0

Claude Opus 4.8 vs GPT-5.2

Head to head on 26 shared benchmarks, with price, context window, and release dates.

Benchmark scores

59

evals · sort by any column, ⤢ to expand fullscreen

Model
Claude Opus 4.8

Anthropic

66.7%67.0%1835elo80.847.2%92.0%48.7%62.2%80.1%79.3%78.3%67.4%81.4%84.3%89.7%91.8%53.2%85.8%69.9%69.0%54.8%53.5%75.6%58.3%82.7%94.4%--15.5%-80.4%14.5%----1281elo40.0%53.9%13.4%22.5%1890elo-56.9%--10.4%----83.4%---69.2%82.7%60.9%70.9%63.4%
GPT-5.2

OpenAI

65.9%60.0%1699elo71.640.7%71.2%8.0%47.4%78.7%76.1%78.2%61.8%79.8%93.2%83.2%72.0%49.7%84.4%67.1%15.0%49.3%40.4%75.8%31.8%53.5%46.5%51.0%100-100.0%--0.0%16.7%40.6%9.4%------12.93-85.0%79.0%-66.9%24.0%81.4%96.7-18.7%66.7%71.8%----56.3%
2 / 2 models
AttributeClaude Opus 4.8

Anthropic

GPT-5.2

OpenAI

DescriptionClaude Opus 4.8 (Adaptive Reasoning, Max Effort) is an AI model from Anthropic.GPT-5.2 is an AI model from OpenAI.
FamilyClaudeGPT
Params--
Open weights-closed
License-proprietary
Released28 May 202611 Dec 2025
Context1,000,000400,000
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
Modalitiestext, image, filefile, image, text
Providers--
PublisherAnthropicOpenAI
Reported scores

FAQ

Is Claude Opus 4.8 or GPT-5.2 better?
Across the 26 benchmarks both models report on Sophon, Claude Opus 4.8 leads on 24 of them. Which one is "better" depends on the benchmark - the table above shows every shared score.
How do Claude Opus 4.8 and GPT-5.2 compare on GPQA Diamond?
Claude Opus 4.8 scores 92.0% and GPT-5.2 scores 71.2% on GPQA Diamond.
Which is cheaper, Claude Opus 4.8 or GPT-5.2?
GPT-5.2 is cheaper at $14.00 per million output tokens against $25.00 for Claude Opus 4.8 - about 1.8x.
When were Claude Opus 4.8 and GPT-5.2 released?
Claude Opus 4.8 was released 28 May 2026 by Anthropic. GPT-5.2 was released 11 Dec 2025 by OpenAI.

Comparing something else? Build your own side-by-side.