diff --git a/.github/ISSUE_TEMPLATE/bug_report.yml b/.github/ISSUE_TEMPLATE/bug_report.yml
index 44569c51ad5..8e2ec109e62 100644
--- a/.github/ISSUE_TEMPLATE/bug_report.yml
+++ b/.github/ISSUE_TEMPLATE/bug_report.yml
@@ -28,7 +28,7 @@ body:
         - **OS**: macOS
         - **Continue version**: v0.9.4
         - **IDE version**:  VSCode 1.85.1
-        - Model: Claude Sonnet 3.5
+        - Model: Claude Sonnet 4.5
         - Agent configuration
       value: |
         - OS:
diff --git a/core/config/workspace/workspaceBlocks.ts b/core/config/workspace/workspaceBlocks.ts
index d3dfa8690c9..4f20eda8912 100644
--- a/core/config/workspace/workspaceBlocks.ts
+++ b/core/config/workspace/workspaceBlocks.ts
@@ -42,9 +42,9 @@ function getContentsForNewBlock(blockType: BlockType): ConfigYaml {
       configYaml.models = [
         {
           provider: "anthropic",
-          model: "claude-3-7-sonnet-latest",
+          model: "claude-sonnet-4-5",
           apiKey: "${{ secrets.ANTHROPIC_API_KEY }}",
-          name: "Claude 3.7 Sonnet",
+          name: "Claude Sonnet 4.5",
           roles: ["chat", "edit"],
         },
       ];
diff --git a/core/llm/llms/Anthropic.vitest.ts b/core/llm/llms/Anthropic.vitest.ts
index 5c623b05e5d..07915a93a49 100644
--- a/core/llm/llms/Anthropic.vitest.ts
+++ b/core/llm/llms/Anthropic.vitest.ts
@@ -134,7 +134,7 @@ describe("Anthropic", () => {
   test("streamChat should send a valid request", async () => {
     const anthropic = new Anthropic({
       apiKey: "test-api-key",
-      model: "claude-3-5-sonnet-latest",
+      model: "claude-sonnet-4-5",
       apiBase: "https://api.anthropic.com/v1/",
     });
 
@@ -155,7 +155,7 @@ describe("Anthropic", () => {
           "x-api-key": "test-api-key",
         },
         body: {
-          model: "claude-3-5-sonnet-latest",
+          model: "claude-sonnet-4-5",
           max_tokens: 8192,
           stream: true,
           messages: [
@@ -177,7 +177,7 @@ describe("Anthropic", () => {
   test("chat should send a valid request", async () => {
     const anthropic = new Anthropic({
       apiKey: "test-api-key",
-      model: "claude-3-5-sonnet-latest",
+      model: "claude-sonnet-4-5",
       apiBase: "https://api.anthropic.com/v1/",
     });
 
@@ -198,7 +198,7 @@ describe("Anthropic", () => {
           "x-api-key": "test-api-key",
         },
         body: {
-          model: "claude-3-5-sonnet-latest",
+          model: "claude-sonnet-4-5",
           max_tokens: 8192,
           stream: true,
           messages: [
@@ -220,7 +220,7 @@ describe("Anthropic", () => {
   test("streamComplete should send a valid request", async () => {
     const anthropic = new Anthropic({
       apiKey: "test-api-key",
-      model: "claude-3-5-sonnet-latest",
+      model: "claude-sonnet-4-5",
       apiBase: "https://api.anthropic.com/v1/",
     });
 
@@ -238,7 +238,7 @@ describe("Anthropic", () => {
           "x-api-key": "test-api-key",
         },
         body: {
-          model: "claude-3-5-sonnet-latest",
+          model: "claude-sonnet-4-5",
           max_tokens: 8192,
           stream: true,
           messages: [
@@ -260,7 +260,7 @@ describe("Anthropic", () => {
   test("complete should send a valid request", async () => {
     const anthropic = new Anthropic({
       apiKey: "test-api-key",
-      model: "claude-3-5-sonnet-latest",
+      model: "claude-sonnet-4-5",
       apiBase: "https://api.anthropic.com/v1/",
     });
 
@@ -278,7 +278,7 @@ describe("Anthropic", () => {
           "x-api-key": "test-api-key",
         },
         body: {
-          model: "claude-3-5-sonnet-latest",
+          model: "claude-sonnet-4-5",
           max_tokens: 8192,
           stream: true,
           messages: [
@@ -301,7 +301,7 @@ describe("Anthropic", () => {
     test("should handle system message", async () => {
       const anthropic = new Anthropic({
         apiKey: "test-api-key",
-        model: "claude-3-5-sonnet-latest",
+        model: "claude-sonnet-4-5",
         apiBase: "https://api.anthropic.com/v1/",
       });
 
@@ -325,7 +325,7 @@ describe("Anthropic", () => {
             "x-api-key": "test-api-key",
           },
           body: {
-            model: "claude-3-5-sonnet-latest",
+            model: "claude-sonnet-4-5",
             max_tokens: 8192,
             stream: true,
             messages: [
@@ -347,7 +347,7 @@ describe("Anthropic", () => {
     test("should handle tool calls", async () => {
       const anthropic = new Anthropic({
         apiKey: "test-api-key",
-        model: "claude-3-5-sonnet-latest",
+        model: "claude-sonnet-4-5",
         apiBase: "https://api.anthropic.com/v1/",
       });
 
