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Claude Sonnet 4.6 vs GPT-5

Head to head on 16 shared benchmarks, with price, context window, and release dates.

Benchmark scores

81

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Model
Claude Sonnet 4.6

Anthropic

65.3%1805elo79.932.4%79.7%11.2%42.4%92.2%67.7%45.0%46.6%44.1%77.1%42.4%51.5%78.9%--87.1%---47.2%-47.6%----1.3578.0%---1207elo51.0%-------78.4%80.0%76.1%63.9%77.7%86.5%86.4%--------------89.3---72.1%----76.3--50.6%60.6%---62.8%
GPT-5

OpenAI

61.1%1623elo72.832.4%68.6%6.6%45.0%83.4%65.5%18.0%43.7%37.8%73.4%12.9%20.1%0.0%46.7%91.1%-88.0%94.6%48.3%-0.0%-0.150.0%68.1%4.58--57.7%80.0%80.0%--91.7%0.0%88.9%83.3%100.0%48.9%58.2%-------54.3%37.5%0.521.62100.0%86.1%0.0%92.7%92.7%49.6%83.7%93.3%10.0%82.0%-0.0%60.0%0.26-0.0%74.9%74.4%2.34-87.5%0.86--54.8%90.0%90.0%56.7%
2 / 2 models
AttributeClaude Sonnet 4.6

Anthropic

GPT-5

OpenAI

DescriptionClaude Sonnet 4.6 is an AI model from Anthropic.OpenAI's August 2025 unified frontier model that auto-routes between a fast model and a deeper "thinking" variant.
FamilyClaudeGPT 5
Params-Undisclosed (closed)
Open weightsclosedclosed
LicenseproprietaryProprietary
Released17 Feb 20267 Aug 2025
Context1,000,000400,000
Input $/1M$3.00-
Output $/1M$15.00-
Cache read $/1M$0.300$0.125
Cache write $/1M$3.750-
Speed45 tok/s0 tok/s
Latency1.12 s0.00 s
Modalitiestext, image, filetext, image, file
Providers-openai
PublisherAnthropicOpenAI
Reported scores

FAQ

Is Claude Sonnet 4.6 or GPT-5 better?
Across the 16 benchmarks both models report on Sophon, Claude Sonnet 4.6 leads on 14 of them. Which one is "better" depends on the benchmark - the table above shows every shared score.
How do Claude Sonnet 4.6 and GPT-5 compare on GPQA Diamond?
Claude Sonnet 4.6 scores 79.7% and GPT-5 scores 68.6% on GPQA Diamond.
When were Claude Sonnet 4.6 and GPT-5 released?
Claude Sonnet 4.6 was released 17 Feb 2026 by Anthropic. GPT-5 was released 7 Aug 2025 by OpenAI.

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