GPT-5 nano vs o4-mini
OpenAI GPT-5 nano | OpenAI o4-mini | |
|---|---|---|
| Overview | ||
| Company | OpenAI | OpenAI |
| Release date | Aug 7 2025 | Apr 16 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. | — | 8% |
| Timeline | ||
| Release gap | o4-mini shipped 113 days before GPT-5 nano | |
Which is better: GPT-5 nano or o4-mini?
GPT-5 nano and o4-mini don't publish scores on any of the same benchmarks, so there's no direct head-to-head comparison. o4-mini shipped 113 days before GPT-5 nano, 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-5 nano and o4-mini don't publish scores on any of the same benchmarks.
Frequently asked questions
GPT-5 nano was released by OpenAI on Aug 7 2025.
o4-mini was released by OpenAI on Apr 16 2025.
Other comparisons
GPT-5 nano vs Claude Sonnet 5o4-mini vs Claude Sonnet 5GPT-5 nano vs Gemini Omnio4-mini vs Gemini OmniGPT-5 nano vs Muse Spark 1.1o4-mini vs Muse Spark 1.1GPT-5 nano vs Grok 4.5o4-mini vs Grok 4.5GPT-5 nano vs DeepSeek-V4-Proo4-mini vs DeepSeek-V4-ProGPT-5 nano vs Mistral Medium 3.5o4-mini vs Mistral Medium 3.5