Model comparison
Grok 4.20 vs GPT-5.4 Mini
xAI
Grok 4.20
xAI's fourth-generation model with a 2M-token context window.
OpenAI
GPT-5.4 Mini
GPT-5 economics for high-volume routine tasks.
Specs
| Metric | Grok 4.20 | GPT-5.4 Mini |
|---|---|---|
| Context window | 2M tokens↑ | 400K tokens |
| Input $/1M tokens | $1.25 | $0.750↑ |
| Output $/1M tokens | $2.50↑ | $4.50 |
| Modalities | Text · Image · File | File · Image · Text |
| Open weights | No | No |
| Released | Mar 2026 | Mar 2026 |
Capability differences
| Capability | Grok 4.20 | GPT-5.4 Mini |
|---|---|---|
| Extended thinking | Yes | No |
| Prompt caching | No | Yes |
Key differences
- -Grok 4.20 offers 2M context; GPT-5.4 Mini offers 400K.
- -Input pricing: Grok 4.20 at $1.25/1M vs GPT-5.4 Mini at $0.750/1M.