TPSTokens Per Second

Grok 4

xAI
active

xAI's most capable model. Major reasoning and multimodal improvements over Grok 3 with an expanded 256K context window.

Context window256K tokens
Input / 1M tokens$5
Output / 1M tokens$25

Version History

grok-4-betamajorFebruary 1, 2026

Grok 4 launches as xAI flagship with 256K context and major multimodal capability leap over Grok 3. Claims top-tier performance on coding and reasoning benchmarks.