nemotron-3-ultra-550b-a55b
nemotron-3-ultra-550b-a55b is a preview NVIDIA model, released June 2026.
Open, efficient hybrid Mamba-Transformer MoE with 1M context, excelling in agentic reasoning, coding, planning, tool calling, and more
- Status
- Active
- Released
- June 2026
- Shutdown
- none announced
- Replacement
- —
No deprecation or shutdown date has been announced as of October 15, 2026.
Benchmarks
Scores as each source published themNo comparison. Pick a model to see the difference on each benchmark.
Arena
| Arena | nemotron-3-ultra-550b-a55b | Rank | Date | Source |
|---|---|---|---|---|
TextBy category
| 1426 ±7 | 121 of 415 11,566 votes | Oct 13, 2026 | source |
| Text: Coding | 1473 ±11 | 119 of 410 3,198 votes | Oct 13, 2026 | source |
| Agent | -0.083 ±0.051 | 50 of 54 12,813 sessions | Oct 14, 2026 | source |
Rated as nvidia-nemotron-3-ultra-550b-a55b-nvfp4. Text ratings come from people voting between two anonymous answers; Text is style-controlled, as on arena.ai. Agent is Arena's separate score for real agent sessions, on its own scale. Data: Arena (arena.ai), CC BY 4.0.
Epoch AI
| Benchmark | nemotron-3-ultra-550b-a55b | Setting | Run | Source |
|---|---|---|---|---|
| GPQA Diamond | 85.4% | Aug 10, 2026 | source | |
| OTIS Mock AIME 2024-2025 | 86.7% | Aug 10, 2026 | source |
Run independently by Epoch AI. Data: Epoch AI, Capabilities & benchmarking (epoch.ai/benchmarks), CC BY.
Prices
NVIDIA doesn't sell per-token access to nemotron-3-ultra-550b-a55b. build.nvidia.com is a free trial, and production use is licensed per GPU.
Changelog
Changes we detected on NVIDIA's pagesNo changes recorded yet.
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Last checked · Sources: NVIDIA catalog