Compare ChatGPT-4o (March 2025) and GPT-5 Mini, both from OpenAI, in 7 community votes, gpt-5 mini wins 80% of head-to-head duels, tested across 32 shared challenges. Updated April 2026.
GPT-5 Mini is the better choice overall, winning 80% of 7 blind community votes on Rival. ChatGPT-4o (March 2025) costs $5/M input tokens vs $0.25/M for GPT-5 Mini. Compare their real outputs side by side below.
ChatGPT-4o (March 2025) is made by openai while GPT-5 Mini is from openai. On pricing, ChatGPT-4o (March 2025) costs $5/M input tokens vs $0.25/M for GPT-5 Mini. In community voting, In 7 community votes, GPT-5 Mini wins 80% of head-to-head duels.
In 7 community votes, GPT-5 Mini wins 80% of head-to-head duels. GPT-5 Mini leads in Image Generation. Based on blind community voting from the Rival open dataset of 7+ human preference judgments for this pair.
Pick GPT-5 Mini. In 7 blind votes, GPT-5 Mini wins 80% of the time. That's not luck.
GPT-5 Mini particularly excels in Image Generation. GPT-5 Mini is 7.5x cheaper per token — worth considering if cost matters.
ChatGPT-4o (March 2025) uses 329.7x more bold
Ask them anything yourself
Some models write identically. You are paying for the brand.
178 models fingerprinted across 32 writing dimensions. Free research.
185x
price gap between models that write identically
178
models
12
clone pairs
32
dimensions
279 AI models invented the same fake scientist.
We read every word. 250 models. 2.14 million words. This is what we found.

Compare ChatGPT-4o (March 2025) and GPT-5 Mini, both from OpenAI, in 7 community votes, gpt-5 mini wins 80% of head-to-head duels, tested across 32 shared challenges. Updated April 2026.
GPT-5 Mini is the better choice overall, winning 80% of 7 blind community votes on Rival. ChatGPT-4o (March 2025) costs $5/M input tokens vs $0.25/M for GPT-5 Mini. Compare their real outputs side by side below.
ChatGPT-4o (March 2025) is made by openai while GPT-5 Mini is from openai. On pricing, ChatGPT-4o (March 2025) costs $5/M input tokens vs $0.25/M for GPT-5 Mini. In community voting, In 7 community votes, GPT-5 Mini wins 80% of head-to-head duels.
In 7 community votes, GPT-5 Mini wins 80% of head-to-head duels. GPT-5 Mini leads in Image Generation. Based on blind community voting from the Rival open dataset of 7+ human preference judgments for this pair.
Pick GPT-5 Mini. In 7 blind votes, GPT-5 Mini wins 80% of the time. That's not luck.
GPT-5 Mini particularly excels in Image Generation. GPT-5 Mini is 7.5x cheaper per token — worth considering if cost matters.
ChatGPT-4o (March 2025) uses 329.7x more bold
Ask them anything yourself
Some models write identically. You are paying for the brand.
178 models fingerprinted across 32 writing dimensions. Free research.
185x
price gap between models that write identically
178
models
12
clone pairs
32
dimensions
279 AI models invented the same fake scientist.
We read every word. 250 models. 2.14 million words. This is what we found.

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15+ more head-to-head results. Free. Not a trick.
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27 fights queued
15+ more head-to-head results. Free. Not a trick.
Free account. No card required. By continuing, you agree to Rival's Terms and Privacy Policy