Compare AI models
| Overview | ||
| Company | SpaceXAI | SpaceXAI |
| Release date | Jul 9 2025 | Sep 19 2025 |
| Access | Closed | Closed |
| Model details | View model | View model |
Other comparisons
Grok 4vsClaude Sonnet 5.5Grok 4 FastvsClaude Sonnet 5.5Grok 4vsGPT-6.1 SolGrok 4 FastvsGPT-6.1 SolGrok 4vsGemini 4 ArgonGrok 4 FastvsGemini 4 ArgonGrok 4vsMuse Spark 1.3Grok 4 FastvsMuse Spark 1.3Grok 4vsDeepSeek-V4.1-FlashGrok 4 FastvsDeepSeek-V4.1-FlashGrok 4vsMistral Large 4Grok 4 FastvsMistral Large 4Frequently asked questions
Grok 4 and Grok 4 Fast don't publish scores on any of the same benchmarks, so there's no direct head-to-head comparison. Grok 4 shipped 72 days before Grok 4 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 — Grok 4 and Grok 4 Fast don't publish scores on any of the same benchmarks.