Claude Sonnet 4.6

Feb 2026
Claude Sonnet 4.6
Compare in
on
—per task?
$3 / $15per 1M in / outcache $0.30
51 tok/sfirst token in 1 s?
1Mcontext

Rankingin non-thinking mode?

Alternatives?

History

7 versions
65707580Jul 25Oct 25Jan 26Release dateτ²-bench44.54.6
65707580Jul 25Oct 25Jan 26Release dateτ²-bench44.54.6

Benchmarks

all categories
Chat & Knowledge
MLCR-AA20#21
MMLU-Pro · official boardlab87.3
HealthBench Professional length-adjustedlab44.4
GPQA Diamond79.9#116
Coding
Agents & Tool Use
Writing & Language
Vision & Documents

FAQ

How much does Claude Sonnet 4.6 cost?›

$3 per 1M input tokens and $15 per 1M output tokens; cached input $0.30 per 1M.

Is Claude Sonnet 4.6 free to use?›

There is no free API; the cheapest paid price is $3 per 1M input tokens.

How good is Claude Sonnet 4.6, and what is it best at?›

#152 of 334 in Chat & Knowledge, #46 of 132 in Coding, #61 of 133 in Agents & Tool Use, #27 of 195 in Writing & Language, #67 of 124 in Vision & Documents. Strongest at: Knowledge.

Is Claude Sonnet 4.6 better than Nova 2.0 Omni?›

On τ²-bench · AA, Claude Sonnet 4.6 scores 79.5 vs 80.4 — about the same.

How can I use Claude Sonnet 4.6?›

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

What is the context window of Claude Sonnet 4.6?›

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

When was Claude Sonnet 4.6 released? Is there a newer version?›

Released 2026-02-17. It has been superseded by Claude Sonnet 5.

Is Claude Sonnet 4.6 open source?›

No, Claude Sonnet 4.6 is a closed model available through an API. The closest open-weights option here is GLM 5.2.

Can Claude Sonnet 4.6 read images?›

It accepts text and images, PDF files as input.

What is Claude Sonnet 4.6?›

Claude Sonnet 4.6 is a closed language model from Anthropic, released Feb 2026.

What are the best alternatives to Claude Sonnet 4.6?›

GLM 5.2 (cheaper), MiMo v2.5 (better).