Model comparison
Gemini 2.5 Flash vs Grok 4.20
Gemini 2.5 Flash
Cheap multimodal at million-token scale.
xAI
Grok 4.20
xAI's fourth-generation model with a 2M-token context window.
Specs
| Metric | Gemini 2.5 Flash | Grok 4.20 |
|---|---|---|
| Context window | 1.0M tokens | 2M tokens↑ |
| Input $/1M tokens | $0.300↑ | $1.25 |
| Output $/1M tokens | $2.50↑ | $2.50 |
| Modalities | File · Image · Text · Audio · Video | Text · Image · File |
| Open weights | No | No |
Capability differences
| Capability | Gemini 2.5 Flash | Grok 4.20 |
|---|---|---|
| Prompt caching | Yes | No |
Key differences
- -Gemini 2.5 Flash offers 1.0M context; Grok 4.20 offers 2M.
- -Input pricing: Gemini 2.5 Flash at $0.300/1M vs Grok 4.20 at $1.25/1M.