Compare AI models
| Specifications | ||
Context windowHow much information the model can work with in one request, measured in tokens — pieces of words or other data. This includes your question, attachments, conversation and reply. Limits can vary by model variant and provider. | 9k | 2M |
| Overview | ||
| Company | Anthropic | SpaceXSI |
| Release date | Mar 14 2023 | Sep 19 2025 |
| Access | Closed | Closed |
| Model details | View model | View model |
Other comparisons
Claude 1vsGPT-6.1 SolGrok 4 FastvsGPT-6.1 SolClaude 1vsGemini 4 ArgonGrok 4 FastvsGemini 4 ArgonClaude 1vsMuse Spark OpenGrok 4 FastvsMuse Spark OpenClaude 1vsDeepSeek-V4.1-Flash-1017Grok 4 FastvsDeepSeek-V4.1-Flash-1017Claude 1vsMistral Large 4Grok 4 FastvsMistral Large 4Claude 1vsKimi K3Grok 4 FastvsKimi K3Frequently asked questions
Claude 1 and Grok 4 Fast don't publish scores on any of the same benchmarks, so there's no direct head-to-head comparison. Claude 1 shipped 920 days before Grok 4 Fast, so benchmark comparisons should account for the intervening progress.
Context windows are 9k (Claude 1) vs 2M (Grok 4 Fast).
Direct benchmark comparisons are unavailable — Claude 1 and Grok 4 Fast don't publish scores on any of the same benchmarks.