1 files changed, 79 insertions, 0 deletions
diff --git a/backend/openrouter.py b/backend/openrouter.py
new file mode 100644
index 0000000..118fb0b
--- /dev/null
+++ b/backend/openrouter.py
@@ -0,0 +1,79 @@
+"""OpenRouter API client for making LLM requests."""
+
+import httpx
+from typing import List, Dict, Any, Optional
+from .config import OPENROUTER_API_KEY, OPENROUTER_API_URL
+
+
+async def query_model(
+    model: str,
+    messages: List[Dict[str, str]],
+    timeout: float = 120.0
+) -> Optional[Dict[str, Any]]:
+    """
+    Query a single model via OpenRouter API.
+
+    Args:
+        model: OpenRouter model identifier (e.g., "openai/gpt-4o")
+        messages: List of message dicts with 'role' and 'content'
+        timeout: Request timeout in seconds
+
+    Returns:
+        Response dict with 'content' and optional 'reasoning_details', or None if failed
+    """
+    headers = {
+        "Authorization": f"Bearer {OPENROUTER_API_KEY}",
+        "Content-Type": "application/json",
+    }
+
+    payload = {
+        "model": model,
+        "messages": messages,
+    }
+
+    try:
+        async with httpx.AsyncClient(timeout=timeout) as client:
+            response = await client.post(
+                OPENROUTER_API_URL,
+                headers=headers,
+                json=payload
+            )
+            response.raise_for_status()
+
+            data = response.json()
+            message = data['choices'][0]['message']
+
+            return {
+                'content': message.get('content'),
+                'reasoning_details': message.get('reasoning_details')
+            }
+
+    except Exception as e:
+        print(f"Error querying model {model}: {e}")
+        return None
+
+
+async def query_models_parallel(
+    models: List[str],
+    messages: List[Dict[str, str]]
+) -> Dict[str, Optional[Dict[str, Any]]]:
+    """
+    Query multiple models in parallel.
+
+    Args:
+        models: List of OpenRouter model identifiers
+        messages: List of message dicts to send to each model
+
+    Returns:
+        Dict mapping model identifier to response dict (or None if failed)
+    """
+    import asyncio
+
+    # Create tasks for all models
+    tasks = [query_model(model, messages) for model in models]
+
+    # Wait for all to complete
+    responses = await asyncio.gather(*tasks)
+
+    # Map models to their responses
+    return {model: response for model, response in zip(models, responses)}