@@ -386,7 +386,7 @@ describe("Anthropic", () => {
             "x-api-key": "test-api-key",
           },
           body: {
-            model: "claude-3-5-sonnet-latest",
+            model: "claude-sonnet-4-5",
             max_tokens: 8192,
             stream: true,
             messages: [
@@ -424,7 +424,7 @@ describe("Anthropic", () => {
     test("should handle custom max tokens", async () => {
       const anthropic = new Anthropic({
         apiKey: "test-api-key",
-        model: "claude-3-5-sonnet-latest",
+        model: "claude-sonnet-4-5",
         apiBase: "https://api.anthropic.com/v1/",
       });
 
@@ -446,7 +446,7 @@ describe("Anthropic", () => {
             "x-api-key": "test-api-key",
           },
           body: {
-            model: "claude-3-5-sonnet-latest",
+            model: "claude-sonnet-4-5",
             max_tokens: 1000,
             stream: true,
             messages: [
@@ -470,7 +470,7 @@ describe("Anthropic", () => {
     test("should throw error when API key is missing", async () => {
       const anthropic = new Anthropic({
         apiKey: "",
-        model: "claude-3-5-sonnet-latest",
+        model: "claude-sonnet-4-5",
         apiBase: "https://api.anthropic.com/v1/",
       });
 
diff --git a/core/llm/llms/OpenRouter.vitest.ts b/core/llm/llms/OpenRouter.vitest.ts
index e6e8afdd216..85ca5dd1c91 100644
--- a/core/llm/llms/OpenRouter.vitest.ts
+++ b/core/llm/llms/OpenRouter.vitest.ts
@@ -6,13 +6,13 @@ import OpenRouter from "./OpenRouter";
 describe("OpenRouter Anthropic Caching", () => {
   it("should detect Anthropic models correctly", () => {
     const openRouter = new OpenRouter({
-      model: "claude-3-5-sonnet-latest",
+      model: "claude-sonnet-4-5",
       apiKey: "test-key",
     });
 
     // Test private method through modifyChatBody
     const body: ChatCompletionCreateParams = {
-      model: "claude-3-5-sonnet-latest",
+      model: "claude-sonnet-4-5",
       messages: [],
     };
 
@@ -22,7 +22,7 @@ describe("OpenRouter Anthropic Caching", () => {
 
   it("should add cache_control to user messages when caching is enabled", () => {
     const openRouter = new OpenRouter({
-      model: "anthropic/claude-3.5-sonnet",
+      model: "anthropic/claude-sonnet-4.5",
       apiKey: "test-key",
       cacheBehavior: {
         cacheConversation: true,
@@ -31,7 +31,7 @@ describe("OpenRouter Anthropic Caching", () => {
     });
 
     const body: ChatCompletionCreateParams = {
-      model: "anthropic/claude-3.5-sonnet",
+      model: "anthropic/claude-sonnet-4.5",
       messages: [
         { role: "user", content: "First message" },
         { role: "assistant", content: "Response" },
@@ -71,7 +71,7 @@ describe("OpenRouter Anthropic Caching", () => {
 
   it("should correctly handle cache_control with system messages present", () => {
     const openRouter = new OpenRouter({
-      model: "claude-3-5-sonnet-latest",
+      model: "claude-sonnet-4-5",
       apiKey: "test-key",
       cacheBehavior: {
         cacheConversation: true,
@@ -80,7 +80,7 @@ describe("OpenRouter Anthropic Caching", () => {
     });
 
     const body: ChatCompletionCreateParams = {
-      model: "claude-3-5-sonnet-latest",
+      model: "claude-sonnet-4-5",
       messages: [
         { role: "system", content: "You are a helpful assistant" },
         { role: "user", content: "First user message" },
@@ -137,7 +137,7 @@ describe("OpenRouter Anthropic Caching", () => {
 
   it("should add cache_control to system message when caching is enabled", () => {
     const openRouter = new OpenRouter({
-      model: "claude-3-5-sonnet-latest",
+      model: "claude-sonnet-4-5",
       apiKey: "test-key",
       cacheBehavior: {
         cacheConversation: false,
@@ -146,7 +146,7 @@ describe("OpenRouter Anthropic Caching", () => {
     });
 
     const body: ChatCompletionCreateParams = {
-      model: "claude-3-5-sonnet-latest",
+      model: "claude-sonnet-4-5",
       messages: [
         { role: "system", content: "You are a helpful assistant" },
         { role: "user", content: "Hello" },
@@ -176,7 +176,7 @@ describe("OpenRouter Anthropic Caching", () => {
 
   it("should handle array content correctly", () => {
     const openRouter = new OpenRouter({
-      model: "claude-3-5-sonnet-latest",
+      model: "claude-sonnet-4-5",
       apiKey: "test-key",
       cacheBehavior: {
         cacheConversation: true,
@@ -185,7 +185,7 @@ describe("OpenRouter Anthropic Caching", () => {
     });
 
     const body: ChatCompletionCreateParams = {
-      model: "claude-3-5-sonnet-latest",
+      model: "claude-sonnet-4-5",
       messages: [
         {
           role: "user",
diff --git a/core/llm/toolSupport.test.ts b/core/llm/toolSupport.test.ts
index 2f0f566e7e3..7981dac5f71 100644
--- a/core/llm/toolSupport.test.ts
+++ b/core/llm/toolSupport.test.ts
@@ -179,17 +179,11 @@ describe("PROVIDER_TOOL_SUPPORT", () => {
     });
 
