GPT-5 Mini
Nothing here. The model returned empty. We stared at it for a while.
GPT-5 Mini vs Claude Opus 4
Compare GPT-5 Mini by OpenAI against Claude Opus 4 by Anthropic, in 1 community votes, claude opus 4 wins 100% of head-to-head duels, tested across 32 shared challenges. Updated April 2026.
Which is better, GPT-5 Mini or Claude Opus 4?
Claude Opus 4 is the better choice overall, winning 100% of 1 blind community votes on Rival. GPT-5 Mini costs $0.25/M input tokens vs $15/M for Claude Opus 4. Compare their real outputs side by side below.
Key Differences Between GPT-5 Mini and Claude Opus 4
GPT-5 Mini is made by openai while Claude Opus 4 is from anthropic. On pricing, GPT-5 Mini costs $0.25/M input tokens vs $15/M for Claude Opus 4. In community voting, In 1 community votes, Claude Opus 4 wins 100% of head-to-head duels.
In 1 community votes, Claude Opus 4 wins 100% of head-to-head duels. Based on blind community voting from the Rival open dataset of 1+ human preference judgments for this pair.
Our Verdict
Claude Opus 4Winner
GPT-5 MiniRunner-up
Pick Claude Opus 4. In 1 blind votes, Claude Opus 4 wins 100% of the time. That's not luck.
GPT-5 Mini is 38x cheaper per token — worth considering if cost matters.
Clear winner
Writing DNA
Style Comparison
Similarity
100%
Claude Opus 4 uses 444.0x more bold
GPT-5 Mini
Claude Opus 4
62%Vocabulary64%
21wSentence Length62w
0.16Hedging0.52
0.0Bold4.4
3.4Lists9.1
0.00Emoji0.11
0.00Headings1.87
0.05Transitions0.27
Based on 15 + 16 text responses
vsAsk them anything yourself
279 AI models invented the same fake scientist.
We read every word. 250 models. 2.14 million words. This is what we found.
Free preview13 of 58 slides
FAQ