Add OpenRouterFree API key to environment and adjust max_tokens

example.env

@@ -16,6 +16,7 @@ DEEPINFRA_API_KEY=
 OPENAI_API_KEY=
 GROQ_API_KEY=
 OPENROUTER_API_KEY=
+OPENROUTERFREE_API_KEY=
 OLLAMA_API_KEY=
 NVIDIA_API_KEY=
 PUTER_API_KEY=

g4f/Provider/needs_auth/OpenRouter.py

@@ -10,12 +10,11 @@ class OpenRouter(OpenaiTemplate):
     working = True
     needs_auth = True
     default_model = "openrouter/auto"
-    active_by_default = True
 
 class OpenRouterFree(OpenRouter):
-    parent = "OpenRouter"
     label = "OpenRouter (free)"
-    max_tokens = 5012
+    max_tokens = 4096
+    active_by_default = True
 
     @classmethod
     def get_models(cls, api_key: str = None, **kwargs):