diff --git a/package.json b/package.json
index 29c4f4d155..a7436a1f18 100644
--- a/package.json
+++ b/package.json
@@ -110,7 +110,7 @@
     "@agentic/searxng": "^7.3.3",
     "@agentic/tavily": "^7.3.3",
     "@ant-design/v5-patch-for-react-19": "^1.0.3",
-    "@anthropic-ai/sdk": "^0.38.0",
+    "@anthropic-ai/sdk": "^0.41.0",
     "@electron-toolkit/eslint-config-prettier": "^3.0.0",
     "@electron-toolkit/eslint-config-ts": "^3.0.0",
     "@electron-toolkit/preload": "^3.0.0",
diff --git a/src/renderer/src/config/models.ts b/src/renderer/src/config/models.ts
index 42073b43e3..65ed25a04f 100644
--- a/src/renderer/src/config/models.ts
+++ b/src/renderer/src/config/models.ts
@@ -230,6 +230,12 @@ export const FUNCTION_CALLING_REGEX = new RegExp(
   `\\b(?!(?:${FUNCTION_CALLING_EXCLUDED_MODELS.join('|')})\\b)(?:${FUNCTION_CALLING_MODELS.join('|')})\\b`,
   'i'
 )
+
+export const CLAUDE_SUPPORTED_WEBSEARCH_REGEX = new RegExp(
+  `\\b(?:claude-3(-|\\.)(7|5)-sonnet(?:-[\\w-]+)|claude-3(-|\\.)5-haiku(?:-[\\w-]+))\\b`,
+  'i'
+)
+
 export function isFunctionCallingModel(model: Model): boolean {
   if (model.type?.includes('function_calling')) {
     return true
@@ -2399,6 +2405,10 @@ export function isWebSearchModel(model: Model): boolean {
     return false
   }
 
+  if (model.id.includes('claude')) {
+    return CLAUDE_SUPPORTED_WEBSEARCH_REGEX.test(model.id)
+  }
+
   if (provider.type === 'openai') {
     if (
       isOpenAILLMModel(model) &&
diff --git a/src/renderer/src/providers/AiProvider/AnthropicProvider.ts b/src/renderer/src/providers/AiProvider/AnthropicProvider.ts
index 4402186050..d113d7f532 100644
--- a/src/renderer/src/providers/AiProvider/AnthropicProvider.ts
+++ b/src/renderer/src/providers/AiProvider/AnthropicProvider.ts
@@ -1,7 +1,15 @@
 import Anthropic from '@anthropic-ai/sdk'
-import { MessageCreateParamsNonStreaming, MessageParam, TextBlockParam } from '@anthropic-ai/sdk/resources'
+import {
+  MessageCreateParamsNonStreaming,
+  MessageParam,
+  TextBlockParam,
+  ToolUnion,
+  WebSearchResultBlock,
+  WebSearchTool20250305,
+  WebSearchToolResultError
+} from '@anthropic-ai/sdk/resources'
 import { DEFAULT_MAX_TOKENS } from '@renderer/config/constant'
-import { isReasoningModel, isVisionModel } from '@renderer/config/models'
+import { isReasoningModel, isVisionModel, isWebSearchModel } from '@renderer/config/models'
 import { getStoreSetting } from '@renderer/hooks/useSettings'
 import i18n from '@renderer/i18n'
 import { getAssistantSettings, getDefaultModel, getTopNamingModel } from '@renderer/services/AssistantService'
@@ -11,7 +19,16 @@ import {
   filterEmptyMessages,
   filterUserRoleStartMessages
 } from '@renderer/services/MessagesService'
-import { Assistant, EFFORT_RATIO, FileTypes, MCPToolResponse, Model, Provider, Suggestion } from '@renderer/types'
+import {
+  Assistant,
+  EFFORT_RATIO,
+  FileTypes,
+  MCPToolResponse,
+  Model,
+  Provider,
+  Suggestion,
+  WebSearchSource
+} from '@renderer/types'
 import { ChunkType } from '@renderer/types/chunk'
 import type { Message } from '@renderer/types/newMessage'
 import { removeSpecialCharactersForTopicName } from '@renderer/utils'
@@ -109,6 +126,18 @@ export default class AnthropicProvider extends BaseProvider {
     }
   }
 