     it("should return undefined for Claude Haiku and Opus models", () => {
-      expect(supportsFn("anthropic.claude-3-5-haiku-20240307-v1:0")).toBe(
-        false,
-      );
-      expect(supportsFn("anthropic.claude-3.5-haiku-20240620-v1:0")).toBe(
-        false,
-      );
-      expect(supportsFn("anthropic.claude-3-7-haiku-20240620-v1:0")).toBe(
-        false,
-      );
-      expect(supportsFn("anthropic.claude-3-5-opus-20240620-v1:0")).toBe(false);
-      expect(supportsFn("anthropic.claude-3.7-opus-20240620-v1:0")).toBe(false);
+      expect(supportsFn("anthropic.claude-3-5-haiku-20240307-v1:0")).toBe(true);
+      expect(supportsFn("anthropic.claude-3.5-haiku-20240620-v1:0")).toBe(true);
+      expect(supportsFn("anthropic.claude-3-7-haiku-20240620-v1:0")).toBe(true);
+      expect(supportsFn("anthropic.claude-3-5-opus-20240620-v1:0")).toBe(true);
+      expect(supportsFn("anthropic.claude-3.7-opus-20240620-v1:0")).toBe(true);
     });
 
     it("should return undefined for other unsupported models", () => {
diff --git a/core/llm/toolSupport.ts b/core/llm/toolSupport.ts
index 01ad207983b..3466a50eeb0 100644
--- a/core/llm/toolSupport.ts
+++ b/core/llm/toolSupport.ts
@@ -14,39 +14,17 @@ export const PROVIDER_TOOL_SUPPORT: Record<string, (model: string) => boolean> =
         }
       } catch (e) {}
 
-      return [
-        "claude-3-5",
-        "claude-3.5",
-        "claude-3-7",
-        "claude-3.7",
-        "claude-sonnet-4",
-        "claude-4-sonnet",
-        "gpt-4",
-        "o3",
-        "gemini",
-        "claude-opus-4",
-        "gemma",
-      ].some((part) => model.toLowerCase().startsWith(part));
+      return ["claude", "gpt-4", "o3", "gemini", "gemma"].some((part) =>
+        model.toLowerCase().startsWith(part),
+      );
     },
     anthropic: (model) => {
-      const lower = model.toLowerCase();
-      if (
-        [
-          "claude-3-5",
-          "claude-3.5",
-          "claude-3-7",
-          "claude-3.7",
-          "claude-sonnet-4",
-          "claude-4-sonnet",
-          "claude-opus-4",
-        ].some((part) => lower.startsWith(part))
-      ) {
-        return true;
+      if (model.includes("claude-2") || model.includes("claude-instant")) {
+        return false;
       }
-      if (lower.includes("claude") && lower.includes("4-5")) {
+      if (["claude"].some((part) => model.toLowerCase().startsWith(part))) {
         return true;
       }
-
       return false;
     },
     azure: (model) => {
@@ -125,15 +103,12 @@ export const PROVIDER_TOOL_SUPPORT: Record<string, (model: string) => boolean> =
       );
     },
     bedrock: (model) => {
+      if (model.includes("claude-2") || model.includes("claude-instant")) {
+        return false;
+      }
       if (
         [
-          "claude-3-5-sonnet",
-          "claude-3.5-sonnet",
-          "claude-3-7-sonnet",
-          "claude-3.7-sonnet",
-          "claude-sonnet-4",
-          "claude-4-sonnet",
-          "claude-opus-4",
+          "claude",
           "nova-lite",
           "nova-pro",
           "nova-micro",
@@ -280,8 +255,7 @@ export const PROVIDER_TOOL_SUPPORT: Record<string, (model: string) => boolean> =
         "openai/o3",
         "openai/o4",
         "openai/gpt-oss",
-        "anthropic/claude-3",
-        "anthropic/claude-4",
+        "anthropic/claude",
         "microsoft/phi-3",
         "google/gemini-flash-1.5",
         "google/gemini-2",
@@ -391,7 +365,8 @@ export function isRecommendedAgentModel(modelName: string): boolean {
   const recs: RegExp[][] = [
     [/o[134]/],
     [/deepseek/, /r1|reasoner/],
-    [/gemini/, /2\.5|3/, /pro/],
+    [/gemini/, /2\.5/, /pro/],
+    [/gemini/, /3-pro/],
     [/gpt/, /-5|5\.1/],
     [/claude/, /sonnet/, /3\.7|3-7|-4/],
     [/claude/, /opus/, /-4/],
diff --git a/docs/customize/model-providers/top-level/anthropic.mdx b/docs/customize/model-providers/top-level/anthropic.mdx
index 7231e93e935..fc8ec83f802 100644
--- a/docs/customize/model-providers/top-level/anthropic.mdx
+++ b/docs/customize/model-providers/top-level/anthropic.mdx
@@ -41,7 +41,7 @@ sidebarTitle: "Anthropic"
 </Tabs>
 
 <Info>
-  **Check out a more advanced configuration [here](https://hub.continue.dev/anthropic/claude-4-sonnet?view=config)**
+  **Check out a more advanced configuration [here](https://hub.continue.dev/anthropic/claude-sonnet-4-5?view=config)**
 </Info>
 
