diff --git a/packages/app/src/lib/settings/ai-settings.test.ts b/packages/app/src/lib/settings/ai-settings.test.ts
index 571be9cd..bfb1eb1d 100644
--- a/packages/app/src/lib/settings/ai-settings.test.ts
+++ b/packages/app/src/lib/settings/ai-settings.test.ts
@@ -146,18 +146,25 @@ describe("AI settings", () => {
     expect(settings.providers[0]?.type).toBe("openai-compatible");
   });
 
-  it("refreshes stale built-in AI provider model defaults from stored settings", async () => {
+  it("adds current built-in models without overwriting stored models or defaults", async () => {
     store.get.mockResolvedValue({
-      defaultModelId: "gpt-4o",
+      defaultModelId: "gpt-5.5",
       defaultProviderId: "openai",
       providers: [
         {
           apiKey: "",
           baseUrl: "",
-          defaultModelId: "gpt-4o",
+          defaultModelId: "gpt-5.5",
           enabled: false,
           id: "openai",
-          models: [{ capability: "text", enabled: true, id: "gpt-4o", name: "GPT-4o" }],
+          models: [
+            { capability: "reasoning", enabled: false, id: "gpt-5.5", name: "My GPT-5.5" },
+            { capability: "reasoning", enabled: true, id: "gpt-5.4", name: "GPT-5.4" },
+            { capability: "reasoning", enabled: true, id: "gpt-5.4-mini", name: "GPT-5.4 mini" },
+            { capability: "reasoning", enabled: true, id: "gpt-5.4-nano", name: "GPT-5.4 nano" },
+            { capability: "image", enabled: true, id: "gpt-image-2", name: "GPT Image 2" },
+            { capabilities: ["text", "tools"], enabled: true, id: "gpt-custom", name: "My custom model" }
+          ],
           name: "OpenAI",
           type: "openai"
         },
@@ -183,9 +190,32 @@ describe("AI settings", () => {
 
     expect(settings.defaultModelId).toBe("gpt-5.5");
     expect(openai?.defaultModelId).toBe("gpt-5.5");
-    expect(openai?.models.map((model) => model.id)).toEqual(["gpt-5.5", "gpt-5.4", "gpt-5.4-mini", "gpt-5.4-nano", "gpt-image-2"]);
-    expect(deepseek?.defaultModelId).toBe("deepseek-v4-pro");
-    expect(deepseek?.models.map((model) => model.id)).toEqual(["deepseek-v4-pro", "deepseek-v4-flash"]);
+    expect(openai?.models.map((model) => model.id)).toEqual([
+      "gpt-5.5",
+      "gpt-5.4",
+      "gpt-5.4-mini",
+      "gpt-5.4-nano",
+      "gpt-image-2",
+      "gpt-custom",
+      "gpt-5.6-sol",
+      "gpt-5.6-terra",
+      "gpt-5.6-luna"
+    ]);
+    expect(openai?.models.find((model) => model.id === "gpt-5.5")).toMatchObject({
+      enabled: false,
+      name: "My GPT-5.5"
+    });
+    expect(openai?.models.find((model) => model.id === "gpt-custom")).toMatchObject({
+      capabilities: ["text", "tools"],
+      name: "My custom model"
+    });
+    expect(deepseek?.defaultModelId).toBe("deepseek-chat");
+    expect(deepseek?.models.map((model) => model.id)).toEqual([
+      "deepseek-chat",
+      "deepseek-reasoner",
+      "deepseek-v4-pro",
+      "deepseek-v4-flash"
+    ]);
   });
 
   it("preserves user-added AI provider models during normalization", async () => {
@@ -199,7 +229,10 @@ describe("AI settings", () => {
           defaultModelId: "gpt-custom",
           enabled: true,
           id: "openai",
-          models: [{ capability: "text", enabled: true, id: "gpt-custom", name: "GPT Custom" }],
+          models: [
+            { capability: "reasoning", enabled: false, id: "gpt-5.5", name: "My GPT-5.5" },
+            { capability: "text", enabled: true, id: "gpt-custom", name: "GPT Custom" }
+          ],
           name: "OpenAI",
           type: "openai"
         },
@@ -219,7 +252,10 @@ describe("AI settings", () => {
     const settings = await getStoredAiSettings();
 
     expect(settings.defaultModelId).toBe("gpt-custom");
-    expect(settings.providers.find((provider) => provider.id === "openai")?.models.map((model) => model.id)).toEqual(["gpt-custom"]);
+    expect(settings.providers.find((provider) => provider.id === "openai")?.models.map((model) => model.id)).toEqual([