+  private async getWebSearchParams(model: Model): Promise<WebSearchTool20250305 | undefined> {
+    if (!isWebSearchModel(model)) {
+      return undefined
+    }
+
+    return {
+      type: 'web_search_20250305',
+      name: 'web_search',
+      max_uses: 5
+    } as WebSearchTool20250305
+  }
+
   /**
    * Get the temperature
    * @param assistant - The assistant
@@ -201,6 +230,17 @@ export default class AnthropicProvider extends BaseProvider {
       }
     }
 
+    const isEnabledBuiltinWebSearch = assistant.enableWebSearch
+
+    const tools: ToolUnion[] = []
+
+    if (isEnabledBuiltinWebSearch) {
+      const webSearchTool = await this.getWebSearchParams(model)
+      if (webSearchTool) {
+        tools.push(webSearchTool)
+      }
+    }
+
     const body: MessageCreateParamsNonStreaming = {
       model: model.id,
       messages: userMessages,
@@ -211,6 +251,7 @@ export default class AnthropicProvider extends BaseProvider {
       system: systemMessage ? [systemMessage] : undefined,
       // @ts-ignore thinking
       thinking: this.getBudgetToken(assistant, model),
+      tools: tools,
       ...this.getCustomParameters(assistant)
     }
 
@@ -289,6 +330,34 @@ export default class AnthropicProvider extends BaseProvider {
 
             onChunk({ type: ChunkType.TEXT_DELTA, text })
           })
+          .on('contentBlock', (block) => {
+            if (block.type === 'server_tool_use' && block.name === 'web_search') {
+              onChunk({
+                type: ChunkType.LLM_WEB_SEARCH_IN_PROGRESS
+              })
+            } else if (block.type === 'web_search_tool_result') {
+              if (
+                block.content &&
+                (block.content as WebSearchToolResultError).type === 'web_search_tool_result_error'
+              ) {
+                onChunk({
+                  type: ChunkType.ERROR,
+                  error: {
+                    code: (block.content as WebSearchToolResultError).error_code,
+                    message: (block.content as WebSearchToolResultError).error_code
+                  }
+                })
+              } else {
+                onChunk({
+                  type: ChunkType.LLM_WEB_SEARCH_COMPLETE,
+                  llm_web_search: {
+                    results: block.content as Array<WebSearchResultBlock>,
+                    source: WebSearchSource.ANTHROPIC
+                  }
+                })
+              }
+            }
+          })
           .on('thinking', (thinking) => {
             hasThinkingContent = true
             const currentTime = new Date().getTime() // Get current time for each chunk
diff --git a/src/renderer/src/store/messageBlock.ts b/src/renderer/src/store/messageBlock.ts
index db5ec338f8..4814da8306 100644
--- a/src/renderer/src/store/messageBlock.ts
+++ b/src/renderer/src/store/messageBlock.ts
@@ -1,3 +1,4 @@
+import { WebSearchResultBlock } from '@anthropic-ai/sdk/resources'
 import type { GroundingMetadata } from '@google/genai'
 import { createEntityAdapter, createSelector, createSlice, type PayloadAction } from '@reduxjs/toolkit'
 import type { Citation } from '@renderer/pages/home/Messages/CitationsList'
@@ -136,6 +137,26 @@ const formatCitationsFromBlock = (block: CitationMessageBlock | undefined): Cita
             }
           }) || []
         break
+      case WebSearchSource.ANTHROPIC:
+        formattedCitations =
+          (block.response.results as Array<WebSearchResultBlock>)?.map((result, index) => {
+            const {url} = result
+            let hostname: string | undefined
+            try {
+              hostname = new URL(url).hostname
+            } catch {
+              hostname = url
+            }
+            return {
+              number: index + 1,
+              url: url,
+              title: result.title,
+              hostname: hostname,
+              showFavicon: true,
+              type: 'websearch'
+            }
+          }) || []
+        break
       case WebSearchSource.OPENROUTER:
       case WebSearchSource.PERPLEXITY:
         formattedCitations =
diff --git a/src/renderer/src/store/thunk/messageThunk.ts b/src/renderer/src/store/thunk/messageThunk.ts
index 8094a5ff29..ac285298b7 100644
--- a/src/renderer/src/store/thunk/messageThunk.ts
+++ b/src/renderer/src/store/thunk/messageThunk.ts
@@ -483,6 +483,12 @@ const fetchAndProcessAssistantResponseImpl = async (
           console.error('[onExternalToolComplete] citationBlockId is null. Cannot update.')
         }
       },
+      onLLMWebSearchInProgress: () => {
+        const citationBlock = createCitationBlock(assistantMsgId, {}, { status: MessageBlockStatus.PROCESSING })
+        citationBlockId = citationBlock.id
+        handleBlockTransition(citationBlock, MessageBlockType.CITATION)
+        saveUpdatedBlockToDB(citationBlock.id, assistantMsgId, topicId, getState)
+      },
       onLLMWebSearchComplete(llmWebSearchResult) {
         if (citationBlockId) {
           const changes: Partial<CitationMessageBlock> = {
diff --git a/src/renderer/src/types/index.ts b/src/renderer/src/types/index.ts
index fdc02d35f7..0bece1576f 100644
--- a/src/renderer/src/types/index.ts
+++ b/src/renderer/src/types/index.ts
@@ -1,3 +1,4 @@
+import type { WebSearchResultBlock } from '@anthropic-ai/sdk/resources'
 import type { GroundingMetadata } from '@google/genai'
 import type OpenAI from 'openai'
 import React from 'react'
@@ -450,6 +451,7 @@ export type WebSearchResults =
   | GroundingMetadata
   | OpenAI.Chat.Completions.ChatCompletionMessage.Annotation.URLCitation[]
   | OpenAI.Responses.ResponseOutputText.URLCitation[]
+  | WebSearchResultBlock[]
   | any[]
 
