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Claude Opus 4.8 vs GPT-5 Mini

Head to head on 24 shared benchmarks, with price, context window, and release dates.

Benchmark scores

83

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Model
Claude Opus 4.8

Anthropic

66.7%1835elo80.847.2%92.0%48.7%62.2%80.1%79.3%78.3%67.4%81.4%84.3%89.7%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%----67.0%-----1281elo40.0%-53.9%-13.4%22.5%1890elo---56.9%--10.4%----91.8%--83.4%----69.2%82.7%-----60.9%70.9%----63.4%
GPT-5 Mini

OpenAI

60.2%1310elo56.227.2%68.7%5.1%45.6%69.1%68.2%55.2%65.3%75.5%82.2%68.3%43.0%80.6%66.9%9.0%43.0%36.9%75.2%14.4%14.2%31.9%0.0%46.7%0.0%-1.130.0%--0.15-20.0%25.0%40.0%1.7-100.0%18.1%2.8%100.0%66.7%--0.0%-88.3%---60.0%100.0%90.0%-47.2%80.0%-54.5%0.0%1.541.54-80.0%77.5%-16.8%4.9539.7%59.8%--0.0%9.5%0.0%86.1%0.49--39.21272.1186.0%86.0%47.9%
2 / 2 models
AttributeClaude Opus 4.8

Anthropic

GPT-5 Mini

OpenAI

DescriptionClaude Opus 4.8 (Adaptive Reasoning, Max Effort) is an AI model from Anthropic.GPT-5 mini is an AI model from OpenAI.
FamilyClaudeGPT
Params--
Open weights-closed
License-proprietary
Released28 May 20267 Aug 2025
Context1,000,000400,000
Input $/1M$5.00$0.25
Output $/1M$25.00$2.00
Cache read $/1M$0.500$0.025
Cache write $/1M$6.250-
Speed0 tok/s0 tok/s
Latency0.00 s0.00 s
Modalitiestext, image, filetext, image, file
Providers--
PublisherAnthropicOpenAI
Reported scores

FAQ

Is Claude Opus 4.8 or GPT-5 Mini better?
Across the 24 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 Mini compare on GPQA Diamond?
Claude Opus 4.8 scores 92.0% and GPT-5 Mini scores 68.7% on GPQA Diamond.
Which is cheaper, Claude Opus 4.8 or GPT-5 Mini?
GPT-5 Mini is cheaper at $2.00 per million output tokens against $25.00 for Claude Opus 4.8 - about 12.5x.
When were Claude Opus 4.8 and GPT-5 Mini released?
Claude Opus 4.8 was released 28 May 2026 by Anthropic. GPT-5 Mini was released 7 Aug 2025 by OpenAI.

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