Claude Sonnet 4.6

Proprietary

Context

Benchmarks

About Claude Sonnet 4.6

Claude Sonnet 4.6 is an AI model developed by Anthropic, released in 2026, made available as a proprietary (API-only) model. Claude Sonnet 4.6 is Anthropic's balanced model released February 17, 2026. Priced at $3/$15 per million tokens with a 1.

On this page you'll find Claude Sonnet 4.6's full specifications, including a context window of 1M tokens, 2 benchmark results. Review provider pricing and benchmark scores below, or compare Claude Sonnet 4.6 head-to-head with other AI models.

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Claude Sonnet 4.6 benchmark scores▶

Compare on the benchmark table →

Benchmark	Category	Score	Variant
SWE-bench Verified	code	78.2%	agentic
GPQA Diamond	reasoning	81.4%	extended-thinking

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Frequently asked questions

What is Claude Sonnet 4.6? ▶

Claude Sonnet 4.6 is Anthropic's balanced model released February 17, 2026. Priced at $3/$15 per million tokens with a 1 It is tracked on GenAIList with its specifications, benchmark scores and provider pricing.

Who created Claude Sonnet 4.6? ▶

Claude Sonnet 4.6 was developed by Anthropic and released in 2026.

Is Claude Sonnet 4.6 open source or proprietary? ▶

Claude Sonnet 4.6 is a proprietary model. It is accessed through an API rather than by downloading the weights.

What is Claude Sonnet 4.6's context window? ▶

Claude Sonnet 4.6 supports a context window of 1M tokens.

How much does Claude Sonnet 4.6 cost? ▶

Pricing for Claude Sonnet 4.6 depends on the provider. See the providers table on this page for the latest API rates.

How does Claude Sonnet 4.6 perform on benchmarks? ▶

Claude Sonnet 4.6 is benchmarked across 2 evaluations on GenAIList, including SWE-bench Verified (78.2%). See the full benchmark table below and compare it with other models.