Anthropic

Claude 3 Sonnet

Claude 3 Sonnet is a proprietary model from Anthropic. It ranks #313 of 351 on the LMArena text leaderboard with a rating of 1218.

LMArena text1218+0 in 30 days
Rank#313/351
95% interval1214–1222
Votes109.3K
Developer
Anthropic
Released
Mar 7, 2024
Context window
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Price in / out, per 1M tokens
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Weights
Proprietary
Inputs
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Reasoning
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Tool use
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Claude 3 Sonnet, LMArena text rating over time
11701188120512231240Mar 24Nov 24Jun 25Feb 26Oct 26
LatestClaude 3 Sonnet 1218

The rating LMArena published at each update since Mar 7, 2024. Ratings move as votes come in and new models join.

LMArena, by category

LeaderboardRatingRankVotes
TextLMArena1218313 / 351109.3K
CodingLMArena1223308 / 34618.9K
MathLMArena1213304 / 33913.8K
Creative writingLMArena1186317 / 34915.6K
Instruction followingLMArena1199311 / 35138.8K
Hard promptsLMArena1197314 / 35130.7K
Multi-turnLMArena1227299 / 34917.1K
Long queriesLMArena1211312 / 33011.9K
ExpertLMArena1173301 / 3055.6K
Legal and governmentIndustries1214313 / 3256.1K
Medicine and healthcareIndustries1188307 / 3255.9K
Business and financeIndustries1174320 / 34411.9K
ChineseLanguages1189315 / 32815.6K
SpanishLanguages1204260 / 2491.4K
GermanLanguages1204254 / 2613.1K
FrenchLanguages1229253 / 2521.8K
JapaneseLanguages1131242 / 2361.8K
VisionLMArena984154 / 14612.3K

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 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 Sonnet?

Claude 3 Sonnet is made by Anthropic, founded 2021 and based in San Francisco.

How does Claude 3 Sonnet rank?

#313 of 351 on LMArena’s text leaderboard, rated 1218 (95% interval 1214–1222) from 109,284 votes, as of Oct 22, 2026.

Is Claude 3 Sonnet open source?

No. Claude 3 Sonnet is proprietary and served through its provider’s API.

Sources

Every number on this page comes from these sources; models without a published number show none. Download the data. Cite as “Nexus Explorer, nexus.inc/models”.