Anthropic Claude 2.1 vs xAI Grok Code Fast 1 — side-by-side specs.
Anthropic Claude 2.1 | xAI Grok Code Fast 1 | |
|---|---|---|
| Overview | ||
| Company | Anthropic | xAI |
| Release date | Nov 21 2023 | Aug 28 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 | Claude 2.1 shipped 646 days before Grok Code Fast 1 | |
Claude 2.1 and Grok Code Fast 1 do not have directly comparable benchmark scores published on GPQA Diamond, SWE-Bench Verified, or MMMU. Claude 2.1 shipped 646 days before Grok Code Fast 1, 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.