Model comparison
o3 vs DeepSeek V4 Pro
OpenAI
o3
OpenAI's mainstream reasoning model - production-viable thinking.
DeepSeek
DeepSeek V4 Pro
The price collapse - frontier quality at a fraction of the cost.
Specs
| Metric | o3 | DeepSeek V4 Pro |
|---|---|---|
| Context window | 200K tokens | 1.0M tokens↑ |
| Input $/1M tokens | $2.00 | $0.435↑ |
| Output $/1M tokens | $8.00 | $0.870↑ |
| Modalities | Image · Text · File | Text |
| Open weights | No | Yes |
| Released | - | Dec 2024 |
Capability differences
| Capability | o3 | DeepSeek V4 Pro |
|---|---|---|
| Extended thinking | Yes | No |
| Prompt caching | No | Yes |
| Open weights | No | Yes |
Key differences
- -o3 offers 200K context; DeepSeek V4 Pro offers 1.0M.
- -Input pricing: o3 at $2.00/1M vs DeepSeek V4 Pro at $0.435/1M.
- -DeepSeek V4 Pro is open weights; o3 is proprietary.