xAI
US · founded 2023 · x.ai
Elon Musk-founded lab building Grok with the Colossus supercomputer.
Releases (14)
| Model | Released | Type | Arch | Params (B) | Open | Status |
|---|---|---|---|---|---|---|
| Grok 4.5 | Jul 25, 2026 | Multimodal | Unknown | Not disclosed | Closed | Active |
| Grok 4.1 | Oct 16, 2025 | Text LLM | Unknown | Not disclosed | Closed | Active |
| Grok 4.1 Fast | Sep 8, 2025 | Multimodal | Unknown | Not disclosed | Closed | Active |
| Grok Code Fast 1 | Aug 8, 2025 | Text LLM | MoE | Not disclosed | Closed | Active |
| Grok 4 Fast | Jul 24, 2025 | Multimodal | MoE | 1,700 | Closed | Active |
| Grok-4 | Jul 9, 2025 | Multimodal | MoE | 1,700 | Closed | Active |
| Grok-3 mini | Feb 24, 2025 | Text LLM | MoE | Not disclosed | Closed | Active |
| Grok-3 | Feb 17, 2025 | Multimodal | MoE | Not disclosed | Closed | Active |
| Grok-2-1212 | Dec 12, 2024 | Multimodal | MoE | 314 | Closed | Active |
| Grok-2 mini | Aug 13, 2024 | Text LLM | MoE | Not disclosed | Closed | Active |
| Grok-2 | Aug 13, 2024 | Multimodal | MoE | 314 | Closed | Active |
| Grok-1.5V | Apr 12, 2024 | Multimodal | MoE | 314 | Closed | Deprecated |
| Grok-1.5 | Mar 28, 2024 | Multimodal | MoE | 314 | Closed | Deprecated |
| Grok-1 | Nov 3, 2023 | Multimodal | MoE | 314 | Closed | Deprecated |