GPT-4o vs GPT-5 mini
OpenAI GPT-4o | OpenAI GPT-5 mini | |
|---|---|---|
| Overview | ||
| Company | OpenAI | OpenAI |
| Release date | May 13 2024 | Aug 7 2025 |
| Access | Proprietary | Proprietary |
| Benchmarks | ||
Nonsense detection BullshitBench v2Given a confidently-worded but nonsensical prompt, does the AI spot that it makes no sense and push back — instead of playing along and inventing an answer? The score is how often it clearly called out the nonsense. Higher is better. | 12% | — |
| Timeline | ||
| Release gap | GPT-4o shipped 451 days before GPT-5 mini | |
Which is better: GPT-4o or GPT-5 mini?
GPT-4o and GPT-5 mini don't publish scores on any of the same benchmarks, so there's no direct head-to-head comparison. GPT-4o shipped 451 days before GPT-5 mini, so benchmark comparisons should account for the intervening progress.
Published specifications for these two models are limited — see each model page for the latest details.
Direct benchmark comparisons are unavailable — GPT-4o and GPT-5 mini don't publish scores on any of the same benchmarks.
Frequently asked questions
GPT-4o was released by OpenAI on May 13 2024.
GPT-5 mini was released by OpenAI on Aug 7 2025.
Other comparisons
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