+      "gpt-5.5",
+      "gpt-custom"
+    ]);
     expect(settings.providers.find((provider) => provider.id === "custom-provider-1")?.models.map((model) => model.id)).toEqual([
       "writer-model"
     ]);
diff --git a/packages/providers/src/catalog.ts b/packages/providers/src/catalog.ts
index 17f8e377..888b8edc 100644
--- a/packages/providers/src/catalog.ts
+++ b/packages/providers/src/catalog.ts
@@ -25,10 +25,13 @@ export const defaultProviderTemplates: AiProviderConfigSeed[] = [
   {
     apiKey: "",
     baseUrl: "https://api.openai.com/v1",
-    defaultModelId: "gpt-5.5",
+    defaultModelId: "gpt-5.6-sol",
     enabled: false,
     id: "openai",
     models: [
+      { capabilities: ["text", "vision", "reasoning", "tools", "web"], enabled: true, id: "gpt-5.6-sol", name: "GPT-5.6 Sol" },
+      { capabilities: ["text", "vision", "reasoning", "tools", "web"], enabled: true, id: "gpt-5.6-terra", name: "GPT-5.6 Terra" },
+      { capabilities: ["text", "vision", "reasoning", "tools", "web"], enabled: true, id: "gpt-5.6-luna", name: "GPT-5.6 Luna" },
       { capabilities: ["text", "vision", "reasoning", "tools", "web"], enabled: true, id: "gpt-5.5", name: "GPT-5.5" },
       { capabilities: ["text", "vision", "reasoning", "tools", "web"], enabled: true, id: "gpt-5.4", name: "GPT-5.4" },
       { capabilities: ["text", "vision", "reasoning", "tools", "web"], enabled: true, id: "gpt-5.4-mini", name: "GPT-5.4 mini" },
@@ -42,10 +45,13 @@ export const defaultProviderTemplates: AiProviderConfigSeed[] = [
   {
     apiKey: "",
     baseUrl: "https://api.anthropic.com/v1",
-    defaultModelId: "claude-opus-4-7",
+    defaultModelId: "claude-opus-5",
     enabled: false,
     id: "anthropic",
     models: [
+      { capabilities: ["text", "vision", "reasoning", "tools", "web"], enabled: true, id: "claude-opus-5", name: "Claude Opus 5" },
+      { capabilities: ["text", "vision", "reasoning", "tools", "web"], enabled: true, id: "claude-fable-5", name: "Claude Fable 5" },
+      { capabilities: ["text", "vision", "reasoning", "tools", "web"], enabled: true, id: "claude-sonnet-5", name: "Claude Sonnet 5" },
       { capabilities: ["text", "vision", "reasoning", "tools", "web"], enabled: true, id: "claude-opus-4-7", name: "Claude Opus 4.7" },
       { capabilities: ["text", "vision", "reasoning", "tools", "web"], enabled: true, id: "claude-sonnet-4-6", name: "Claude Sonnet 4.6" },
       { capabilities: ["text", "vision", "reasoning", "tools"], enabled: true, id: "claude-haiku-4-5", name: "Claude Haiku 4.5" }
@@ -57,10 +63,13 @@ export const defaultProviderTemplates: AiProviderConfigSeed[] = [
   {
     apiKey: "",
     baseUrl: "https://generativelanguage.googleapis.com/v1beta",
-    defaultModelId: "gemini-3.1-pro-preview",
+    defaultModelId: "gemini-3.6-flash",
     enabled: false,
     id: "google",
     models: [
+      { capabilities: ["text", "vision", "reasoning", "tools", "web"], enabled: true, id: "gemini-3.6-flash", name: "Gemini 3.6 Flash" },
+      { capabilities: ["text", "vision", "reasoning", "tools", "web"], enabled: true, id: "gemini-3.5-flash", name: "Gemini 3.5 Flash" },
+      { capabilities: ["text", "vision", "reasoning", "tools", "web"], enabled: true, id: "gemini-3.5-flash-lite", name: "Gemini 3.5 Flash-Lite" },
       { capabilities: ["text", "vision", "reasoning", "tools", "web"], enabled: true, id: "gemini-3.1-pro-preview", name: "Gemini 3.1 Pro Preview" },
       { capabilities: ["text", "vision", "reasoning", "tools", "web"], enabled: true, id: "gemini-3-flash-preview", name: "Gemini 3 Flash Preview" },
       {
@@ -91,13 +100,16 @@ export const defaultProviderTemplates: AiProviderConfigSeed[] = [
   {
     apiKey: "",
     baseUrl: "https://api.mistral.ai/v1",
-    defaultModelId: "mistral-medium-latest",
+    defaultModelId: "mistral-medium-3-5",
     enabled: false,
     id: "mistral",
     models: [
-      { capabilities: ["text", "vision", "tools"], enabled: true, id: "mistral-medium-latest", name: "Mistral Medium 3.5" },
