Gemini 4 Argon
Claude Opus 5.5
Muse Wonder
MiMo-V2.6-Pro
Qwen3.8-Max
Kimi K3
GLM-5.3
GPT-5.5
ERNIE 5.1
DeepSeek-V4.1-Flash-20260910
Grok 4.20 Beta
amazon-nova-experimental-chat
Dola Seed 2.0 Pro
Gemma 4 31B
Step 5 Preview
NVIDIA-Nemotron-3-Ultra-550B-A55B
NVIDIA-Nemotron-3-Ultra-550B-A55B is an open-weight model from NVIDIA. It ranks #63 of 351 on the LMArena text leaderboard with a rating of 1445.
LMArena text1445
Rank#63/351
95% interval1438–1452
Votes11.6K
- Developer
- NVIDIA
- Released
- Oct 20, 2026
- Context window
- —
- Price in / out, per 1M tokens
- —
- Weights
- Open · OpenMDW-1.1
- Inputs
- —
- Reasoning
- —
- Tool use
- —
LMArena, by category
| Leaderboard | Rating | Rank | Votes |
|---|---|---|---|
| TextLMArena | 1445 | 63 / 351 | 11.6K |
| CodingLMArena | 1467 | 73 / 346 | 3.2K |
| MathLMArena | 1457 | 64 / 339 | 580 |
| Creative writingLMArena | 1398 | 105 / 349 | 2.2K |
| Instruction followingLMArena | 1418 | 92 / 351 | 3.9K |
| Hard promptsLMArena | 1452 | 69 / 351 | 7.6K |
| Multi-turnLMArena | 1411 | 135 / 349 | 1.8K |
| Long queriesLMArena | 1437 | 82 / 330 | 5.3K |
| ExpertLMArena | 1472 | 59 / 305 | 1.2K |
| Legal and governmentIndustries | 1453 | 64 / 325 | 967 |
| Medicine and healthcareIndustries | 1455 | 61 / 325 | 860 |
| Business and financeIndustries | 1435 | 66 / 344 | 2.3K |
| ChineseLanguages | 1498 | 55 / 328 | 725 |
| SpanishLanguages | 1454 | 50 / 249 | 454 |
| GermanLanguages | 1474 | 26 / 261 | 211 |
| FrenchLanguages | 1473 | 44 / 252 | 463 |
LMArena, CC BY 4.0, as of Oct 22, 2026. Where a model is rated at several effort levels, its best is shown.
Compare NVIDIA-Nemotron-3-Ultra-550B-A55B
NVIDIA
The GPU maker also publishes Nemotron, open models tuned for enterprise and reasoning. Founded 1993, based in Santa Clara. nvidia.com
Questions
Who makes NVIDIA-Nemotron-3-Ultra-550B-A55B?
NVIDIA-Nemotron-3-Ultra-550B-A55B is made by NVIDIA, founded 1993 and based in Santa Clara.
How does NVIDIA-Nemotron-3-Ultra-550B-A55B rank?
#63 of 351 on LMArena’s text leaderboard, rated 1445 (95% interval 1438–1452) from 11,557 votes, as of Oct 22, 2026.
Is NVIDIA-Nemotron-3-Ultra-550B-A55B open source?
NVIDIA-Nemotron-3-Ultra-550B-A55B has open weights under the OpenMDW-1.1 license.