Updated March 26, 2026· Based on independent benchmark data
xAI: Grok 4.20 is 1.6x cheaper at $1.25/1M tokens vs $2.00/1M.
| Metric | xAI: Grok 4.20 | Gemini 3.1 Pro Preview |
|---|---|---|
| Intelligence Score | N/A | 57.2 |
| Coding Score | N/A | 55.5 |
| Math Score | N/A | N/A |
| Speed (tok/s) | N/A | 113 tok/s |
| Latency (TTFT) | N/A | 23.84s |
| Input Price / 1M tokens | $1.25 | $2.00 |
| Output Price / 1M tokens | $2.50 | $12 |
| Context Window | 2M | 1.0M |
| Max Output Tokens | N/A | N/A |
| Input Modalities | Text + Image + File | Audio + File + Image + Text + Video |
| Output Modalities |
xAI: Grok 4.20 is more affordable at $1.25/1M input tokens ($2.50/1M output), while Gemini 3.1 Pro Preview costs $2.00/1M input ($12/1M output). For a typical workload of 100 requests per day at 2,000 tokens each, xAI: Grok 4.20 would cost approximately $7.50/month vs $12.00/month for Gemini 3.1 Pro Preview in input costs alone.
xAI: Grok 4.20 offers a larger context window at 2M tokens compared to Gemini 3.1 Pro Preview's 1.0M.
Choose xAI: Grok 4.20 when you need lower cost.
xAI: Grok 4.20 is cheaper at $1.25/1M input tokens vs $2.00/1M for Gemini 3.1 Pro Preview.
Yes, xAI: Grok 4.20 supports image input. Gemini 3.1 Pro Preview also supports images.
xAI: Grok 4.20 has a larger context window at 2M compared to Gemini 3.1 Pro Preview's 1.0M.
Data last synced: March 26, 2026
| Text |
| Text |
| Free Tier | No | No |