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Anthropic

Claude Sonnet 5

Benchmarks, price, context and versions

Also searched as

Claude-Sonnet-5

Direct answer: Claude Sonnet 5 is a model from Anthropic. 90.5% on GPQA Diamond, per Epoch AI. On OpenRouter, US$ 2.00 per 1 million input tokens and US$ 10.00 per 1 million output tokens.

✓ Good for

  • technical reasoning on science topics (#42 of 198 on GPQA Diamond)
  • calculation and problems with an exact answer (#46 of 186 on OTIS Mock AIME)
  • very long documents or code (a window of 1 million tokens or more, according to OpenRouter)

✕ Not the best for

  • answering short facts with little invention (#60 of 87 on SimpleQA Verified)
  • when the input budget sits at the top of the table (input price in the highest 25% on OpenRouter)

This block follows a rule of this section, using source data: if the model is in the top 25% of the metric, the item goes under "Good for"; if it is in the bottom half, it goes under "Not the best for". The middle band appears in neither. Price and context use OpenRouter; scores use Epoch AI or OpenRouter Benchmarks, in the latest version we checked.

Benchmarks

GPQA Diamond

?what it is
90.5%

highest score on this metric 96.4%

42º / 198 · Epoch AI, latest version we checked

OTIS Mock AIME

?
94.7%

highest score on this metric 100%

46º / 186 · Epoch AI, latest version we checked

FrontierMath (tiers 1 to 3)

?
65.6%

highest score on this metric 95.1%

37º / 86 · Epoch AI, latest version we checked

SimpleQA Verified

?
33.7%

highest score on this metric 94%

60º / 87 · Epoch AI, latest version we checked

GPQA Diamond (OpenRouter)

?
86.9%

highest score on this metric 96.5%

59º / 135 · OpenRouter Benchmarks, latest version we checked

τ-bench Verified (airline)

?
75.4%

highest score on this metric 82%

47º / 131 · OpenRouter Benchmarks, latest version we checked

Key specs

Origin
the US
Family
Claude Sonnet provisional data
Weights?
closed
License
no data
Input US$/1M?
US$ 2.00
Output US$/1M
US$ 10.00
Context?
1,000,000 tokens
Parameters
no data
Input
file, image, text
OpenRouter usage?
0.25%
Downloads (30 days)?
no data
Use cases provisional data
Text Agents
Dates in sources
  • 2026, published, per Epoch AI
  • 2026, listed on OpenRouter

Version history

Dates come from the sources: OpenRouter listing or Hugging Face repo creation, which may differ from the official launch.

FAQ

What is Claude Sonnet 5?

Claude Sonnet 5 is a model from Anthropic, with closed weights, used for text, agents.

How much does Claude Sonnet 5 cost?

On OpenRouter, US$ 2.00 per 1 million input tokens and US$ 10.00 per 1 million output tokens.

What is the context window of Claude Sonnet 5?

1,000,000 tokens, per OpenRouter.

Is Claude Sonnet 5 open source?

No. It is available through API only.

What is Claude Sonnet 5's GPQA Diamond score?

90.5% on GPQA Diamond, per Epoch AI.

Is Claude Sonnet 5 good for coding?

No data: there is no SWE-bench Verified measurement for it in open sources.

Who made Claude Sonnet 5?

It was made by Anthropic, a lab from the US.

provisional data Questions under review: Semrush had no API balance during collection. Answers use source data only.

Models from Anthropic

See lab

Anthropic does not publish weights on Hugging Face: data only via OpenRouter and Epoch AI.

Sources

  • Epoch AI, CC BY 4.0, latest version we checked.
  • OpenRouter, dados públicos da API; exports de benchmarks e rankings em CC BY 4.0, latest version we checked.
  • OpenRouter Benchmarks, CC BY 4.0, latest version we checked.

Dates come from the sources: OpenRouter listing or Hugging Face repo creation, which may differ from the official launch. Family and version were grouped by rule from the name.