Model comparison
Grok 3 vs o3
xAI
Grok 3
xAI's third-generation model - superseded by Grok 4.
OpenAI
o3
OpenAI's mainstream reasoning model - production-viable thinking.
Specs
| Metric | Grok 3 | o3 |
|---|---|---|
| Context window | 131K tokens | 200K tokens↑ |
| Input $/1M tokens | $3.00 | $2.00↑ |
| Output $/1M tokens | $15.00 | $8.00↑ |
| Modalities | Text | Image · Text · File |
| Open weights | No | No |
| Released | - | Apr 2025 |
Capability differences
| Capability | Grok 3 | o3 |
|---|---|---|
| Vision | Yes | No |
Key differences
- -Grok 3 offers 131K context; o3 offers 200K.
- -Input pricing: Grok 3 at $3.00/1M vs o3 at $2.00/1M.