Google: Gemini 3.1 Pro Preview vs xAI: Grok 4.20
Side-by-side comparison — pricing, context window, capabilities, and live leaderboard data.
Key differences
- xAI: Grok 4.20 is 38% cheaper per 1K input tokens than Google: Gemini 3.1 Pro Preview ($0.0013 vs $0.0020).
- Google: Gemini 3.1 Pro Preview is built by Google; xAI: Grok 4.20 is built by xAI.
Specifications
| Google: Gemini 3.1 Pro Preview | xAI: Grok 4.20 | |
|---|---|---|
| Provider | xAI | |
| Context window | 1049K | 2000K |
| Max output tokens | 8192 | 8192 |
| Input price / 1K tokens | $0.0020 | $0.0013 |
| Output price / 1K tokens | $0.0120 | $0.0025 |
| Vision support | Yes | Yes |
| Function calling | No | No |
| License | Proprietary | Proprietary |
About Google: Gemini 3.1 Pro Preview
US·ClosedGemini 3.1 Pro Preview is Google’s frontier reasoning model, delivering enhanced software engineering performance, improved agentic reliability, and more efficient token usage across complex workflows. Building on the multimodal foundation...
View Google: Gemini 3.1 Pro Preview reliability and benchmark history →About xAI: Grok 4.20
US·ClosedGrok 4.20 is a reasoning model from xAI with industry-leading speed and agentic tool calling capabilities. It combines the lowest hallucination rate on the market with strict prompt adherance, delivering...
View xAI: Grok 4.20 reliability and benchmark history →Try them yourself
Run the same prompt against Google: Gemini 3.1 Pro Preview and xAI: Grok 4.20 side-by-side on PromptPit.
Start a comparison