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Claude Opus 4.5 vs GPT-5.2

Head to head on 35 shared benchmarks, with price, context window, and release dates.

Benchmark scores

49

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Model
Claude Opus 4.5

Anthropic

62.7%16.7%61.3%35.6%6.1%1683elo73.120.7%81.0%12.1313.2%83.8%43.0%83.5%78.1%79.7%74.4%62.5%81.3%90.4%80.1%73.8%45.2%83.2%88.9%68.7%36.0%45.0%47.0%70.7%79.2%74.3%40.9%20.6%86.3%----84.7%--100.0%37.4--77.5%45.361.862.2%
GPT-5.2

OpenAI

51.0%16.7%65.9%40.6%9.4%1699elo71.640.7%71.2%12.938.0%85.0%47.4%79.0%78.7%76.1%78.2%61.8%79.8%93.2%83.2%66.9%49.7%84.4%81.4%67.1%15.0%49.3%40.4%66.7%71.8%75.8%31.8%53.5%46.5%100100.0%0.0%60.0%-24.0%72.0%--96.718.7%---56.3%
2 / 2 models
AttributeClaude Opus 4.5

Anthropic

GPT-5.2

OpenAI

DescriptionClaude Opus 4.5 is an AI model from Anthropic.GPT-5.2 is an AI model from OpenAI.
FamilyClaudeGPT
Params--
Open weightsclosedclosed
Licenseproprietaryproprietary
Released24 Nov 202511 Dec 2025
Context200,000400,000
Input $/1M$5.00$1.75
Output $/1M$25.00$14.00
Cache read $/1M$0.500$0.175
Cache write $/1M$6.250-
Speed0 tok/s0 tok/s
Latency0.00 s0.00 s
Modalitiesfile, image, textfile, image, text
Providers--
PublisherAnthropicOpenAI
Reported scores

FAQ

Is Claude Opus 4.5 or GPT-5.2 better?
Across the 35 benchmarks both models report on Sophon, Claude Opus 4.5 and GPT-5.2 are level, winning 17 each. Which one is "better" depends on the benchmark - the table above shows every shared score.
How do Claude Opus 4.5 and GPT-5.2 compare on GPQA Diamond?
Claude Opus 4.5 scores 81.0% and GPT-5.2 scores 71.2% on GPQA Diamond.
Which is cheaper, Claude Opus 4.5 or GPT-5.2?
GPT-5.2 is cheaper at $14.00 per million output tokens against $25.00 for Claude Opus 4.5 - about 1.8x.
When were Claude Opus 4.5 and GPT-5.2 released?
Claude Opus 4.5 was released 24 Nov 2025 by Anthropic. GPT-5.2 was released 11 Dec 2025 by OpenAI.

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