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NVIDIA: Nemotron 3 UltraNEW
NVIDIA Nemotron 3 Ultra is an open frontier-reasoning and orchestration model from NVIDIA, with 55B active parameters out of 550B total (MoE). Built on a hybrid Transformer-Mamba mixture-of-experts architecture, it...
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Run this model with a pre-filled form — the same billed path as the API.
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This demo page does not include the full memory features of the client. For the complete experience, please use the client or the CLI.
Rate card
| input | 150 credits 1M tokens |
| output | 600 credits 1M tokens |
Flat price per run — it does not change with duration.
Quick start
POST/v1/jobs/createTask
curl -X POST https://modelfold.ai/v1/jobs/createTask \
-H "Authorization: Bearer $MODELFOLD_API_KEY" \
-H "Content-Type: application/json" \
-d '{"model":"nemotron-3-ultra-550b-a55b","input":{"prompt":"..."}}'