diff --git a/apps/desktop/src/renderer/settings/provider-display-copy.ts b/apps/desktop/src/renderer/settings/provider-display-copy.ts
index 14de01deda..0cbff98c49 100644
--- a/apps/desktop/src/renderer/settings/provider-display-copy.ts
+++ b/apps/desktop/src/renderer/settings/provider-display-copy.ts
@@ -244,6 +244,10 @@ export const PROVIDER_DISPLAY_COPY = {
     'zh-TW': { name: 'DeepInfra', description: '開源模型託管推理 · OpenAI 相容', badge: 'API' },
     en: { name: 'DeepInfra', description: 'Hosted open-model inference · OpenAI-compatible', badge: 'API' },
   },
+  atlascloud: {
+    zh: { name: 'Atlas Cloud', description: '开源模型托管推理 · OpenAI 兼容', badge: 'API' },
+    en: { name: 'Atlas Cloud', description: 'Hosted open-model inference · OpenAI-compatible', badge: 'API' },
+  },
   cohere: {
     'zh-CN': { name: 'Cohere', description: 'Cohere 官方接入', badge: 'API' },
     'zh-TW': { name: 'Cohere', description: 'Cohere 官方 API 連線', badge: 'API' },
diff --git a/packages/core/src/__tests__/llm-connections.test.ts b/packages/core/src/__tests__/llm-connections.test.ts
index 5399065a50..bc18382597 100644
--- a/packages/core/src/__tests__/llm-connections.test.ts
+++ b/packages/core/src/__tests__/llm-connections.test.ts
@@ -24,7 +24,12 @@ import {
   lookupModelMetadata,
   modelIdAliasesForProvider,
 } from '../model-metadata.js';
-import { PROVIDER_REGISTRY, providerFallbackModelIds } from '../provider-registry.js';
+import {
+  CATALOG_PROVIDER_TYPES,
+  PROVIDER_REGISTRY,
+  RECOMMENDED_PROVIDER_TYPES,
+  providerFallbackModelIds,
+} from '../provider-registry.js';
 import {
   authorizeConnectionModel,
   effectiveBaseUrl,
@@ -70,6 +75,23 @@ test('slug validation returns stable issues and preserves format and length boun
   }
 });
 
+test('Atlas Cloud is wired as a ready OpenAI-compatible provider', () => {
+  assert.deepEqual(PROVIDER_REGISTRY.atlascloud, {
+    label: 'Atlas Cloud',
+    baseUrl: 'https://api.atlascloud.ai/v1',
+    authKind: 'api_key',
+    fallbackModels: ['qwen/qwen3.8-max'],
+    status: 'ready',
+    runtimeAdapter: { kind: 'openai-compatible', name: 'provider' },
+    modelDiscovery: { kind: 'protocol', path: '/v1/models' },
+    category: 'overseas',
+    catalogGroup: 'api',
+    signupUrl: 'https://atlascloud.ai',
+    catalogOrder: 29.5,
+  });
+  assert.equal(CATALOG_PROVIDER_TYPES.includes('atlascloud'), true);
+});
+
 test('connection base URLs allow HTTP(S) and reject unsafe or malformed inputs', () => {
   assert.equal(validateConnectionBaseUrl(undefined), null);
   assert.equal(validateConnectionBaseUrl('https://api.example.com/v1'), null);
diff --git a/packages/core/src/model-metadata.ts b/packages/core/src/model-metadata.ts
index b90bff617e..25920715f7 100644
--- a/packages/core/src/model-metadata.ts
+++ b/packages/core/src/model-metadata.ts
@@ -417,6 +417,20 @@ function buildStaticModelMetadata(active: ModelsDevMetadata): ModelsDevMetadata
         thinkingOptions: { efforts: ['none', 'low', 'medium', 'high'], toggle: true },
       },
     },
+    atlascloud: {
+      // vision is pinned false rather than left undeclared: Atlas Cloud's
+      // OpenAI-compatible /v1/chat/completions rejects an image_url content
+      // part with HTTP 400 even for its vision-branded models (verified
+      // 2026-09-05 against qwen/qwen3.8-max and qwen/qwen3-vl-235b-a22b-
+      // thinking; a text-only parts array on the same models returns 200).
+      // Declaring vision here would make the runtime send attachments the
+      // endpoint cannot accept.
+      'qwen/qwen3.8-max': {
+        displayName: 'Qwen3.8 Max',
+        lifecycle: 'active',
+        capabilities: { chat: true, reasoning: true, functionCalling: true, vision: false },
+      },
+    },
     groq: {
       // Groq documents reasoning_effort only for the gpt-oss family
       // (low/medium/high) and qwen3.6-27b (none/default); see
diff --git a/packages/core/src/provider-registry.ts b/packages/core/src/provider-registry.ts
index 0b9ae9897a..5d4510dfe5 100644
--- a/packages/core/src/provider-registry.ts
+++ b/packages/core/src/provider-registry.ts
@@ -1352,6 +1352,19 @@ const providerRegistry = {
     signupUrl: 'https://deepinfra.com/dash/api_keys',
     catalogOrder: 29,
   },
+  atlascloud: {
+    label: 'Atlas Cloud',
+    baseUrl: 'https://api.atlascloud.ai/v1',
+    authKind: 'api_key',
+    fallbackModels: ['qwen/qwen3.8-max'],
+    status: 'ready',
+    runtimeAdapter: { kind: 'openai-compatible', name: 'provider' },
+    modelDiscovery: { kind: 'protocol', path: '/v1/models' },
+    category: 'overseas',
+    catalogGroup: 'api',
+    signupUrl: 'https://atlascloud.ai',
+    catalogOrder: 29.5,
+  },
   groq: {
     label: groq.name,
     baseUrl: 'https://api.groq.com/openai/v1',