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Claude 3 Opus
Claude 3 Opus is a proprietary model from Anthropic. It ranks #291 of 351 on the LMArena text leaderboard with a rating of 1262.
- Developer
- Anthropic
- Released
- Mar 7, 2024
- Context window
- —
- Price in / out, per 1M tokens
- —
- Weights
- Proprietary
- Inputs
- —
- Reasoning
- —
- Tool use
- —
The rating LMArena published at each update since Mar 7, 2024. Ratings move as votes come in and new models join.
LMArena, by category
| Leaderboard | Rating | Rank | Votes |
|---|---|---|---|
| TextLMArena | 1262 | 291 / 351 | 194.9K |
| CodingLMArena | 1264 | 289 / 346 | 33.7K |
| MathLMArena | 1273 | 262 / 339 | 25.8K |
| Creative writingLMArena | 1235 | 287 / 349 | 28.4K |
| Instruction followingLMArena | 1248 | 280 / 351 | 72K |
| Hard promptsLMArena | 1245 | 292 / 351 | 55.1K |
| Multi-turnLMArena | 1275 | 271 / 349 | 31.1K |
| Long queriesLMArena | 1259 | 283 / 330 | 23.4K |
| ExpertLMArena | 1223 | 279 / 305 | 10.4K |
| Legal and governmentIndustries | 1265 | 285 / 325 | 11.1K |
| Medicine and healthcareIndustries | 1231 | 285 / 325 | 10.3K |
| Business and financeIndustries | 1222 | 296 / 344 | 21.7K |
| ChineseLanguages | 1248 | 274 / 328 | 23.3K |
| SpanishLanguages | 1246 | 248 / 249 | 2.6K |
| GermanLanguages | 1258 | 224 / 261 | 5.7K |
| FrenchLanguages | 1275 | 233 / 252 | 2.8K |
| JapaneseLanguages | 1204 | 213 / 236 | 3.7K |
| VisionLMArena | 1023 | 144 / 146 | 15.6K |
LMArena, CC BY 4.0, as of Oct 22, 2026. Where a model is rated at several effort levels, its best is shown.
Compare Claude 3 Opus
Anthropic
An AI safety and research company that builds the Claude family of models, known for coding, long context and careful behaviour. Founded 2021, based in San Francisco. anthropic.com
Questions
Who makes Claude 3 Opus?
Claude 3 Opus is made by Anthropic, founded 2021 and based in San Francisco.
How does Claude 3 Opus rank?
#291 of 351 on LMArena’s text leaderboard, rated 1262 (95% interval 1259–1265) from 194,909 votes, as of Oct 22, 2026.
Is Claude 3 Opus open source?
No. Claude 3 Opus is proprietary and served through its provider’s API.