Claude Sonnet 5

Jun 2026
Claude Sonnet 5
Compare in
on
$1.79per task?
$2 / $10per 1M in / outcache $0.20
71 tok/sfirst token in 7.7 s?
1Mcontext

Rankingat high effort?

Full ranking →
1Muse Wonder Full32.92GPT-5.6 Sol32.33Opus 5.531.73GPT-6 Astra31.73GPT-6.1 Sol31.7
···
42GLM 5.3 Flash15.444Sonnet 515.144Muse Spark 1.115.1

Strong at

S
Science#27 of 312
A
Reasoning#58 of 334Knowledge#78 of 318
B
Coding#44 of 132Agents & work tasks#47 of 175Long context#80 of 273Vision#36 of 124

Alternatives?

ModelScoreCostPer taskWhat changes
CheaperGPT-6.1 Solxhigh×2.1-78%$0.39Remove unsupported parameters+5BetterGPT-6 Lunaxhigh+15%-98%$0.042Function calling only with none · Chat Completions+3OpenMiMo v2.6 Prothinking+75%-93%$0.13Pass back reasoning_content+3Lower effortSame modelmedium-43%-44%$1.00CheaperGPT-6 Solmax×2-42%$1.04

History

7 versions
0102030Jul 25Jan 26Jul 26Release dateCritPt44.54.655.5
0102030Jul 25Jan 26Jul 26Release dateCritPt44.54.655.5

Benchmarks

in Chat & Knowledge
AA Intelligence Index 4.3.231.7#52
AA Omniscience Index-3.7#78
AA Omniscience · Accuracy37.4#55
AA Omniscience · Hallucination Rate65.7#119
Humanity's Last Exam35.7#58
AA-LCR (long context) 1.176.7#80
CritPt (physics)15.1#44
GDP.pdf · AA all-pass9.4#62
Arena Text · overall1,461#38
Arena Text · overall · full cohort1,442.1#47
Arena Text · Chinese1,477.6#57
Arena Text · English1,450.1#48
Arena Text · French1,463.8#40
Arena Text · German1,441.9#44
Arena Text · instruction following1,452.4#36
Arena Text · Japanese1,424.8#31
Arena Text · Korean1,413#34
Arena Text · non-English1,431.2#45
Arena Text · Polish1,426.4#52
Arena Text · Russian1,449.7#36
Arena Text · Spanish1,437.2#57
HealthBench Professional length-adjustedlab57.8

FAQ

How much does Claude Sonnet 5 cost?›

$2 per 1M input tokens and $10 per 1M output tokens; cached input $0.20 per 1M. A typical benchmark task costs about $1.79 at high effort.

Is Claude Sonnet 5 free to use?›

There is no free API; the cheapest paid price is $2 per 1M input tokens.

How good is Claude Sonnet 5, and what is it best at?›

#58 of 334 in Chat & Knowledge, #44 of 132 in Coding, #48 of 133 in Agents & Tool Use, #40 of 195 in Writing & Language, #36 of 124 in Vision & Documents. Strongest at: Reasoning, Science, Knowledge.

Is Claude Sonnet 5 better than Claude Sonnet 4.6?›

On CritPt (physics), Claude Sonnet 5 scores 16.9 vs 3.1 — higher. It is 28% cheaper per task.

How can I use Claude Sonnet 5?›

Through the API of Amazon Bedrock, Anthropic, Azure, Claude Platform on AWS, DeepInfra and 1 more.

What is the context window of Claude Sonnet 5?›

1M tokens, with up to 128K output tokens.

When was Claude Sonnet 5 released? Is there a newer version?›

Released 2026-06-29. It has been superseded by Claude Sonnet 5.5.

Is Claude Sonnet 5 open source?›

No, Claude Sonnet 5 is a closed model available through an API. The closest open-weights option here is MiMo v2.6 Pro.

Can Claude Sonnet 5 read images?›

It accepts text and images, PDF files as input.

What is Claude Sonnet 5?›

Claude Sonnet 5 is a closed language model from Anthropic, released Jun 2026, the successor to Claude Sonnet 4.6.

What are the best alternatives to Claude Sonnet 5?›

GPT-6.1 Sol (cheaper), GPT-6 Luna (better), MiMo v2.6 Pro (open weights).