-      { capabilities: ["text", "reasoning", "tools"], enabled: true, id: "mistral-small-latest", name: "Mistral Small 4" },
-      { capabilities: ["text", "vision", "tools"], enabled: true, id: "mistral-large-latest", name: "Mistral Large 3" },
+      { capabilities: ["text", "vision", "tools"], enabled: true, id: "mistral-medium-3-5", name: "Mistral Medium 3.5" },
+      { capabilities: ["text", "reasoning", "tools"], enabled: true, id: "mistral-small-2603", name: "Mistral Small 4" },
+      { capabilities: ["text", "vision", "tools"], enabled: true, id: "mistral-large-2512", name: "Mistral Large 3" },
+      { capabilities: ["text", "vision", "tools"], enabled: true, id: "mistral-medium-latest", name: "Mistral Medium 3.5 (latest alias)" },
+      { capabilities: ["text", "reasoning", "tools"], enabled: true, id: "mistral-small-latest", name: "Mistral Small 4 (latest alias)" },
+      { capabilities: ["text", "vision", "tools"], enabled: true, id: "mistral-large-latest", name: "Mistral Large 3 (latest alias)" },
       { capabilities: ["text", "tools"], enabled: true, id: "devstral-latest", name: "Devstral 2" }
     ],
     name: "Mistral",
@@ -128,6 +140,11 @@ export const defaultProviderTemplates: AiProviderConfigSeed[] = [
     id: "openrouter",
     models: [
       { capabilities: ["text", "vision", "reasoning", "tools", "web"], enabled: true, id: "openrouter/auto", name: "OpenRouter Auto" },
+      { capabilities: ["text", "vision", "reasoning", "tools", "web"], enabled: true, id: "openai/gpt-5.6-sol", name: "GPT-5.6 Sol" },
+      { capabilities: ["text", "vision", "reasoning", "tools", "web"], enabled: true, id: "anthropic/claude-fable-5", name: "Claude Fable 5" },
+      { capabilities: ["text", "vision", "reasoning", "tools", "web"], enabled: true, id: "anthropic/claude-opus-5", name: "Claude Opus 5" },
+      { capabilities: ["text", "vision", "reasoning", "tools", "web"], enabled: true, id: "anthropic/claude-sonnet-5", name: "Claude Sonnet 5" },
+      { capabilities: ["text", "vision", "reasoning", "tools", "web"], enabled: true, id: "google/gemini-3.6-flash", name: "Gemini 3.6 Flash" },
       { capabilities: ["text", "vision", "reasoning", "tools", "web"], enabled: true, id: "openai/gpt-5.5", name: "GPT-5.5" },
       { capabilities: ["text", "vision", "reasoning", "tools"], enabled: true, id: "anthropic/claude-opus-4.7", name: "Claude Opus 4.7" },
       { capabilities: ["text", "vision", "reasoning", "tools"], enabled: true, id: "anthropic/claude-sonnet-4.6", name: "Claude Sonnet 4.6" },
@@ -140,17 +157,25 @@ export const defaultProviderTemplates: AiProviderConfigSeed[] = [
   {
     apiKey: "",
     baseUrl: "https://api.together.xyz/v1",
-    defaultModelId: "moonshotai/Kimi-K2.5",
+    defaultModelId: "moonshotai/Kimi-K2.6",
     enabled: false,
     id: "together",
     models: [
+      {
+        capabilities: ["text", "vision", "reasoning", "tools"],
+        enabled: true,
+        id: "moonshotai/Kimi-K2.6",
+        name: "Kimi K2.6"
+      },
+      { capabilities: ["text", "reasoning", "tools"], enabled: true, id: "zai-org/GLM-5.1", name: "GLM-5.1" },
+      { capabilities: ["text", "reasoning", "tools"], enabled: true, id: "openai/gpt-oss-120b", name: "GPT-OSS 120B" },
+      { capabilities: ["text", "reasoning", "tools"], enabled: true, id: "deepseek-ai/DeepSeek-V4-Pro", name: "DeepSeek V4 Pro" },
       {
         capabilities: ["text", "vision", "reasoning", "tools"],
         enabled: true,
         id: "moonshotai/Kimi-K2.5",
         name: "Kimi K2.5"
       },
-      { capabilities: ["text", "reasoning", "tools"], enabled: true, id: "openai/gpt-oss-120b", name: "GPT-OSS 120B" },
       { capabilities: ["text", "reasoning", "tools"], enabled: true, id: "deepseek-ai/DeepSeek-R1", name: "DeepSeek R1" }
     ],
     name: "Together.ai",
@@ -160,10 +185,13 @@ export const defaultProviderTemplates: AiProviderConfigSeed[] = [
   {
     apiKey: "",