 ## How to Enable Prompt Caching with Claude
diff --git a/docs/customize/models.mdx b/docs/customize/models.mdx
index a21827a300b..85bcf25c42b 100644
--- a/docs/customize/models.mdx
+++ b/docs/customize/models.mdx
@@ -30,10 +30,10 @@ Read more about [model roles](/customize/model-roles), [model capabilities](/cus
 
 # Frontier Models
 
-[Claude 4 Sonnet](https://hub.continue.dev/anthropic/claude-4-sonnet) from Anthropic
+[Claude Sonnet 4.5](https://hub.continue.dev/anthropic/claude-sonnet-4-5) from Anthropic
 
 1. Get your API key from [Anthropic](https://console.anthropic.com/)
-2. Add [Claude 4 Sonnet](https://hub.continue.dev/anthropic/claude-4-sonnet) to a config on Continue Mission Control
+2. Add[Claude Sonnet 4.5](https://hub.continue.dev/anthropic/claude-sonnet-4-5) to a config on Continue Mission Control
 3. Add `ANTHROPIC_API_KEY` as a [User Secret](https://docs.continue.dev/mission-control/secrets/secret-types#user-secrets) on Continue Mission Control [here](https://hub.continue.dev/settings/secrets)
 4. Click `Reload config` in the config selector in the Continue IDE extension
 
