Back to Modelsby NVIDIA
N
Cosmos 3 Nano Reasoner
CosmosVision language model that excels in understanding the physical world using structured reasoning on videos or images.
Free EndpointDownloadableJun 1, 2026open license
Specifications
Context Length
131K
131,072 tokens
Input Price
Free
per 1M tokens
Output Price
Free
per 1M tokens
Modalities
3
text→text, image+text→text, video→text
Capabilities
text generationchatvisionreasoning
Tags
video-understandingreasoningphysics-aware
API Usage
1Router is fully OpenAI-compatible. Just set the base URL and use this model ID:
nvidia/cosmos3-nano-reasonercURL
curl https://your-site.example/api/v1/chat/completions \
-H "Authorization: Bearer $ROUTER_USER_API_KEY" \
-H "Content-Type: application/json" \
-d '{
"model": "nvidia/cosmos3-nano-reasoner",
"messages": [{"role": "user", "content": "Hello!"}]
}'