Language model
Nemotron 3 Ultra 550B A55B
NVIDIA
- Released
- June 4, 2026
- Data date
- September 8, 2026
Profile
Specifications and access
Published information about this model. Existing estimates are explicitly labeled.
| Specification | Value and source |
|---|---|
| Weights | Open weightsSource |
| Access | APISource |
| Parameters | 550 billionSource |
| Active parameters | 55 billionSource |
| Context window | 1,000,000 tokensSource |
| Maximum output | 128,000 tokensSource |
| License | NVIDIA Open Model LicenseSource |
| Inputs | TextSource |
| Outputs | TextSource |
| Reasoning | YesSource |
| Tool calling | YesSource |
Evidence
Sources and data date
Every statement links to its underlying documentation or leaderboard.
| Type | Evidence and data date |
|---|---|
| Additional source | models.dev catalog (retrieved September 8, 2026) |