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Anthropic

Claude Opus 4

Benchmarks, price, context and versions

Direct answer: Claude Opus 4 is a model from Anthropic. 76.3% on GPQA Diamond, per Epoch AI.

✓ Good for

  • Not enough data in the open sources this section uses to build this block.

✕ Not the best for

  • calculation and problems with an exact answer (#112 of 186 on OTIS Mock AIME)
  • fixing bugs in real code (#24 of 32 on SWE-bench Verified)

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
76.3%

highest score on this metric 96.4%

99º / 198 · Epoch AI, latest version we checked

OTIS Mock AIME

?
64.4%

highest score on this metric 100%

112º / 186 · Epoch AI, latest version we checked

SWE-bench Verified

?
70.7%

highest score on this metric 83.5%

24º / 32 · Epoch AI, latest version we checked

Key specs

Origin
the US
Family
Claude Opus provisional data
Weights?
closed
License
no data
Input US$/1M?
no data
Output US$/1M
no data
Context?
no data
Parameters
no data
Input
no data
OpenRouter usage?
no data
Downloads (30 days)?
no data
Use cases provisional data
Code
Dates in sources
  • 2025, published, per Epoch AI

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 Opus 4?

Claude Opus 4 is a model from Anthropic, with closed weights, used for code.

How much does Claude Opus 4 cost?

No data in open sources.

What is the context window of Claude Opus 4?

No data in open sources.

Is Claude Opus 4 open source?

No. It is available through API only.

What is Claude Opus 4's GPQA Diamond score?

76.3% on GPQA Diamond, per Epoch AI.

Is Claude Opus 4 good for coding?

It scores 70.7% on SWE-bench Verified, per Epoch AI.

Who made Claude Opus 4?

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.

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.