     baseUrl: "https://dashscope.aliyuncs.com/compatible-mode/v1",
-    defaultModelId: "qwen3.6-plus",
+    defaultModelId: "qwen3.8-max",
     enabled: false,
     id: "aliyun-bailian",
     models: [
+      { capabilities: ["text", "vision", "reasoning", "tools", "web"], enabled: true, id: "qwen3.8-max", name: "Qwen3.8 Max" },
+      { capabilities: ["text", "vision", "reasoning", "tools", "web"], enabled: true, id: "qwen3.7-plus", name: "Qwen3.7 Plus" },
+      { capabilities: ["text", "vision", "reasoning", "tools", "web"], enabled: true, id: "qwen3.7-flash", name: "Qwen3.7 Flash" },
       { capabilities: ["text", "vision", "reasoning", "tools", "web"], enabled: true, id: "qwen3.6-plus", name: "Qwen3.6 Plus" },
       { capabilities: ["text", "reasoning", "tools", "web"], enabled: true, id: "qwen3-max", name: "Qwen3 Max" },
       { capabilities: ["text", "tools"], enabled: true, id: "qwen3-coder-plus", name: "Qwen3 Coder Plus" },
@@ -191,10 +219,13 @@ export const defaultProviderTemplates: AiProviderConfigSeed[] = [
   {
     apiKey: "",
     baseUrl: "https://ark.cn-beijing.volces.com/api/v3",
-    defaultModelId: "doubao-seed-1-6-flash-250715",
+    defaultModelId: "doubao-seed-evolving",
     enabled: false,
     id: "volcengine",
     models: [
+      { capabilities: ["text", "vision", "reasoning", "tools", "web"], enabled: true, id: "doubao-seed-evolving", name: "Doubao Seed Evolving" },
+      { capabilities: ["text", "vision", "reasoning", "tools", "web"], enabled: true, id: "doubao-seed-2-1-pro-260628", name: "Doubao Seed 2.1 Pro" },
+      { capabilities: ["text", "vision", "reasoning", "tools", "web"], enabled: true, id: "doubao-seed-2-1-turbo-260628", name: "Doubao Seed 2.1 Turbo" },
       { capabilities: ["text", "vision", "reasoning", "tools", "web"], enabled: true, id: "doubao-seed-1-6-flash-250715", name: "Doubao Seed 1.6 Flash" },
       { capabilities: ["text", "vision", "reasoning", "tools", "web"], enabled: true, id: "doubao-seed-1-6-thinking-250715", name: "Doubao Seed 1.6 Thinking" },
       { capabilities: ["text", "reasoning", "tools"], enabled: true, id: "deepseek-v3-2-250915", name: "DeepSeek V3.2" },
@@ -207,10 +238,11 @@ export const defaultProviderTemplates: AiProviderConfigSeed[] = [
   {
     apiKey: "",
     baseUrl: "https://api.x.ai/v1",
-    defaultModelId: "grok-4.3",
+    defaultModelId: "grok-4.5",
     enabled: false,
     id: "xai",
     models: [
+      { capabilities: ["text", "vision", "reasoning", "tools", "web"], enabled: true, id: "grok-4.5", name: "Grok 4.5" },
       { capabilities: ["text", "vision", "reasoning", "tools", "web"], enabled: true, id: "grok-4.3", name: "Grok 4.3" },
       { capabilities: ["text", "vision", "reasoning", "tools", "web"], enabled: true, id: "grok-4.3-fast", name: "Grok 4.3 Fast" }
     ],
@@ -221,10 +253,13 @@ export const defaultProviderTemplates: AiProviderConfigSeed[] = [
   {
     apiKey: "",
     baseUrl: "https://your-resource-name.openai.azure.com",
-    defaultModelId: "gpt-5.4",
+    defaultModelId: "gpt-5.6-sol",
     enabled: false,
     id: "azure-openai",
     models: [
+      { capabilities: ["text", "vision", "reasoning", "tools", "web"], enabled: true, id: "gpt-5.6-sol", name: "GPT-5.6 Sol deployment" },
+      { capabilities: ["text", "vision", "reasoning", "tools", "web"], enabled: true, id: "gpt-5.6-terra", name: "GPT-5.6 Terra deployment" },
+      { capabilities: ["text", "vision", "reasoning", "tools", "web"], enabled: true, id: "gpt-5.6-luna", name: "GPT-5.6 Luna deployment" },
       { capabilities: ["text", "vision", "reasoning", "tools", "web"], enabled: true, id: "gpt-5.4", name: "GPT-5.4 deployment" },
       { capabilities: ["text", "vision", "reasoning", "tools", "web"], enabled: true, id: "gpt-5.4-mini", name: "GPT-5.4 mini deployment" },
       { capabilities: ["text", "vision", "reasoning", "tools", "web"], enabled: true, id: "gpt-5.4-nano", name: "GPT-5.4 nano deployment" }
