256K tokens
Context window
xAI Grok
Grok 4
Recent events, informal drafting
64K tokens
Max output
$3
Input per 1M
$15
Output per 1M
2025
Knowledge cutoff
text, image
Modalities
Last verified 20 May 2026 Report a correction
What it tends to refuse
Fewer refusals than the others by design, which cuts both ways
Has access to recent posts on some surfaces. Useful for anything time-sensitive, a liability for anything that must stay stable.