Revert "fix: resolve chat conversation hanging and stream interruption issues (#1971)"

This reverts commit e68593f22d.

app/lib/modules/llm/providers/anthropic.ts

@@ -1,10 +1,10 @@
 import { BaseProvider } from '~/lib/modules/llm/base-provider';
 import type { ModelInfo } from '~/lib/modules/llm/types';
-import type { IProviderSetting } from '~/types/model';
 import type { LanguageModelV1 } from 'ai';
+import type { IProviderSetting } from '~/types/model';
 import { createAnthropic } from '@ai-sdk/anthropic';
 
-export class AnthropicProvider extends BaseProvider {
+export default class AnthropicProvider extends BaseProvider {
   name = 'Anthropic';
   getApiKeyLink = 'https://console.anthropic.com/settings/keys';
 
@@ -13,50 +13,6 @@ export class AnthropicProvider extends BaseProvider {
   };
 
   staticModels: ModelInfo[] = [
-    /*
-     * Claude Opus 4.1: Most powerful model for coding and reasoning
-     * Released August 5, 2025
-     */
-    {
-      name: 'claude-opus-4-1-20250805',
-      label: 'Claude Opus 4.1',
-      provider: 'Anthropic',
-      maxTokenAllowed: 200000,
-      maxCompletionTokens: 64000,
-      supportsSmartAI: false, // Base model without SmartAI
-    },
-    {
-      name: 'claude-opus-4-1-20250805-smartai',
-      label: 'Claude Opus 4.1 (SmartAI)',
-      provider: 'Anthropic',
-      maxTokenAllowed: 200000,
-      maxCompletionTokens: 64000,
-      supportsSmartAI: true,
-      isSmartAIEnabled: true,
-    },
-
-    /*
-     * Claude Sonnet 4: Hybrid instant/extended response model
-     * Released May 14, 2025
-     */
-    {
-      name: 'claude-sonnet-4-20250514',
-      label: 'Claude Sonnet 4',
-      provider: 'Anthropic',
-      maxTokenAllowed: 200000,
-      maxCompletionTokens: 64000,
-      supportsSmartAI: false, // Base model without SmartAI
-    },
-    {
-      name: 'claude-sonnet-4-20250514-smartai',
-      label: 'Claude Sonnet 4 (SmartAI)',
-      provider: 'Anthropic',
-      maxTokenAllowed: 200000,
-      maxCompletionTokens: 64000,
-      supportsSmartAI: true,
-      isSmartAIEnabled: true,
-    },
-
     /*
      * Essential fallback models - only the most stable/reliable ones
      * Claude 3.5 Sonnet: 200k context, excellent for complex reasoning and coding
@@ -66,17 +22,7 @@ export class AnthropicProvider extends BaseProvider {
       label: 'Claude 3.5 Sonnet',
       provider: 'Anthropic',
       maxTokenAllowed: 200000,
-      maxCompletionTokens: 8192,
-      supportsSmartAI: false, // Base model without SmartAI
-    },
-    {
-      name: 'claude-3-5-sonnet-20241022-smartai',
-      label: 'Claude 3.5 Sonnet (SmartAI)',
-      provider: 'Anthropic',
-      maxTokenAllowed: 200000,
-      maxCompletionTokens: 8192,
-      supportsSmartAI: true,
-      isSmartAIEnabled: true,
+      maxCompletionTokens: 128000,
     },
 
     // Claude 3 Haiku: 200k context, fastest and most cost-effective
@@ -85,17 +31,16 @@ export class AnthropicProvider extends BaseProvider {
       label: 'Claude 3 Haiku',
       provider: 'Anthropic',
       maxTokenAllowed: 200000,
-      maxCompletionTokens: 4096,
-      supportsSmartAI: false, // Base model without SmartAI
+      maxCompletionTokens: 128000,
     },
+
+    // Claude Opus 4: 200k context, 32k output limit (latest flagship model)
     {
-      name: 'claude-3-haiku-20240307-smartai',
-      label: 'Claude 3 Haiku (SmartAI)',
+      name: 'claude-opus-4-20250514',
+      label: 'Claude 4 Opus',
       provider: 'Anthropic',
       maxTokenAllowed: 200000,
-      maxCompletionTokens: 4096,
-      supportsSmartAI: true,
-      isSmartAIEnabled: true,
+      maxCompletionTokens: 32000,
     },
   ];
 
