,
     maxTokens: 1024,
     temperature: 0,         // 信息提取需要确定性