Model comparison
o1 vs Gemini 2.5 Pro
OpenAI
o1
The first reasoning model — historically important, now superseded.
Gemini 2.5 Pro
Google's bet on massive context and native multimodality.
Specs
| Metric | o1 | Gemini 2.5 Pro |
|---|---|---|
| Context window | 200K tokens | 1.0M tokens↑ |
| Input $/1M tokens | $15.00 | $1.25↑ |
| Output $/1M tokens | $60.00 | $10.00↑ |
| Modalities | Text · Image · File | Text · Image · File · Audio · Video |
| Open weights | No | No |
| Released | Dec 2024 | — |
Capability differences
| Capability | o1 | Gemini 2.5 Pro |
|---|---|---|
| Tool use | No | Yes |
| Vision | No | Yes |
| Prompt caching | No | Yes |
Key differences
- —o1 offers 200K context; Gemini 2.5 Pro offers 1.0M.
- —Input pricing: o1 at $15.00/1M vs Gemini 2.5 Pro at $1.25/1M.