Model comparison
Gemini 2.5 Flash vs o3
Gemini 2.5 Flash
Cheap multimodal at million-token scale.
OpenAI
o3
OpenAI's mainstream reasoning model - production-viable thinking.
Specs
| Metric | Gemini 2.5 Flash | o3 |
|---|---|---|
| Context window | 1.0M tokens↑ | 200K tokens |
| Input $/1M tokens | $0.300↑ | $2.00 |
| Output $/1M tokens | $2.50↑ | $8.00 |
| Modalities | File · Image · Text · Audio · Video | Image · Text · File |
| Open weights | No | No |
| Released | - | Apr 2025 |
Capability differences
| Capability | Gemini 2.5 Flash | o3 |
|---|---|---|
| Vision | Yes | No |
| Prompt caching | Yes | No |
Key differences
- -Gemini 2.5 Flash offers 1.0M context; o3 offers 200K.
- -Input pricing: Gemini 2.5 Flash at $0.300/1M vs o3 at $2.00/1M.