Google Gemini 1.5 Pro vs xAI Grok 4.1 Fast — side-by-side specs.
Google Gemini 1.5 Pro | xAI Grok 4.1 Fast | |
|---|---|---|
| Overview | ||
| Company | xAI | |
| Release date | Feb 15 2024 | Nov 19 2025 |
| Model type | — | — |
| Open source | No | No |
| Specifications | ||
Parameters | — | — |
Context window | — | — |
| Benchmarks | ||
Science reasoning GPQA Diamond | — | — |
Software engineering SWE-Bench Verified | — | — |
Multimodal understanding MMMU | — | — |
| Timeline | ||
| Release gap | Gemini 1.5 Pro shipped 643 days before Grok 4.1 Fast | |
Gemini 1.5 Pro and Grok 4.1 Fast do not have directly comparable benchmark scores published on GPQA Diamond, SWE-Bench Verified, or MMMU. Gemini 1.5 Pro shipped 643 days before Grok 4.1 Fast, so benchmark comparisons should account for the intervening progress.
Published specifications for these two models are limited — see each model page for the latest details.
Direct benchmark comparisons are unavailable — at least one of these models has not published scores on GPQA Diamond, SWE-Bench Verified, or MMMU.