@@ -236,13 +271,15 @@ export const defaultProviderTemplates: AiProviderConfigSeed[] = [
   {
     apiKey: "",
     baseUrl: "http://localhost:11434/v1",
-    defaultModelId: "llama3.3",
+    defaultModelId: "qwen3.5",
     enabled: false,
     id: "ollama",
     models: [
+      { capabilities: ["text", "vision", "reasoning", "tools"], enabled: true, id: "qwen3.5", name: "Qwen3.5 9B" },
+      { capabilities: ["text", "vision", "reasoning", "tools"], enabled: true, id: "gemma4:12b", name: "Gemma 4 12B" },
+      { capabilities: ["text", "reasoning", "tools"], enabled: true, id: "gpt-oss:20b", name: "GPT-OSS 20B" },
       { capabilities: ["text"], enabled: true, id: "llama3.3", name: "Llama 3.3" },
-      { capabilities: ["text"], enabled: true, id: "qwen3:32b", name: "Qwen3 32B" },
-      { capabilities: ["text"], enabled: true, id: "gpt-oss:20b", name: "GPT-OSS 20B" }
+      { capabilities: ["text"], enabled: true, id: "qwen3:32b", name: "Qwen3 32B" }
     ],
     name: "Ollama",
     apiStyle: "openai-compatible",
@@ -251,17 +288,33 @@ export const defaultProviderTemplates: AiProviderConfigSeed[] = [
 ];
 
 export const staleDefaultModelIdsByProviderId: Partial<Record<string, string[]>> = {
-  anthropic: ["claude-sonnet-4-5", "claude-opus-4-1", "claude-haiku-3-5"],
-  "azure-openai": ["gpt-4o"],
+  anthropic: ["claude-opus-4-7", "claude-sonnet-4-6", "claude-haiku-4-5", "claude-sonnet-4-5", "claude-opus-4-1", "claude-haiku-3-5"],
+  "aliyun-bailian": ["qwen3.6-plus", "qwen3-max", "qwen3-coder-plus", "qwen3.5-flash"],
+  "azure-openai": ["gpt-5.4", "gpt-5.4-mini", "gpt-5.4-nano", "gpt-4o"],
   deepseek: ["deepseek-chat", "deepseek-reasoner"],
-  google: ["gemini-2.5-pro", "gemini-2.5-flash"],
+  google: ["gemini-3.1-pro-preview", "gemini-3-flash-preview", "gemini-3.1-flash-lite-preview", "gemini-2.5-pro", "gemini-2.5-flash"],
   groq: ["llama-3.3-70b-versatile"],
-  mistral: ["mistral-large-latest", "mistral-small-latest"],
-  ollama: ["llama"],
-  openai: ["gpt-5.4", "gpt-5.4-mini", "gpt-5.4-nano", "gpt-image-1.5", "gpt-5", "gpt-5-mini", "gpt-4o"],
-  openrouter: ["openrouter/auto"],
-  together: ["meta-llama/Llama-3.3-70B-Instruct-Turbo"],
-  xai: ["grok-4"]
+  mistral: ["mistral-medium-latest", "mistral-small-latest", "mistral-large-latest", "devstral-latest"],
+  ollama: ["llama3.3", "qwen3:32b", "gpt-oss:20b", "llama"],
+  openai: ["gpt-5.5", "gpt-5.4", "gpt-5.4-mini", "gpt-5.4-nano", "gpt-image-2", "gpt-image-1.5", "gpt-5", "gpt-5-mini", "gpt-4o"],
+  openrouter: ["openrouter/auto", "openai/gpt-5.5", "anthropic/claude-opus-4.7", "anthropic/claude-sonnet-4.6", "google/gemini-3.1-pro-preview"],
+  together: ["moonshotai/Kimi-K2.5", "openai/gpt-oss-120b", "deepseek-ai/DeepSeek-R1", "meta-llama/Llama-3.3-70B-Instruct-Turbo"],
+  volcengine: ["doubao-seed-1-6-flash-250715", "doubao-seed-1-6-thinking-250715", "deepseek-v3-2-250915", "deepseek-r1-250528"],
+  xai: ["grok-4.3", "grok-4.3-fast", "grok-4"]
+};
+
+export const previousDefaultModelIdsByProviderId: Partial<Record<string, string[]>> = {
+  anthropic: ["claude-opus-4-7", "claude-sonnet-4-6", "claude-haiku-4-5"],
+  "aliyun-bailian": ["qwen3.6-plus", "qwen3-max", "qwen3-coder-plus", "qwen3.5-flash"],
+  "azure-openai": ["gpt-5.4", "gpt-5.4-mini", "gpt-5.4-nano"],
+  google: ["gemini-3.1-pro-preview", "gemini-3-flash-preview", "gemini-3.1-flash-lite-preview"],
+  mistral: ["mistral-medium-latest", "mistral-small-latest", "mistral-large-latest", "devstral-latest"],
+  ollama: ["llama3.3", "qwen3:32b", "gpt-oss:20b"],
+  openai: ["gpt-5.5", "gpt-5.4", "gpt-5.4-mini", "gpt-5.4-nano", "gpt-image-2"],
+  openrouter: ["openrouter/auto", "openai/gpt-5.5", "anthropic/claude-opus-4.7", "anthropic/claude-sonnet-4.6", "google/gemini-3.1-pro-preview"],
+  together: ["moonshotai/Kimi-K2.5", "openai/gpt-oss-120b", "deepseek-ai/DeepSeek-R1"],
+  volcengine: ["doubao-seed-1-6-flash-250715", "doubao-seed-1-6-thinking-250715", "deepseek-v3-2-250915", "deepseek-r1-250528"],
+  xai: ["grok-4.3", "grok-4.3-fast"]
 };
 
