Gemini 4 Argon
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
NVIDIA-Nemotron-3-Ultra-550B-A55B
Gemma 4 31B
Step 5 Preview
Claude 3.5 Sonnet
Claude 3.5 Sonnet is a proprietary model from Anthropic. It ranks #253 of 351 on the LMArena text leaderboard with a rating of 1298.
- Developer
- Anthropic
- Released
- Jun 23, 2024
- Context window
- —
- Price in / out, per 1M tokens
- —
- Weights
- Proprietary
- Inputs
- —
- Reasoning
- —
- Tool use
- —
The rating LMArena published at each update since Jun 23, 2024. Ratings move as votes come in and new models join.
Benchmarks
| Benchmark | Score bar | Accuracy | Rank | Cost / test |
|---|---|---|---|---|
| LiveCodeBenchCoding | 49.63% | 118 / 143 | $3 / $15 | |
| MedQAMedicine | 83.19% | 62 / 92 | $3 / $15 | |
| GPQA DiamondReasoning | 59.34% | 112 / 138 | $3 / $15 | |
| MMLU-ProReasoning | 78.40% | 105 / 138 | $3 / $15 | |
| AIMEReasoning | 10.00% | 89 / 96 | $3 / $15 | |
| MMMUReasoning | 68.80% | 72 / 93 | $3 / $15 |
Vals AI, as of Oct 24, 2026.
LMArena, by category
| Leaderboard | Rating | Rank | Votes |
|---|---|---|---|
| TextLMArena | 1298 | 253 / 351 | 87.8K |
| CodingLMArena | 1342 | 232 / 346 | 14.9K |
| MathLMArena | 1307 | 236 / 339 | 10K |
| Creative writingLMArena | 1292 | 228 / 349 | 11.7K |
| Instruction followingLMArena | 1297 | 241 / 351 | 31.2K |
| Hard promptsLMArena | 1305 | 245 / 351 | 27.1K |
| Multi-turnLMArena | 1326 | 227 / 349 | 15.9K |
| Long queriesLMArena | 1311 | 240 / 330 | 13.8K |
| ExpertLMArena | 1265 | 248 / 305 | 5K |
| Legal and governmentIndustries | 1277 | 274 / 325 | 5.5K |
| Medicine and healthcareIndustries | 1257 | 275 / 325 | 4.5K |
| Business and financeIndustries | 1255 | 269 / 344 | 11.3K |
| ChineseLanguages | 1272 | 262 / 328 | 6.9K |
| SpanishLanguages | 1290 | 223 / 249 | 1.1K |
| GermanLanguages | 1298 | 200 / 261 | 2K |
| FrenchLanguages | 1305 | 214 / 252 | 848 |
| JapaneseLanguages | 1234 | 194 / 236 | 2K |
| VisionLMArena | 1126 | 126 / 146 | 10.4K |
LMArena, CC BY 4.0, as of Oct 22, 2026. Where a model is rated at several effort levels, its best is shown (Claude 3.5 Sonnet (20241022), Claude 3.5 Sonnet (20240620)).
Compare Claude 3.5 Sonnet
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 3.5 Sonnet?
Claude 3.5 Sonnet is made by Anthropic, founded 2021 and based in San Francisco.
How does Claude 3.5 Sonnet rank?
#253 of 351 on LMArena’s text leaderboard, rated 1298 (95% interval 1295–1301) from 87,771 votes, as of Oct 22, 2026.
Is Claude 3.5 Sonnet open source?
No. Claude 3.5 Sonnet is proprietary and served through its provider’s API.