xAI

Grok (xAI)

Multimodal model

xAI's assistant with real-time access to X, integrated into Tesla and the X platform.

Version timeline as of Jun 25, 2026.

Version timeline

10 versions

Grok 4.3CurrentDefault
Released Apr 30, 2026grok-4.3· 1M ctx · Flagship
Current flagship; cost-efficient ($1.25/$2.50 per 1M), 1M context, strong agentic tool-calling and native real-time X/web access.
Grok 4.20Active
Released Feb 1, 2026grok-4.20· 1M ctx · Reasoning
Extended-reasoning model with Think Mode; strongest hallucination resistance in the Grok family ($2.00/$6.00 per 1M).