 export function defaultProviderTemplateForProviderId(providerId: string): AiProviderConfigSeed | undefined {
diff --git a/packages/providers/src/requests.test.ts b/packages/providers/src/requests.test.ts
index 5eb276f7..78831134 100644
--- a/packages/providers/src/requests.test.ts
+++ b/packages/providers/src/requests.test.ts
@@ -24,6 +24,8 @@ describe("AI provider requests", () => {
   it("ships mainstream providers by default", () => {
     const settings = createDefaultAiSettings();
     const providerIds = settings.providers.map((item) => item.id);
+    const findModelIds = (providerId: string) =>
+      settings.providers.find((item) => item.id === providerId)?.models.map((model) => model.id);
     const findModelCapabilities = (providerId: string, modelId: string) =>
       settings.providers.find((item) => item.id === providerId)?.models.find((model) => model.id === modelId)?.capabilities;
 
@@ -45,48 +47,124 @@ describe("AI provider requests", () => {
       ])
     );
     expect(providerIds).not.toContain("openai-compatible");
-    expect(settings.defaultModelId).toBe("gpt-5.5");
+    expect(settings.defaultModelId).toBe("gpt-5.6-sol");
     expect(settings.providers).toEqual(
       expect.arrayContaining([
-        expect.objectContaining({ defaultModelId: "gpt-5.5", id: "openai" }),
-        expect.objectContaining({ defaultModelId: "claude-opus-4-7", id: "anthropic" }),
-        expect.objectContaining({ defaultModelId: "gemini-3.1-pro-preview", id: "google" }),
+        expect.objectContaining({ defaultModelId: "gpt-5.6-sol", id: "openai" }),
+        expect.objectContaining({ defaultModelId: "claude-opus-5", id: "anthropic" }),
+        expect.objectContaining({ defaultModelId: "gemini-3.6-flash", id: "google" }),
         expect.objectContaining({ defaultModelId: "deepseek-v4-pro", id: "deepseek" }),
-        expect.objectContaining({ defaultModelId: "mistral-medium-latest", id: "mistral" }),
+        expect.objectContaining({ defaultModelId: "mistral-medium-3-5", id: "mistral" }),
         expect.objectContaining({ defaultModelId: "groq/compound", id: "groq" }),
         expect.objectContaining({ defaultModelId: "openrouter/auto", id: "openrouter" }),
-        expect.objectContaining({ defaultModelId: "moonshotai/Kimi-K2.5", id: "together" }),
-        expect.objectContaining({ defaultModelId: "qwen3.6-plus", id: "aliyun-bailian", type: "openai-compatible" }),
+        expect.objectContaining({ defaultModelId: "moonshotai/Kimi-K2.6", id: "together" }),
+        expect.objectContaining({ defaultModelId: "qwen3.8-max", id: "aliyun-bailian", type: "openai-compatible" }),
         expect.objectContaining({
           baseUrl: "https://api.xiaomimimo.com/v1",
           defaultModelId: "mimo-v2.5-pro",
           id: "xiaomi-mimo",
           type: "openai-compatible"
         }),
-        expect.objectContaining({ defaultModelId: "doubao-seed-1-6-flash-250715", id: "volcengine", type: "openai-compatible" }),
-        expect.objectContaining({ defaultModelId: "grok-4.3", id: "xai" }),
-        expect.objectContaining({ defaultModelId: "gpt-5.4", id: "azure-openai" }),
-        expect.objectContaining({ defaultModelId: "llama3.3", id: "ollama" })
+        expect.objectContaining({ defaultModelId: "doubao-seed-evolving", id: "volcengine", type: "openai-compatible" }),
+        expect.objectContaining({ defaultModelId: "grok-4.5", id: "xai" }),
+        expect.objectContaining({ defaultModelId: "gpt-5.6-sol", id: "azure-openai" }),
+        expect.objectContaining({ defaultModelId: "qwen3.5", id: "ollama" })
       ])
     );
-    expect(settings.providers.find((item) => item.id === "openai")?.models.map((model) => model.id)).toEqual([
+    expect(findModelIds("openai")).toEqual([
+      "gpt-5.6-sol",
+      "gpt-5.6-terra",
+      "gpt-5.6-luna",
       "gpt-5.5",
       "gpt-5.4",
       "gpt-5.4-mini",
       "gpt-5.4-nano",
       "gpt-image-2"
     ]);
+    expect(findModelIds("anthropic")).toEqual([
