Model comparison
o3 vs Grok 3
OpenAI
o3
OpenAI's mainstream reasoning model - production-viable thinking.
xAI
Grok 3
xAI's third-generation model - superseded by Grok 4.
Specs
| Metric | o3 | Grok 3 |
|---|---|---|
| Context window | 200K tokens↑ | 131K tokens |
| Input $/1M tokens | $2.00↑ | $3.00 |
| Output $/1M tokens | $8.00↑ | $15.00 |
| Modalities | Image · Text · File | Text |
| Open weights | No | No |
Capability differences
| Capability | o3 | Grok 3 |
|---|---|---|
| Vision | No | Yes |
Key differences
- -o3 offers 200K context; Grok 3 offers 131K.
- -Input pricing: o3 at $2.00/1M vs Grok 3 at $3.00/1M.