diff --git a/src/renderer/components/icons/ProviderIcon.tsx b/src/renderer/components/icons/ProviderIcon.tsx
index 0aceb77af4..832869b3ed 100644
--- a/src/renderer/components/icons/ProviderIcon.tsx
+++ b/src/renderer/components/icons/ProviderIcon.tsx
@@ -41,6 +41,16 @@ export default function ProviderIcon(props: { className?: string; size?: number;
           />
         </>
       )}
+      {provider === ModelProviderEnum.Modelsell && (
+        <path
+          d="M15 6v12a3 3 0 1 0 3-3H6a3 3 0 1 0 3 3V6a3 3 0 1 0-3 3h12a3 3 0 1 0-3-3"
+          fill="none"
+          stroke="currentColor"
+          strokeLinecap="round"
+          strokeLinejoin="round"
+          strokeWidth="2"
+        />
+      )}
       {provider === ModelProviderEnum.Azure && (
         <>
           <path
diff --git a/src/renderer/components/settings/provider/providerIcons.tsx b/src/renderer/components/settings/provider/providerIcons.tsx
index e41654bacb..23a89405c8 100644
--- a/src/renderer/components/settings/provider/providerIcons.tsx
+++ b/src/renderer/components/settings/provider/providerIcons.tsx
@@ -29,6 +29,7 @@ export const FEATURED_PROVIDER_IDS: string[] = [
   ModelProviderEnum.SiliconFlow,
   ModelProviderEnum.DeepSeek,
   ModelProviderEnum.OpenRouter,
+  ModelProviderEnum.Modelsell,
   ModelProviderEnum.Ollama,
 ]
 
diff --git a/src/shared/models/index.test.ts b/src/shared/models/index.test.ts
index 62bc96d9ba..1ef05b3cd8 100644
--- a/src/shared/models/index.test.ts
+++ b/src/shared/models/index.test.ts
@@ -132,6 +132,7 @@ describe('getModel', () => {
     [ModelProviderEnum.MiniMaxCN, 'MiniMax-M2.5', 'https://api.minimaxi.com/v1'],
     [ModelProviderEnum.Moonshot, 'kimi-k2.5', 'https://api.moonshot.ai/v1'],
     [ModelProviderEnum.MoonshotCN, 'kimi-k2.5', 'https://api.moonshot.cn/v1'],
+    [ModelProviderEnum.Modelsell, 'test-model', 'https://modelsell.com/v1'],
   ])('returns OpenAI-compatible model instances for %s', (provider, modelId, apiHost) => {
     const sessionSettings: SessionSettings = {
       provider,
diff --git a/src/shared/models/index.ts b/src/shared/models/index.ts
index 304c6909a5..a6e9d31e0e 100644
--- a/src/shared/models/index.ts
+++ b/src/shared/models/index.ts
@@ -28,6 +28,7 @@ export const aiProviderNameHash: Record<ModelProviderEnum, string> = {
   [ModelProviderEnum.Perplexity]: 'Perplexity API',
   [ModelProviderEnum.XAI]: 'xAI API',
   [ModelProviderEnum.OpenRouter]: 'OpenRouter API',
+  [ModelProviderEnum.Modelsell]: 'Modelsell API',
   [ModelProviderEnum.Bedrock]: 'AWS Bedrock',
   [ModelProviderEnum.VercelAIGateway]: 'Vercel AI Gateway',
   [ModelProviderEnum.Custom]: 'Custom Provider',
diff --git a/src/shared/providers/definitions/modelsell.ts b/src/shared/providers/definitions/modelsell.ts
new file mode 100644
index 0000000000..fda52fe526
--- /dev/null
+++ b/src/shared/providers/definitions/modelsell.ts
@@ -0,0 +1,40 @@
+import { ModelProviderEnum, ModelProviderType } from '../../types'
+import { defineProvider } from '../registry'
+import OpenAI from './models/openai'
+
+export const modelsellProvider = defineProvider({
+  id: ModelProviderEnum.Modelsell,
+  name: 'Modelsell',
+  type: ModelProviderType.OpenAI,
+  description: 'Access multiple AI models through the Modelsell OpenAI-compatible API.',
+  urls: {
+    website: 'https://modelsell.com',
+    apiKey: 'https://modelsell.com/console/token',
+    docs: 'https://modelsell.com/docs/api-reference',
+    models: 'https://modelsell.com/v1/models',
+  },
+  defaultSettings: {
+    apiHost: 'https://modelsell.com/v1',
+    models: [],
+  },
+  createModel: (config) => {
+    return new OpenAI(
+      {
+        apiKey: config.effectiveApiKey,
+        apiHost: config.formattedApiHost,
+        model: config.model,
+        dalleStyle: config.settings.dalleStyle || 'vivid',
+        temperature: config.settings.temperature,
+        topP: config.settings.topP,
+        maxOutputTokens: config.settings.maxTokens,
+        injectDefaultMetadata: config.globalSettings.injectDefaultMetadata,
+        useProxy: false,
+        stream: config.settings.stream,
+      },
+      config.dependencies
+    )
+  },
+  getDisplayName: (modelId, providerSettings) => {
+    return `Modelsell (${providerSettings?.models?.find((model) => model.modelId === modelId)?.nickname || modelId})`
+  },
+})
diff --git a/src/shared/providers/index.ts b/src/shared/providers/index.ts
index 06742110e7..357e2534a1 100644
--- a/src/shared/providers/index.ts
+++ b/src/shared/providers/index.ts
@@ -17,6 +17,7 @@ import './definitions/minimax'
 import './definitions/moonshot'
 import './definitions/siliconflow'
 import './definitions/openrouter'
+import './definitions/modelsell'
 import './definitions/ollama'
 import './definitions/lmstudio'
 import './definitions/azure'
diff --git a/src/shared/types/provider.ts b/src/shared/types/provider.ts
index 8f12db4f03..abf46a2820 100644
--- a/src/shared/types/provider.ts
+++ b/src/shared/types/provider.ts
@@ -25,6 +25,7 @@ export enum ModelProviderEnum {
   Perplexity = 'perplexity',
   XAI = 'xAI',
   OpenRouter = 'openrouter',
+  Modelsell = 'modelsell',
   Bedrock = 'bedrock',
   VercelAIGateway = 'vercel-ai-gateway',
   Custom = 'custom',