+      "claude-opus-5",
+      "claude-fable-5",
+      "claude-sonnet-5",
+      "claude-opus-4-7",
+      "claude-sonnet-4-6",
+      "claude-haiku-4-5"
+    ]);
+    expect(findModelIds("google")).toEqual([
+      "gemini-3.6-flash",
+      "gemini-3.5-flash",
+      "gemini-3.5-flash-lite",
+      "gemini-3.1-pro-preview",
+      "gemini-3-flash-preview",
+      "gemini-3.1-flash-lite-preview"
+    ]);
+    expect(findModelIds("mistral")).toEqual([
+      "mistral-medium-3-5",
+      "mistral-small-2603",
+      "mistral-large-2512",
+      "mistral-medium-latest",
+      "mistral-small-latest",
+      "mistral-large-latest",
+      "devstral-latest"
+    ]);
+    expect(findModelIds("openrouter")).toEqual([
+      "openrouter/auto",
+      "openai/gpt-5.6-sol",
+      "anthropic/claude-fable-5",
+      "anthropic/claude-opus-5",
+      "anthropic/claude-sonnet-5",
+      "google/gemini-3.6-flash",
+      "openai/gpt-5.5",
+      "anthropic/claude-opus-4.7",
+      "anthropic/claude-sonnet-4.6",
+      "google/gemini-3.1-pro-preview"
+    ]);
+    expect(findModelIds("together")).toEqual([
+      "moonshotai/Kimi-K2.6",
+      "zai-org/GLM-5.1",
+      "openai/gpt-oss-120b",
+      "deepseek-ai/DeepSeek-V4-Pro",
+      "moonshotai/Kimi-K2.5",
+      "deepseek-ai/DeepSeek-R1"
+    ]);
+    expect(findModelIds("aliyun-bailian")).toEqual([
+      "qwen3.8-max",
+      "qwen3.7-plus",
+      "qwen3.7-flash",
+      "qwen3.6-plus",
+      "qwen3-max",
+      "qwen3-coder-plus",
+      "qwen3.5-flash"
+    ]);
+    expect(findModelIds("volcengine")).toEqual([
+      "doubao-seed-evolving",
+      "doubao-seed-2-1-pro-260628",
+      "doubao-seed-2-1-turbo-260628",
+      "doubao-seed-1-6-flash-250715",
+      "doubao-seed-1-6-thinking-250715",
+      "deepseek-v3-2-250915",
+      "deepseek-r1-250528"
+    ]);
+    expect(findModelIds("xai")).toEqual(["grok-4.5", "grok-4.3", "grok-4.3-fast"]);
+    expect(findModelIds("azure-openai")).toEqual([
+      "gpt-5.6-sol",
+      "gpt-5.6-terra",
+      "gpt-5.6-luna",
+      "gpt-5.4",
+      "gpt-5.4-mini",
+      "gpt-5.4-nano"
+    ]);
+    expect(findModelIds("ollama")).toEqual(["qwen3.5", "gemma4:12b", "gpt-oss:20b", "llama3.3", "qwen3:32b"]);
     expect(settings.providers.find((item) => item.id === "deepseek")?.models.map((model) => model.id)).not.toContain(
       "deepseek-chat"
     );
-    expect(findModelCapabilities("openai", "gpt-5.5")).toEqual(["text", "vision", "reasoning", "tools", "web"]);
+    expect(findModelCapabilities("openai", "gpt-5.6-sol")).toEqual(["text", "vision", "reasoning", "tools", "web"]);
     expect(findModelCapabilities("anthropic", "claude-haiku-4-5")).toEqual([
       "text",
       "vision",
       "reasoning",
       "tools"
     ]);
-    expect(findModelCapabilities("google", "gemini-3-flash-preview")).toEqual([
+    expect(findModelCapabilities("google", "gemini-3.6-flash")).toEqual([
       "text",
       "vision",
       "reasoning",
@@ -94,14 +172,14 @@ describe("AI provider requests", () => {
       "web"
     ]);
     expect(findModelCapabilities("deepseek", "deepseek-v4-pro")).toEqual(["text", "reasoning", "tools"]);
-    expect(findModelCapabilities("mistral", "mistral-large-latest")).toEqual(["text", "vision", "tools"]);
-    expect(findModelCapabilities("together", "moonshotai/Kimi-K2.5")).toEqual([
+    expect(findModelCapabilities("mistral", "mistral-large-2512")).toEqual(["text", "vision", "tools"]);
+    expect(findModelCapabilities("together", "moonshotai/Kimi-K2.6")).toEqual([
       "text",
       "vision",
       "reasoning",
       "tools"
     ]);
-    expect(findModelCapabilities("aliyun-bailian", "qwen3.6-plus")).toEqual([
+    expect(findModelCapabilities("aliyun-bailian", "qwen3.8-max")).toEqual([
       "text",
       "vision",
       "reasoning",
@@ -117,30 +195,18 @@ describe("AI provider requests", () => {
     ]);
     expect(findModelCapabilities("xiaomi-mimo", "mimo-v2.5-pro")).toContain("web");
