Pyyan / Compare / o3 / o4-mini vs Gemini 3.1 Pro
o3 / o4-mini vs Gemini 3.1 Pro
2 of 5Language Models · verified 13 Aug 2026
o3 / o4-miniOpenAIretiredGemini 3.1 ProGooglecurrent
| Specification | o3 / o4-mini | Gemini 3.1 Pro |
|---|---|---|
| Summary | The o-series reasoning line, retired Feb 2026. | Best for very large multimodal context. |
| Context | — | 1M |
| Licence | Proprietary | Proprietary |
| Category | Language Models | Language Models |
| Official | OpenAI ↗ | Google ↗ |
Highlighted rows are where these differ.
o3 / o4-mini
- Reasoning is now an effort setting on GPT-5.x, not a separate model
Best for nothing — migrate.
Gemini 3.1 Pro
- Reads an hour of video in one pass
- Strongest multimodal grounding
Best for long documents.