diff --git a/extensions/intellij/src/main/kotlin/com/github/continuedev/continueintellijextension/constants/ServerConstants.kt b/extensions/intellij/src/main/kotlin/com/github/continuedev/continueintellijextension/constants/ServerConstants.kt
index 5135dc87ae9..725cc948ae2 100644
--- a/extensions/intellij/src/main/kotlin/com/github/continuedev/continueintellijextension/constants/ServerConstants.kt
+++ b/extensions/intellij/src/main/kotlin/com/github/continuedev/continueintellijextension/constants/ServerConstants.kt
@@ -14,10 +14,10 @@ const val DEFAULT_CONFIG =
 {
   "models": [
     {
-      "model": "claude-3-5-sonnet-latest",
+      "model": "claude-sonnet-4-5",
       "provider": "anthropic",
       "apiKey": "",
-      "title": "Claude 3.5 Sonnet"
+      "title": "Claude Sonnet 4.5"
     }
   ],
   "tabAutocompleteModel": {
diff --git a/extensions/vscode/config_schema.json b/extensions/vscode/config_schema.json
index 111db4046da..c7ea072f43a 100644
--- a/extensions/vscode/config_schema.json
+++ b/extensions/vscode/config_schema.json
@@ -850,14 +850,10 @@
                 "anyOf": [
                   {
                     "enum": [
-                      "claude-2",
-                      "claude-instant-1",
-                      "claude-3-5-sonnet-latest",
-                      "claude-3-7-sonnet-20250219",
-                      "claude-3-opus-20240229",
-                      "claude-3-sonnet-20240229",
-                      "claude-3-haiku-20240307",
-                      "claude-2.1"
+                      "claude-sonnet-4",
+                      "claude-sonnet-4-5",
+                      "claude-opus-4-1",
+                      "claude-haiku-4-5"
                     ]
                   },
                   {
@@ -1610,14 +1606,10 @@
                       "codeup-13b",
                       "deepseek-7b",
                       "deepseek-33b",
-                      "claude-2",
-                      "claude-instant-1",
-                      "claude-3-5-sonnet-latest",
-                      "claude-3-5-sonnet-20240620",
-                      "claude-3-opus-20240229",
-                      "claude-3-sonnet-20240229",
-                      "claude-3-haiku-20240307",
-                      "claude-2.1",
+                      "claude-sonnet-4",
+                      "claude-sonnet-4-5",
+                      "claude-opus-4-1",
+                      "claude-haiku-4-5",
                       "command-r",
                       "command-r-plus",
                       "chat-bison-001",
diff --git a/extensions/vscode/e2e/test-continue/config.json b/extensions/vscode/e2e/test-continue/config.json
index fbe78fa0aac..814552d9115 100644
--- a/extensions/vscode/e2e/test-continue/config.json
+++ b/extensions/vscode/e2e/test-continue/config.json
@@ -16,7 +16,7 @@
     {
       "provider": "mock",
       "title": "TOOL MOCK LLM",
-      "model": "claude-3-5-sonnet-latest",
+      "model": "claude-sonnet-4-5",
       "capabilities": {
         "tools": true
       },
@@ -50,7 +50,7 @@
     {
       "provider": "mock",
       "title": "SYSTEM MESSAGE MOCK LLM",
-      "model": "claude-3-5-sonnet-latest",
+      "model": "claude-sonnet-4-5",
       "requestOptions": {
         "extraBodyProperties": {
           "chatStream": [["REPEAT_SYSTEM_MSG"]]
@@ -60,7 +60,7 @@
     {
       "provider": "mock",
       "title": "LAST MESSAGE MOCK LLM",
-      "model": "claude-3-5-sonnet-latest",
+      "model": "claude-sonnet-4-5",
       "requestOptions": {
         "extraBodyProperties": {
           "chatStream": [["REPEAT_LAST_MSG"]]
diff --git a/gui/src/pages/AddNewModel/configs/models.ts b/gui/src/pages/AddNewModel/configs/models.ts
index 7de58309d53..59edce01dfa 100644
--- a/gui/src/pages/AddNewModel/configs/models.ts
+++ b/gui/src/pages/AddNewModel/configs/models.ts
@@ -1213,17 +1213,45 @@ export const models: { [key: string]: ModelPackage } = {
     icon: "openai.png",
     isOpenSource: false,
   },
+  claude45Sonnet: {
+    title: "Claude Sonnet 4.5",
+    description:
+      "Anthropic's smartest model for complex agents and coding with exceptional performance in reasoning and multilingual tasks.",
+    params: {
+      model: "claude-sonnet-4-5-20250929",
+      contextLength: 200_000,
+      title: "Claude 4.5 Sonnet",
+      apiKey: "",
+    },
+    providerOptions: ["anthropic", "replicate"],
+    icon: "anthropic.png",
+    isOpenSource: false,
+  },
+  claude45Haiku: {
+    title: "Claude Haiku 4.5",
+    description:
+      "Anthropic's fastest model with near-frontier intelligence, ideal for quick and accurate responses.",
+    params: {
+      model: "claude-haiku-4-5-20251001",
+      contextLength: 200_000,
+      title: "Claude Haiku 4.5",
+      apiKey: "",
+    },
+    providerOptions: ["anthropic"],
+    icon: "anthropic.png",
+    isOpenSource: false,
+  },
   claude4Sonnet: {
-    title: "Claude 4 Sonnet",
+    title: "Claude Sonnet 4",
     description:
-      "The most intelligent model in the Claude 4 series. Costing lesser than Claude 4 Opus.",
+      "The most intelligent model in the Claude 4 series. Costing lesser than Claude Opus 4.",
     params: {
       model: "claude-4-sonnet-latest",
       contextLength: 200_000,
       title: "Claude 4 Sonnet",
       apiKey: "",
     },
-    providerOptions: ["anthropic", "replicate"],
+    providerOptions: ["anthropic"],
     icon: "anthropic.png",
     isOpenSource: false,
   },
@@ -1240,14 +1268,13 @@ export const models: { [key: string]: ModelPackage } = {
     icon: "anthropic.png",
     isOpenSource: false,
   },
-  claude35Haiku: {
-    title: "Claude 3.5 Haiku",
-    description:
-      "The fastest model in the Claude 3.5 series: a compact model for near-instant responsiveness",
+  claude41Opus: {
+    title: "Claude Opus 4.1",
+    description: "The most capable model in the Claude 4 series",
     params: {
-      model: "claude-3-5-haiku-latest",
+      model: "claude-opus-4-1-20250805",
       contextLength: 200_000,
-      title: "Claude 3.5 Haiku",
+      title: "Claude Opus 4.1",
       apiKey: "",
     },
     providerOptions: ["anthropic"],
@@ -1643,20 +1670,7 @@ export const models: { [key: string]: ModelPackage } = {
     icon: "openai.png",
     isOpenSource: false,
   },
-  asksageclaude35Sonnet: {
-    title: "Claude 3.5 Sonnet",
-    description:
-      "Anthropic's most intelligent model, but much less expensive than Claude 3 Opus",
-    params: {
-      model: "claude-35-sonnet",
-      contextLength: 200_000,
-      title: "Claude 3.5 Sonnet",
-      apiKey: "",
-    },
-    providerOptions: ["askSage"],
-    icon: "anthropic.png",
-    isOpenSource: false,
-  },
+
   asksageclaude37sonnet: {
     title: "Claude 3.7 Sonnet",
     description: "Anthropic's 3.7 model.",
@@ -1683,19 +1697,7 @@ export const models: { [key: string]: ModelPackage } = {
     icon: "anthropic.png",
     isOpenSource: false,
   },
-  asksageclaude35gov: {
-    title: "Claude 3.5 Sonnet gov*",
-    description: "Anthropic's 3.5 Sonnet model.",
-    params: {
-      model: "aws-bedrock-claude-35-sonnet-gov",
-      contextLength: 200_000,
-      title: "Claude 3.5 Sonnet gov*",
-      apiKey: "",
-    },
-    providerOptions: ["askSage"],
-    icon: "anthropic.png",
-    isOpenSource: false,
-  },
+
   asksageclaude4s: {
     title: "Claude 4 Sonnet",
     description: "Anthropic's Claude 4 Sonnet",
@@ -2416,20 +2418,61 @@ export const models: { [key: string]: ModelPackage } = {
     icon: "cometapi.png",
     isOpenSource: false,
   },
-  cometapiClaude35HaikuLatest: {
-    title: "Claude 3.5 Haiku Latest",
+  cometapiClaude45Sonnet: {
+    title: "Claude 4.5 Sonnet Latest",
     description:
-      "Claude 3.5 Haiku Latest via CometAPI - fast and efficient model from Anthropic.",
+      "Claude 4.5 Sonnet Latest via CometAPI - Anthropic's smartest model for complex agents and coding.",
     params: {
-      model: "claude-3-5-haiku-latest",
+      model: "claude-sonnet-4-5-20250929",
       contextLength: 200_000,
-      title: "Claude 3.5 Haiku Latest",
+      title: "Claude 4.5 Sonnet Latest",
       apiKey: "",
     },
     providerOptions: ["cometapi"],
     icon: "cometapi.png",
     isOpenSource: false,
   },
+  cometapiClaude45Haiku: {
+    title: "Claude 4.5 Haiku Latest",
+    description:
+      "Claude 4.5 Haiku Latest via CometAPI - Anthropic's fastest model with near-frontier intelligence.",
+    params: {
+      model: "claude-haiku-4-5-20251001",
+      contextLength: 200_000,
+      title: "Claude 4.5 Haiku Latest",
+      apiKey: "",
+    },
+    providerOptions: ["cometapi"],
+    icon: "cometapi.png",
+    isOpenSource: false,
+  },
+  asksageclaude35Sonnet: {
+    title: "Claude 3.5 Sonnet",
+    description:
+      "Anthropic's most intelligent model, but much less expensive than Claude 3 Opus",
+    params: {
+      model: "claude-35-sonnet",
+      contextLength: 200_000,
+      title: "Claude 3.5 Sonnet",
+      apiKey: "",
+    },
+    providerOptions: ["askSage"],
+    icon: "anthropic.png",
+    isOpenSource: false,
+  },
+  asksageclaude35gov: {
+    title: "Claude 3.5 Sonnet gov*",
+    description: "Anthropic's 3.5 Sonnet model.",
+    params: {
+      model: "aws-bedrock-claude-35-sonnet-gov",
+      contextLength: 200_000,
+      title: "Claude 3.5 Sonnet gov*",
+      apiKey: "",
+    },
+    providerOptions: ["askSage"],
+    icon: "anthropic.png",
+    isOpenSource: false,
+  },
 
