GPT-4.5 vs GPT-4o mini
OpenAI GPT-4.5 | OpenAI GPT-4o mini | |
|---|---|---|
| Overview | ||
| Company | OpenAI | OpenAI |
| Release date | Feb 27 2025 | Jul 18 2024 |
| 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. | — | 2% |
| Timeline | ||
| Release gap | GPT-4o mini shipped 224 days before GPT-4.5 | |
Which is better: GPT-4.5 or GPT-4o mini?
GPT-4.5 and GPT-4o mini don't publish scores on any of the same benchmarks, so there's no direct head-to-head comparison. GPT-4o mini shipped 224 days before GPT-4.5, 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-4.5 and GPT-4o mini don't publish scores on any of the same benchmarks.
Frequently asked questions
GPT-4.5 was released by OpenAI on Feb 27 2025.
GPT-4o mini was released by OpenAI on Jul 18 2024.
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