Add DeepSeek V4 Pro model option (#189)

* Add DeepSeek V4 Pro model option

Co-authored-by: Codex <codex@openai.com>

* Remove DeepSeek feature tests

Co-authored-by: Codex <codex@openai.com>

---------

Co-authored-by: Codex <codex@openai.com>

agent/core/model_switcher.py

@@ -32,6 +32,7 @@ SUGGESTED_MODELS = [
     {"id": "MiniMaxAI/MiniMax-M2.7", "label": "MiniMax M2.7"},
     {"id": "moonshotai/Kimi-K2.6", "label": "Kimi K2.6"},
     {"id": "zai-org/GLM-5.1", "label": "GLM 5.1"},
+    {"id": "deepseek-ai/DeepSeek-V4-Pro:deepinfra", "label": "DeepSeek V4 Pro"},
 ]
 
 

backend/routes/agent.py

@@ -94,6 +94,12 @@ def _available_models() -> list[dict[str, Any]]:
             "provider": "huggingface",
             "tier": "free",
         },
+        {
+            "id": "deepseek-ai/DeepSeek-V4-Pro:deepinfra",
+            "label": "DeepSeek V4 Pro",
+            "provider": "huggingface",
+            "tier": "free",
+        },
     ]
     return models
 
@@ -121,7 +127,8 @@ async def _require_hf_for_gated_model(request: Request, model_id: str) -> None:
                 "error": "premium_model_restricted",
                 "message": (
                     "Premium models are gated to HF staff. Pick a free model — "
-                    "Kimi K2.6, MiniMax M2.7, or GLM 5.1 — instead."
+                    "Kimi K2.6, MiniMax M2.7, GLM 5.1, or DeepSeek V4 Pro — "
+                    "instead."
                 ),
             },
         )

frontend/src/components/Chat/ChatInput.tsx

@@ -69,6 +69,13 @@ const DEFAULT_MODEL_OPTIONS: ModelOption[] = [
     modelPath: 'zai-org/GLM-5.1',
     avatarUrl: getHfAvatarUrl('zai-org/GLM-5.1'),
   },
+  {
+    id: 'deepseek-v4-pro',
+    name: 'DeepSeek V4 Pro',
+    description: 'DeepInfra',
+    modelPath: 'deepseek-ai/DeepSeek-V4-Pro:deepinfra',
+    avatarUrl: getHfAvatarUrl('deepseek-ai/DeepSeek-V4-Pro'),
+  },
 ];
 
 const findModelByPath = (path: string, options: ModelOption[]): ModelOption | undefined => {

frontend/src/components/ClaudeCapDialog.tsx

@@ -62,8 +62,8 @@ export default function ClaudeCapDialog({
           sx={{ color: 'var(--muted-text)', fontSize: '0.85rem', lineHeight: 1.6 }}
         >
           Opus and GPT-5.5 are expensive to run, so we cap premium models at {cap}{' '}
-          {cap === 1 ? 'session' : 'sessions'} a day. Give Kimi, MiniMax, or GLM a spin
-          instead.
+          {cap === 1 ? 'session' : 'sessions'} a day. Give Kimi, MiniMax, GLM,
+          or DeepSeek a spin instead.
         </DialogContentText>
         <Box
           sx={{