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Step 5 Preview
Olmo 3.1 32B Think
Olmo 3.1 32B Think is an open-weight model from Ai2. It ranks #282 of 351 on the LMArena text leaderboard with a rating of 1271.
LMArena text1271+1 in 30 days
Rank#282/351
95% interval1264–1279
Votes8.3K
- Developer
- Ai2
- Released
- Jan 27, 2026
- Context window
- —
- Price in / out, per 1M tokens
- —
- Weights
- Open · Apache 2.0
- Inputs
- —
- Reasoning
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- Tool use
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LatestOlmo 3.1 32B Think 1271
The rating LMArena published at each update since Jan 27, 2026. Ratings move as votes come in and new models join.
LMArena, by category
| Leaderboard | Rating | Rank | Votes |
|---|---|---|---|
| TextLMArena | 1271 | 282 / 351 | 8.3K |
| CodingLMArena | 1291 | 266 / 346 | 1.6K |
| MathLMArena | 1305 | 237 / 339 | 478 |
| Creative writingLMArena | 1227 | 294 / 349 | 1.4K |
| Instruction followingLMArena | 1246 | 283 / 351 | 2.2K |
| Hard promptsLMArena | 1272 | 266 / 351 | 4.4K |
| Multi-turnLMArena | 1250 | 294 / 349 | 1.2K |
| Long queriesLMArena | 1271 | 275 / 330 | 2K |
| ExpertLMArena | 1295 | 236 / 305 | 556 |
| Legal and governmentIndustries | 1287 | 263 / 325 | 620 |
| Medicine and healthcareIndustries | 1260 | 269 / 325 | 589 |
| Business and financeIndustries | 1253 | 273 / 344 | 1.5K |
| ChineseLanguages | 1241 | 281 / 328 | 730 |
| SpanishLanguages | 1289 | 224 / 249 | 199 |
| GermanLanguages | 1262 | 220 / 261 | 165 |
| FrenchLanguages | 1261 | 243 / 252 | 211 |
LMArena, CC BY 4.0, as of Oct 22, 2026. Where a model is rated at several effort levels, its best is shown.
Compare Olmo 3.1 32B Think
Ai2
The Allen Institute for AI builds OLMo, fully open models with open data and training code. Founded 2014, based in Seattle. allenai.org
Questions
Who makes Olmo 3.1 32B Think?
Olmo 3.1 32B Think is made by Ai2, founded 2014 and based in Seattle.
How does Olmo 3.1 32B Think rank?
#282 of 351 on LMArena’s text leaderboard, rated 1271 (95% interval 1264–1279) from 8,299 votes, as of Oct 22, 2026.
Is Olmo 3.1 32B Think open source?
Olmo 3.1 32B Think has open weights under the Apache 2.0 license.