Claude Sonnet 5

Jun 2026
Claude Sonnet 5
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$1.00per task?
$2 / $10per 1M in / outcache $0.20
66 tok/sfirst token in 1.7 s?
1Mcontext

Alternatives?

History

7 versions
384042444648Apr 26Jul 26Oct 26Release dateVals Legal Research Bench4.655.5
384042444648Apr 26Jul 26Oct 26Release dateVals Legal Research Bench4.655.5

Benchmarks

in Chat & Knowledge
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 $1.00 at medium 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?›

#80 of 334 in Chat & Knowledge, #48 of 132 in Coding, #50 of 133 in Agents & Tool Use, #40 of 195 in Writing & Language, #36 of 124 in Vision & Documents. Strongest at: Reasoning, Science.

Is Claude Sonnet 5 better than Claude Sonnet 4.6?›

On Vals Legal Research Bench, Claude Sonnet 5 scores 41.8 vs 38.5 — higher.

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 It has been superseded by Claude Sonnet 5.5.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 GLM 5.3.

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?›

Muse Spark 1.3 (cheaper), GLM 5.3 (open weights).