     expect(findModelCapabilities("xiaomi-mimo", "mimo-v2.5-flash")).toContain("web");
-    expect(findModelCapabilities("volcengine", "doubao-seed-1-6-flash-250715")).toEqual([
+    expect(findModelCapabilities("volcengine", "doubao-seed-evolving")).toEqual([
       "text",
       "vision",
       "reasoning",
       "tools",
       "web"
     ]);
-    expect(settings.providers.find((item) => item.id === "aliyun-bailian")?.models.map((model) => model.id)).toEqual([
-      "qwen3.6-plus",
-      "qwen3-max",
-      "qwen3-coder-plus",
-      "qwen3.5-flash"
-    ]);
     expect(settings.providers.find((item) => item.id === "xiaomi-mimo")?.models.map((model) => model.id)).toEqual([
       "mimo-v2.5-pro",
       "mimo-v2.5",
       "mimo-v2.5-flash"
     ]);
-    expect(settings.providers.find((item) => item.id === "volcengine")?.models.map((model) => model.id)).toEqual([
-      "doubao-seed-1-6-flash-250715",
-      "doubao-seed-1-6-thinking-250715",
-      "deepseek-v3-2-250915",
-      "deepseek-r1-250528"
-    ]);
   });
 
   it("builds provider-specific model list requests", () => {
diff --git a/packages/providers/src/settings.ts b/packages/providers/src/settings.ts
index 7cf2c770..6016634d 100644
--- a/packages/providers/src/settings.ts
+++ b/packages/providers/src/settings.ts
@@ -4,6 +4,7 @@ import {
   defaultApiUrlForStoredProvider,
   defaultProviderTemplateForProviderId,
   defaultProviderTemplates,
+  previousDefaultModelIdsByProviderId,
   staleDefaultModelIdsByProviderId
 } from "./catalog";
 import { enrichAiProviderModelCapabilities, readModelCapabilities } from "./capabilities";
@@ -22,11 +23,11 @@ const legacyBuiltInProviderIds = new Set(["openai-compatible"]);
 
 export function createDefaultAiSettings(): AiProviderSettings {
   return {
-    agentDefaultModelId: "gpt-5.5",
+    agentDefaultModelId: "gpt-5.6-sol",
     agentDefaultProviderId: "openai",
-    defaultModelId: "gpt-5.5",
+    defaultModelId: "gpt-5.6-sol",
     defaultProviderId: "openai",
-    inlineDefaultModelId: "gpt-5.5",
+    inlineDefaultModelId: "gpt-5.6-sol",
     inlineDefaultProviderId: "openai",
     providers: defaultProviderTemplates.map(cloneProvider)
   };
@@ -110,7 +111,7 @@ function normalizeProvider(value: unknown): AiProviderConfig | null {
   const shouldRefreshDefaultModels = shouldRefreshStoredDefaultModels(providerId, storedModels);
   const models =
     shouldRefreshDefaultModels && defaultProvider
-      ? defaultProvider.models.map(cloneModel)
+      ? mergeDefaultModels(storedModels, defaultProvider.models)
       : storedModels.length > 0
         ? storedModels
         : defaultProvider?.models.map(cloneModel) ?? [
@@ -146,9 +147,19 @@ function shouldRefreshStoredDefaultModels(providerId: string, models: AiProvider
   if (!staleModelIds || models.length === 0 || providerId.startsWith("custom-provider-")) return false;
 
   const staleModelIdSet = new Set(staleModelIds);
+  const storedModelIdSet = new Set(models.map((model) => model.id));
+  const previousDefaultModelIds = previousDefaultModelIdsByProviderId[providerId];
+  const containsPreviousDefaults = previousDefaultModelIds?.every((modelId) => storedModelIdSet.has(modelId)) ?? false;
 
-  // Only auto-upgrade lists that still look exactly like Markra's older built-in seeds.
-  return models.every((model) => staleModelIdSet.has(model.id));
+  // A complete previous seed may also contain user-added models; merging keeps those entries intact.
+  return containsPreviousDefaults || models.every((model) => staleModelIdSet.has(model.id));
+}
+
+function mergeDefaultModels(storedModels: AiProviderModel[], defaultModels: AiProviderModelSeed[]) {
+  const storedModelIds = new Set(storedModels.map((model) => model.id));
+
+  // Keep stored entries and their order; only append built-in models that are missing.
+  return [...storedModels, ...defaultModels.filter((model) => !storedModelIds.has(model.id)).map(cloneModel)];
 }
 
 function normalizeModel(value: unknown): AiProviderModel | null {