@@ -119,8 +64,7 @@ export class AnthropicProvider extends BaseProvider {
     const response = await fetch(`https://api.anthropic.com/v1/models`, {
       headers: {
         'x-api-key': `${apiKey}`,
-        ['anthropic-version']: '2023-06-01',
-        ['Content-Type']: 'application/json',
+        'anthropic-version': '2023-06-01',
       },
     });
 
@@ -146,21 +90,15 @@ export class AnthropicProvider extends BaseProvider {
         contextWindow = 200000; // Claude 3 Sonnet has 200k context
       }
 
-      // Determine max completion tokens based on model
-      let maxCompletionTokens = 4096; // default fallback
+      // Determine completion token limits based on specific model
+      let maxCompletionTokens = 128000; // default for older Claude 3 models
 
-      if (m.id?.includes('claude-sonnet-4') || m.id?.includes('claude-opus-4')) {
-        maxCompletionTokens = 64000;
-      } else if (m.id?.includes('claude-3-7-sonnet')) {
-        maxCompletionTokens = 64000;
-      } else if (m.id?.includes('claude-3-5-sonnet')) {
-        maxCompletionTokens = 8192;
-      } else if (m.id?.includes('claude-3-haiku')) {
-        maxCompletionTokens = 4096;
-      } else if (m.id?.includes('claude-3-opus')) {
-        maxCompletionTokens = 4096;
-      } else if (m.id?.includes('claude-3-sonnet')) {
-        maxCompletionTokens = 4096;
+      if (m.id?.includes('claude-opus-4')) {
+        maxCompletionTokens = 32000; // Claude 4 Opus: 32K output limit
+      } else if (m.id?.includes('claude-sonnet-4')) {
+        maxCompletionTokens = 64000; // Claude 4 Sonnet: 64K output limit
+      } else if (m.id?.includes('claude-4')) {
+        maxCompletionTokens = 32000; // Other Claude 4 models: conservative 32K limit
       }
 
       return {
@@ -169,7 +107,6 @@ export class AnthropicProvider extends BaseProvider {
         provider: this.name,
         maxTokenAllowed: contextWindow,
         maxCompletionTokens,
-        supportsSmartAI: true, // All Anthropic models support SmartAI
       };
     });
   }
@@ -180,27 +117,19 @@ export class AnthropicProvider extends BaseProvider {
     apiKeys?: Record<string, string>;
     providerSettings?: Record<string, IProviderSetting>;
   }) => LanguageModelV1 = (options) => {
-    const { model, serverEnv, apiKeys, providerSettings } = options;
-    const { apiKey, baseUrl } = this.getProviderBaseUrlAndKey({
+    const { apiKeys, providerSettings, serverEnv, model } = options;
+    const { apiKey } = this.getProviderBaseUrlAndKey({
       apiKeys,
-      providerSettings: providerSettings?.[this.name],
+      providerSettings,
       serverEnv: serverEnv as any,
       defaultBaseUrlKey: '',
       defaultApiTokenKey: 'ANTHROPIC_API_KEY',
     });
-
-    if (!apiKey) {
-      throw `Missing API key for ${this.name} provider`;
-    }
-
     const anthropic = createAnthropic({
       apiKey,
-      baseURL: baseUrl || 'https://api.anthropic.com/v1',
+      headers: { 'anthropic-beta': 'output-128k-2025-02-19' },
     });
 
-    // Handle SmartAI variant by using the base model name
-    const actualModel = model.replace('-smartai', '');
-
-    return anthropic(actualModel);
+    return anthropic(model);
   };
 }