Model comparison
Grok 4.20 vs Grok 3
xAI
Grok 4.20
xAI's fourth-generation model with a 2M-token context window.
xAI
Grok 3
xAI's third-generation model - superseded by Grok 4.
Specs
| Metric | Grok 4.20 | Grok 3 |
|---|---|---|
| Context window | 2M tokens↑ | 131K tokens |
| Input $/1M tokens | $1.25↑ | $3.00 |
| Output $/1M tokens | $2.50↑ | $15.00 |
| Modalities | Text · Image · File | Text |
| Open weights | No | No |
Key differences
- -Grok 4.20 offers 2M context; Grok 3 offers 131K.
- -Input pricing: Grok 4.20 at $1.25/1M vs Grok 3 at $3.00/1M.