Model comparison
Grok 3 vs Gemini 3.1 Pro
xAI
Grok 3
xAI's bet on inference compute, wired into X for fresh context.
Gemini 3.1 Pro
Google's latest frontier model with expanded reasoning.
Specs
| Metric | Grok 3 | Gemini 3.1 Pro |
|---|---|---|
| Context window | 131K tokens | 1.0M tokens↑ |
| Input $/1M tokens | $3.00 | $2.00↑ |
| Output $/1M tokens | $15.00 | $12.00↑ |
| Modalities | Text | Audio · File · Image · Text · Video |
| Open weights | No | No |
Capability differences
| Capability | Grok 3 | Gemini 3.1 Pro |
|---|---|---|
| Prompt caching | No | Yes |
Key differences
- —Grok 3 offers 131K context; Gemini 3.1 Pro offers 1.0M.
- —Input pricing: Grok 3 at $3.00/1M vs Gemini 3.1 Pro at $2.00/1M.