Nemotron 3 Ultra (free)
NVIDIA🇺🇸
nvidia/nemotron-3-ultra-550b-a55b:freeNemotron 3 Ultra is NVIDIA's flagship open-weight model in the Nemotron 3 family, a 550B-parameter mixture-of-experts model with 55B active parameters optimized for complex, long-running agent workflows. This is the free-tier variant of the same model.
Cost rate
Free
Context
1M
Released
Jun 4, 2026
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ReasoningTool callingStructured outputs
Best at
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Performance
Median latency and throughput measured across recent requests.
Throughput167 tok/s
Latency