   // Gemini series models via CometAPI
   cometapiGemini25Pro: {
diff --git a/gui/src/pages/AddNewModel/configs/providers.ts b/gui/src/pages/AddNewModel/configs/providers.ts
index 8af1043473d..085fb95228b 100644
--- a/gui/src/pages/AddNewModel/configs/providers.ts
+++ b/gui/src/pages/AddNewModel/configs/providers.ts
@@ -77,12 +77,13 @@ export const providers: Partial<Record<string, ProviderInfo>> = {
       models.cometapiO4Mini,
       models.cometapiO3Pro,
       // Anthropic Claude family
+      models.cometapiClaude45Sonnet,
+      models.cometapiClaude45Haiku,
       models.cometapiClaudeOpus41,
       models.cometapiClaudeOpus41Thinking,
       models.cometapiClaudeSonnet4,
       models.cometapiClaudeSonnet4Thinking,
       models.cometapiClaude37SonnetLatest,
-      models.cometapiClaude35HaikuLatest,
       // Google Gemini family
       models.cometapiGemini25Pro,
       models.cometapiGemini25Flash,
@@ -169,9 +170,11 @@ export const providers: Partial<Record<string, ProviderInfo>> = {
       },
     ],
     packages: [
-      models.claude4Sonnet,
       models.claude4_5Opus,
-      models.claude35Haiku,
+      models.claude45Sonnet,
+      models.claude45Haiku,
+      models.claude41Opus,
+      models.claude4Sonnet,
     ],
     apiKeyUrl: "https://console.anthropic.com/account/keys",
   },
diff --git a/packages/config-yaml/src/markdown/agentFiles.test.ts b/packages/config-yaml/src/markdown/agentFiles.test.ts
index 20763ff0e49..2937db476d5 100644
--- a/packages/config-yaml/src/markdown/agentFiles.test.ts
+++ b/packages/config-yaml/src/markdown/agentFiles.test.ts
@@ -185,7 +185,7 @@ describe("serializeAgentFile", () => {
     const agentFile: AgentFile = {
       name: "Test Agent File",
       description: "A test agent file",
-      model: "anthropic/claude-3-sonnet",
+      model: "anthropic/claude-sonnet-4-5",
       tools: "tool1, tool2",
       rules: "rule1, rule2",
       prompt: "This is the test prompt",
diff --git a/packages/config-yaml/src/schemas/commonSlugs.ts b/packages/config-yaml/src/schemas/commonSlugs.ts
index 3ba10bbd5f2..c0790c44805 100644
--- a/packages/config-yaml/src/schemas/commonSlugs.ts
+++ b/packages/config-yaml/src/schemas/commonSlugs.ts
@@ -1,19 +1,20 @@
 export const commonModelSlugs = [
-  "anthropic/claude-3-7-sonnet",
+  "anthropic/claude-sonnet-4",
   "togetherai/llama-4-maverick-instruct-17bx128e",
   "google/gemini-2.5-pro",
   "mistral/codestral",
   "voyageai/voyage-code-3",
+  "anthropic/claude-sonnet-4-5",
   "relace/instant-apply",
   "xai/grok-2",
   "openai/gpt-4o",
   "togetherai/llama-4-scout-instruct-17bx16e",
-  "anthropic/claude-3-5-sonnet",
+  "anthropic/claude-haiku-4-5",
   "google/gemini-2.0-flash",
   "voyageai/rerank-2",
+  "anthropic/claude-opus-4-1",
   "ollama/deepseek-r1",
   "morphllm/morph-v0",
-  "anthropic/claude-3-5-haiku",
   "lmstudio/deepseek-r1",
   "openai/o3-mini",
   "voyageai/voyage-code-2",
diff --git a/packages/llm-info/src/providers/anthropic.ts b/packages/llm-info/src/providers/anthropic.ts
index 176cd372748..a84709f7b7e 100644
--- a/packages/llm-info/src/providers/anthropic.ts
+++ b/packages/llm-info/src/providers/anthropic.ts
@@ -4,13 +4,43 @@ export const Anthropic: ModelProvider = {
   id: "anthropic",
   displayName: "Anthropic",
   models: [
+    {
+      model: "claude-sonnet-4-5-20250929",
+      displayName: "Claude 4.5 Sonnet",
+      contextLength: 200000,
+      maxCompletionTokens: 64000,
+      description:
+        "Anthropic's smartest model for complex agents and coding with exceptional performance in reasoning and multilingual tasks.",
+      regex: /claude-(?:4[.-]5-sonnet|sonnet-4[.-]5).*/i,
+      recommendedFor: ["chat"],
+    },
+    {
+      model: "claude-haiku-4-5-20251001",
+      displayName: "Claude 4.5 Haiku",
+      contextLength: 200000,
+      maxCompletionTokens: 64000,
+      description:
+        "Anthropic's fastest model with near-frontier intelligence, ideal for quick and accurate responses.",
+      regex: /claude-(?:4[.-]5-haiku|haiku-4[.-]5).*/i,
+      recommendedFor: ["chat"],
+    },
+    {
+      model: "claude-opus-4-1-20250805",
+      displayName: "Claude 4.1 Opus",
+      contextLength: 200000,
+      maxCompletionTokens: 32000,
+      description:
+        "Exceptional model for specialized reasoning tasks with advanced agentic capabilities and superior coding performance.",
+      regex: /claude-opus-4[.-]1.*/i,
+      recommendedFor: ["chat"],
+    },
     {
       model: "claude-sonnet-4-20250514",
       displayName: "Claude 4 Sonnet",
       contextLength: 200000,
       maxCompletionTokens: 8192,
       description:
-        "Most intelligent model with the highest level of intelligence and capability.",
+        "Previous generation model with strong coding and reasoning capabilities, now superseded by Claude 4.5 Sonnet.",
       // Sometimes written as claude-4-sonnet, other times as claude-sonnet-4
       regex: /claude-(?:4-sonnet|sonnet-4).*/i,
       recommendedFor: ["chat"],
@@ -40,29 +70,30 @@ export const Anthropic: ModelProvider = {
       displayName: "Claude 4 Opus",
       contextLength: 200000,
       maxCompletionTokens: 8192,
-      description: "Previous iteration on Opus",
+      description:
+        "Previous generation model with high intelligence, now superseded by Claude 4.1 Opus.",
       regex: /claude-(?:4-opus|opus-4).*/i,
       recommendedFor: ["chat"],
     },
 