 export enum WebSearchSource {
@@ -457,6 +459,7 @@ export enum WebSearchSource {
   OPENAI = 'openai',
   OPENAI_COMPATIBLE = 'openai-compatible',
   OPENROUTER = 'openrouter',
+  ANTHROPIC = 'anthropic',
   GEMINI = 'gemini',
   PERPLEXITY = 'perplexity',
   QWEN = 'qwen',
diff --git a/yarn.lock b/yarn.lock
index 58b49f553e..0cf53dba53 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -176,9 +176,9 @@ __metadata:
   languageName: node
   linkType: hard
 
-"@anthropic-ai/sdk@npm:^0.38.0":
-  version: 0.38.0
-  resolution: "@anthropic-ai/sdk@npm:0.38.0"
+"@anthropic-ai/sdk@npm:^0.41.0":
+  version: 0.41.0
+  resolution: "@anthropic-ai/sdk@npm:0.41.0"
   dependencies:
     "@types/node": "npm:^18.11.18"
     "@types/node-fetch": "npm:^2.6.4"
@@ -187,7 +187,7 @@ __metadata:
     form-data-encoder: "npm:1.7.2"
     formdata-node: "npm:^4.3.2"
     node-fetch: "npm:^2.6.7"
-  checksum: 10c0/accd003cbe314d32d4d36f5fd7fd743c32e2a896c9ea57190966eda20b8c46e00f542bf03ec3603d1274a7ac18e902bed4158ff5980e4e248a6d5c75e3fd891a
+  checksum: 10c0/b57df42df33f29f3baa682da663d7411624f511384f84c790a936b505c5074d9676749ce05d45b1caa9af7077a20013889efb65f3e25f979e7ab2fa245e2a444
   languageName: node
   linkType: hard
 
@@ -1488,13 +1488,6 @@ __metadata:
   languageName: node
   linkType: hard
 
-"@google/generative-ai@npm:^0.24.1":
-  version: 0.24.1
-  resolution: "@google/generative-ai@npm:0.24.1"
-  checksum: 10c0/8da77fc648b04fc2ecef53e75230e2ee67a8fd29a34b6b8874e77a7332b2a1e4b51d44dd9eb604fb063ed8ea46d293aac5b1e2a955ae2435e2582a265f2cb80d
-  languageName: node
-  linkType: hard
-
 "@hello-pangea/dnd@npm:^16.6.0":
   version: 16.6.0
   resolution: "@hello-pangea/dnd@npm:16.6.0"
@@ -4378,7 +4371,7 @@ __metadata:
     "@agentic/searxng": "npm:^7.3.3"
     "@agentic/tavily": "npm:^7.3.3"
     "@ant-design/v5-patch-for-react-19": "npm:^1.0.3"
-    "@anthropic-ai/sdk": "npm:^0.38.0"
+    "@anthropic-ai/sdk": "npm:^0.41.0"
     "@cherrystudio/embedjs": "npm:^0.1.28"
     "@cherrystudio/embedjs-libsql": "npm:^0.1.28"
     "@cherrystudio/embedjs-loader-csv": "npm:^0.1.28"