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Claude Opus 4.7 vs GPT-5.5

Head to head on 32 shared benchmarks, with price, context window, and release dates.

Benchmark scores

55

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Model
Claude Opus 4.7

Anthropic

66.1%79.0%1311elo1906elo81.851.5%43.8%88.5%33.3%43.6%79.7%82.1%78.3%59.3%77.9%93.1%87.7%73.2%54.9%83.0%70.3%45.3%100.0%54.0%56.1%50.1%75.3%54.5%56.1%67.4%71.0%74.0%---3.21------------91.5-----72.867.2%
GPT-5.5

OpenAI

68.4%86.0%1315elo1844elo78.251.8%51.7%76.8%13.7%46.1%84.7%82.5%81.1%73.0%87.7%96.3%87.7%92.8%49.1%86.9%68.8%45.3%100.0%50.0%51.5%47.3%75.0%49.2%57.4%68.1%69.8%69.3%86.2%54.2%12.9%-36.2%90.0%100.0%34.0%5.7%44.8%24.9%1769elo15.1%51.8%2.1%88.6%-78.7%4.258.6%75.7%83.4%-61.9%
2 / 2 models
AttributeClaude Opus 4.7

Anthropic

GPT-5.5

OpenAI

DescriptionClaude Opus 4.7 is an AI model from Anthropic.GPT-5.5 is an AI model from OpenAI.
FamilyClaudeGPT
Params--
Open weightsclosedclosed
Licenseproprietaryproprietary
Released16 Apr 202623 Apr 2026
Context1,000,0001,050,000
Input $/1M$5.00$5.00
Output $/1M$25.00$30.00
Cache read $/1M$0.500$0.500
Cache write $/1M$6.250-
Speed0 tok/s0 tok/s
Latency0.00 s0.00 s
Modalitiestext, image, filefile, image, text
Providers--
PublisherAnthropicOpenAI
Reported scores

FAQ

Is Claude Opus 4.7 or GPT-5.5 better?
Across the 32 benchmarks both models report on Sophon, GPT-5.5 leads on 17 of them. Which one is "better" depends on the benchmark - the table above shows every shared score.
How do Claude Opus 4.7 and GPT-5.5 compare on GPQA Diamond?
Claude Opus 4.7 scores 88.5% and GPT-5.5 scores 76.8% on GPQA Diamond.
Which is cheaper, Claude Opus 4.7 or GPT-5.5?
Claude Opus 4.7 is cheaper at $25.00 per million output tokens against $30.00 for GPT-5.5 - about 1.2x.
When were Claude Opus 4.7 and GPT-5.5 released?
Claude Opus 4.7 was released 16 Apr 2026 by Anthropic. GPT-5.5 was released 23 Apr 2026 by OpenAI.

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