     {
-      model: "claude-3-5-sonnet-latest",
-      displayName: "Claude 3.5 Sonnet",
+      model: "claude-3-7-sonnet-latest",
+      displayName: "Claude 3.7 Sonnet",
       contextLength: 200000,
-      maxCompletionTokens: 8192,
+      maxCompletionTokens: 128000,
       description:
-        "Most intelligent model with the highest level of intelligence and capability.",
-      regex: /claude-3[.-]5-sonnet.*/i,
+        "First hybrid reasoning model with extended thinking capabilities, excellent for coding and front-end development.",
+      regex: /claude-3[.-]7-sonnet.*/i,
       recommendedFor: ["chat"],
     },
     {
-      model: "claude-3-7-sonnet-latest",
-      displayName: "Claude 3.7 Sonnet",
+      model: "claude-3-5-sonnet-latest",
+      displayName: "Claude 3.5 Sonnet",
       contextLength: 200000,
       maxCompletionTokens: 8192,
       description:
-        "Most intelligent model with the highest level of intelligence and capability.",
-      regex: /claude-3[.-]7-sonnet.*/i,
+        "Previous flagship model with strong performance across diverse tasks, now superseded by Claude 4.5.",
+      regex: /claude-3[.-]5-sonnet.*/i,
       recommendedFor: ["chat"],
     },
     {
@@ -116,7 +147,7 @@ export const Anthropic: ModelProvider = {
       contextLength: 100000,
       maxCompletionTokens: 4096,
       description:
-        "Our cheapest small and fast model, a predecessor of Claude Haiku.",
+        "Anthropic's cheapest small and fast model, a predecessor of Claude Haiku.",
       regex: /claude-instant-1\.2/i,
     },
   ],
diff --git a/packages/llm-info/src/providers/cometapi.ts b/packages/llm-info/src/providers/cometapi.ts
index bb11aea616d..3efe24dc671 100644
--- a/packages/llm-info/src/providers/cometapi.ts
+++ b/packages/llm-info/src/providers/cometapi.ts
@@ -79,6 +79,24 @@ export const CometAPI: ModelProvider = {
     },
 
     // Claude Series
+    {
+      model: "claude-sonnet-4-5",
+      displayName: "Claude 4.5 Sonnet",
+      contextLength: 200000,
+      maxCompletionTokens: 64000,
+      description:
+        "Anthropic's smartest model for complex agents and coding with exceptional performance in reasoning and multilingual tasks.",
+      recommendedFor: ["chat"],
+    },
+    {
+      model: "claude-haiku-4-5-20251001",
+      displayName: "Claude 4.5 Haiku (2025-10-01)",
+      contextLength: 200000,
+      maxCompletionTokens: 64000,
+      description:
+        "Anthropic's fastest model with near-frontier intelligence, ideal for quick and accurate responses.",
+      recommendedFor: ["chat"],
+    },
     {
       model: "claude-opus-4-1-20250805",
       displayName: "Claude Opus 4.1 (2025-08-05)",
diff --git a/packages/openai-adapters/src/apis/OpenRouter.test.ts b/packages/openai-adapters/src/apis/OpenRouter.test.ts
index 6b7175446b8..e62e2123f17 100644
--- a/packages/openai-adapters/src/apis/OpenRouter.test.ts
+++ b/packages/openai-adapters/src/apis/OpenRouter.test.ts
@@ -14,7 +14,7 @@ describe("OpenRouterApi Anthropic caching", () => {
     const api = new OpenRouterApi(baseConfig);
 
