NVIDIA: Nemotron 3 Ultra
nvidia/nemotron-3-ultra-550b-a55b
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...
Modalities
In / Out Price
$0.50 / $2.20 per 1M
Context
262K
Released
Jun 4, 2026
Knowledge Cutoff
—
Uptime
Share of successful requests per carrier, measured over the last 5 minutes, 30 minutes and day. When one carrier dips, the router fails over to the next.
Carriers
4
Best carrier, 30m
100.00%
Healthy now
4 / 4
| Provider | Status | Last 5m | Last 30m | Last day |
|---|---|---|---|---|
 DeepInfra | Operational | 100.00% | 100.00% | 100.00% |
 BaseTen | Operational | 100.00% | 100.00% | 100.00% |
| BaseTen | Operational | 100.00% | 100.00% | 100.00% |
 Venice | Operational | 100.00% | 100.00% | 93.99% |