Grok 4 Fast
Retired · Language, Reasoning · Primary source available
- Lifecycle
- Milestone or variant
- Related model
- Source event
- AI Radar coverage
- Only month or year known
- 6 events
2025
2026
As of 10 October 2026
Released +2
Retired
Predecessor Grok 3 mini
Successor Grok 4.1 Fast
All events, in order
- Lineage Predecessor Grok 3 mini
- Lifecycle Released
- Source Announcement published
- Source Model card published
- Lineage Successor Grok 4.1 Fast
- Lifecycle Retired
← The full record of Grok 4 Fast, with every claim and its sources