Grok 4
xAI · Grok · closed weights
Facts and where they come from
| Released | 2025-07 | labofficial docsannouncement dated July 9, 2025 |
|---|---|---|
| Licence | proprietary | labofficial docsweights not published |
| Total parameters | not disclosed | not disclosed |
| Active parameters | not disclosed | not disclosed |
| Context length | 250K tokens | labofficial docsannouncement: 256,000 context window |
Architecture
not disclosed No diagram or modelled costs: xAI has not disclosed the architecture or size.