Gemini 2.5 Pro vs o3
Google Gemini 2.5 Pro | OpenAI o3 | |
|---|---|---|
| Overview | ||
| Company | OpenAI | |
| Release date | Mar 25 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. | 20% | 26%Best |
Coding SWE-Bench VerifiedReal coding tasks pulled from open-source projects — the AI has to find and fix actual bugs. A human-checked version of the original SWE-Bench. Higher is better. | 59.6% | — |
Science GPQA DiamondGraduate-level science questions in biology, physics, and chemistry — hard enough that subject-matter PhDs score around 65%. Higher is better. | 86.4% | — |
Multimodal MMMUTests the AI on understanding images and text together across many college subjects. Higher is better. | 68% | — |
| Timeline | ||
| Release gap | Gemini 2.5 Pro shipped 22 days before o3 | |
Which is better: Gemini 2.5 Pro or o3?
o3 leads Gemini 2.5 Pro on 1 of the 1 benchmark they both report (BullshitBench v2). Gemini 2.5 Pro shipped 22 days before o3, 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.
On BullshitBench v2, o3 leads at 26% vs Gemini 2.5 Pro at 20%.
Frequently asked questions
Gemini 2.5 Pro was released by Google on Mar 25 2025.
o3 was released by OpenAI on Apr 16 2025.
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