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Step 5 Preview
Llama 3.1 Nemotron Ultra 253B v1
Llama 3.1 Nemotron Ultra 253B v1 is an open-weight model from NVIDIA. It ranks #236 of 351 on the LMArena text leaderboard with a rating of 1320.
- Developer
- NVIDIA
- Released
- Apr 16, 2025
- Context window
- —
- Price in / out, per 1M tokens
- —
- Weights
- Open · Nvidia Open Model
- Inputs
- —
- Reasoning
- —
- Tool use
- —
The rating LMArena published at each update since Apr 16, 2025. Ratings move as votes come in and new models join.
LMArena, by category
| Leaderboard | Rating | Rank | Votes |
|---|---|---|---|
| TextLMArena | 1320 | 236 / 351 | 2.5K |
| CodingLMArena | 1312 | 250 / 346 | 367 |
| MathLMArena | 1360 | 207 / 339 | 209 |
| Creative writingLMArena | 1314 | 213 / 349 | 444 |
| Instruction followingLMArena | 1308 | 229 / 351 | 660 |
| Hard promptsLMArena | 1316 | 237 / 351 | 713 |
| Multi-turnLMArena | 1317 | 234 / 349 | 374 |
| Long queriesLMArena | 1299 | 250 / 330 | 321 |
| Business and financeIndustries | 1301 | 240 / 344 | 254 |
LMArena, CC BY 4.0, as of Oct 22, 2026. Where a model is rated at several effort levels, its best is shown.
Compare Llama 3.1 Nemotron Ultra 253B v1
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 Llama 3.1 Nemotron Ultra 253B v1?
Llama 3.1 Nemotron Ultra 253B v1 is made by NVIDIA, founded 1993 and based in Santa Clara.
How does Llama 3.1 Nemotron Ultra 253B v1 rank?
#236 of 351 on LMArena’s text leaderboard, rated 1320 (95% interval 1308–1331) from 2,549 votes, as of Oct 22, 2026.
Is Llama 3.1 Nemotron Ultra 253B v1 open source?
Llama 3.1 Nemotron Ultra 253B v1 has open weights under the Nvidia Open Model license.