add horizon beta

app.py

@@ -461,6 +461,11 @@ AVAILABLE_MODELS = [
         "id": "openrouter/horizon-alpha",
         "description": "OpenRouter Horizon Alpha model for advanced code generation and multimodal tasks"
     },
+    {
+        "name": "Horizon Beta",
+        "id": "openrouter/horizon-beta",
+        "description": "OpenRouter Horizon Beta model for advanced code generation and multimodal tasks with vision support"
+    },
     {
         "name": "StepFun Step-3",
         "id": "step-3",
@@ -571,6 +576,16 @@ def get_inference_client(model_id, provider="auto"):
                 "X-Title": os.getenv("OPENROUTER_SITE_NAME", "AnyCoder")
             }
         )
+    elif model_id == "openrouter/horizon-beta":
+        # Use OpenRouter client for Horizon Beta model
+        return OpenAI(
+            api_key=os.getenv("OPENROUTER_API_KEY"),
+            base_url="https://openrouter.ai/api/v1",
+            default_headers={
+                "HTTP-Referer": os.getenv("OPENROUTER_SITE_URL", "https://huggingface.co/spaces/akhaliq/anycoder"),
+                "X-Title": os.getenv("OPENROUTER_SITE_NAME", "AnyCoder")
+            }
+        )
     elif model_id == "step-3":
         # Use StepFun API client for Step-3 model
         return OpenAI(