     const body: ChatCompletionCreateParams = {
-      model: "anthropic/claude-3.5-sonnet",
+      model: "anthropic/claude-sonnet-4-5",
       messages: [
         { role: "user", content: "First" },
         { role: "assistant", content: "Resp" },
@@ -161,7 +161,7 @@ describe("OpenRouterApi Anthropic caching", () => {
   describe("applyAnthropicCachingToOpenRouterBody", () => {
     it("mutates OpenAI chat body with system and tool caching", () => {
       const body: ChatCompletionCreateParams = {
-        model: "anthropic/claude-3.5-sonnet",
+        model: "anthropic/claude-sonnet-4-5",
         messages: [
           { role: "system", content: "You are helpful" },
           { role: "user", content: "Alpha" },
@@ -241,7 +241,7 @@ describe("OpenRouterApi Anthropic caching", () => {
 
     it("leaves system untouched when strategy is none while caching users", () => {
       const body: ChatCompletionCreateParams = {
-        model: "anthropic/claude-3.5-sonnet",
+        model: "anthropic/claude-sonnet-4-5",
         messages: [
           { role: "system", content: "Stay focused" },
           { role: "user", content: "Question" },
@@ -276,7 +276,7 @@ describe("OpenRouterApi Anthropic caching", () => {
 
     it("adds cache_control only to final text segment of user arrays", () => {
       const body: ChatCompletionCreateParams = {
-        model: "anthropic/claude-3.5-sonnet",
+        model: "anthropic/claude-sonnet-4-5",
         messages: [
           {
             role: "user",
diff --git a/packages/openai-adapters/src/test/anthropic-adapter.vitest.ts b/packages/openai-adapters/src/test/anthropic-adapter.vitest.ts
index 859bcab02ad..dba75137cd5 100644
--- a/packages/openai-adapters/src/test/anthropic-adapter.vitest.ts
+++ b/packages/openai-adapters/src/test/anthropic-adapter.vitest.ts
@@ -35,7 +35,7 @@ describe("Anthropic Adapter Tests", () => {
       methodToTest: "chatCompletionNonStream",
       params: [
         {
-          model: "claude-3-5-sonnet-20241022",
+          model: "claude-sonnet-4-5",
           messages: [{ role: "user", content: "hello" }],
         },
         new AbortController().signal,
@@ -62,7 +62,7 @@ describe("Anthropic Adapter Tests", () => {
             },
           ],
           system: undefined,
-          model: "claude-3-5-sonnet-20241022",
+          model: "claude-sonnet-4-5",
           max_tokens: 32000,
           stream: undefined,
         },
@@ -77,7 +77,7 @@ describe("Anthropic Adapter Tests", () => {
             text: "Hello! How can I help you today?",
           },
         ],
-        model: "claude-3-5-sonnet-20241022",
+        model: "claude-sonnet-4-5",
         stop_reason: "end_turn",
         stop_sequence: null,
         usage: {
@@ -98,7 +98,7 @@ describe("Anthropic Adapter Tests", () => {
       methodToTest: "chatCompletionStream",
       params: [
         {
-          model: "claude-3-5-sonnet-20241022",
+          model: "claude-sonnet-4-5",
           messages: [{ role: "user", content: "hello" }],
           stream: true,
         },
@@ -126,7 +126,7 @@ describe("Anthropic Adapter Tests", () => {
             },
           ],
           system: undefined,
-          model: "claude-3-5-sonnet-20241022",
+          model: "claude-sonnet-4-5",
           max_tokens: 32000,
           stream: true,
         },
@@ -160,7 +160,7 @@ describe("Anthropic Adapter Tests", () => {
       methodToTest: "chatCompletionStream",
       params: [
         {
-          model: "claude-3-5-sonnet-20241022",
+          model: "claude-sonnet-4-5",
           messages: [
             { role: "system", content: "You are a helpful assistant." },
             { role: "user", content: "hello" },
@@ -197,7 +197,7 @@ describe("Anthropic Adapter Tests", () => {
               cache_control: { type: "ephemeral" },
             },
           ],
-          model: "claude-3-5-sonnet-20241022",
+          model: "claude-sonnet-4-5",
           max_tokens: 32000,
           stream: true,
         },
diff --git a/packages/openai-adapters/src/test/main.test.ts b/packages/openai-adapters/src/test/main.test.ts
index 3b7b96193e6..8a10c8b727f 100644
--- a/packages/openai-adapters/src/test/main.test.ts
+++ b/packages/openai-adapters/src/test/main.test.ts
@@ -70,7 +70,7 @@ const TESTS: Omit<ModelConfig & { options?: TestConfigOptions }, "name">[] = [
   },
   {
     provider: "anthropic",
-    model: "claude-3-5-haiku-latest",
+    model: "claude-haiku-4-5",
     apiKey: process.env.ANTHROPIC_API_KEY!,
     roles: ["chat"],
     options: {