Anthropic

Claude 3.5 Haiku

Claude 3.5 Haiku is a proprietary model from Anthropic. It ranks #295 of 351 on the LMArena text leaderboard with a rating of 1255.

LMArena text1255+0 in 30 days
Rank#295/351
95% interval1252–1259
Votes69.1K
Developer
Anthropic
Released
Dec 10, 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 3.5 Haiku, LMArena text rating over time
12201233124512581270Dec 24May 25Nov 25May 26Oct 26
LatestClaude 3.5 Haiku 1255

The rating LMArena published at each update since Dec 10, 2024. Ratings move as votes come in and new models join.

Benchmarks

BenchmarkScore barAccuracyRankCost / test
LiveCodeBenchCoding41.92%128 / 143$0.8 / $4
GPQA DiamondReasoning37.88%132 / 138$0.8 / $4
MMLU-ProReasoning64.12%132 / 138$0.8 / $4
AIMEReasoning3.33%94 / 96$0.8 / $4

Vals AI, as of Oct 24, 2026.

LMArena, by category

LeaderboardRatingRankVotes
TextLMArena1255295 / 35169.1K
CodingLMArena1286272 / 34611.1K
MathLMArena1244285 / 3396.3K
Creative writingLMArena1232290 / 3499.8K
Instruction followingLMArena1241287 / 35121.9K
Hard promptsLMArena1251288 / 35123.5K
Multi-turnLMArena1265282 / 34911.2K
Long queriesLMArena1260281 / 33011K
ExpertLMArena1208288 / 3053.5K
Legal and governmentIndustries1259288 / 3254.2K
Medicine and healthcareIndustries1227287 / 3253.6K
Business and financeIndustries1223293 / 3449.1K
ChineseLanguages1229290 / 3284.7K
SpanishLanguages1261237 / 249963
GermanLanguages1237241 / 2611.7K
FrenchLanguages1264240 / 252838
JapaneseLanguages1175224 / 2361.5K
VisionLMArena1093132 / 1461.4K

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 3.5 Haiku

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 Haiku?

Claude 3.5 Haiku is made by Anthropic, founded 2021 and based in San Francisco.

How does Claude 3.5 Haiku rank?

#295 of 351 on LMArena’s text leaderboard, rated 1255 (95% interval 1252–1259) from 69,055 votes, as of Oct 22, 2026.

Is Claude 3.5 Haiku open source?

No. Claude 3.5 Haiku 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”.