xAI
Elon Musk's AI company building the Grok family of models, integrated with the X platform.
Founded
2023
Headquarters
Austin, TX, USA
CEO
Elon Musk
Models
2
xAI Models
| Model | Status | Context | Max Output | Input $/MTok | Output $/MTok | Released |
|---|---|---|---|---|---|---|
| Grok 4 Grok 4 | current | 256K | 131.1K | $3.00 | $15.00 | 2025-07-09 |
| Grok 4.1 Fast Grok 4 | current | 2M | 131.1K | $0.20 | $0.50 | 2025-11-19 |
Tools Using xAI Models
Recent xAI Updates
All updates →
2025-11-19
release
Grok 4.1 Fast
Grok 4.1 Fast released with industry-leading 2M token context window at $0.20/$0.50 per MTok.
source ↗Model data sourced from official xAI documentation. Last updated 2026-03-12.