xAI

All Grok models, always current

Live model list with release dates, context windows, and recommended use cases. Updated 2026-05-23.

Manually curated from the vendor's announcements. Refreshed monthly. Vendor's official model docs ↗

Grok 4

grok-4

xAI's current flagship with realtime knowledge access via X integration.

Flagship

Released: Feb 20, 2026
Context: 256k
Capabilities: realtime webtool usevision

Grok 4 Fast

grok-4-fast

Cheaper, faster Grok 4 variant. For chatbot use cases.

Fast

Released: Feb 20, 2026
Context: 128k
Capabilities: realtime webtool use

Grok 3

grok-3

Prior-gen Grok. Available for legacy compatibility.

Balanced

Released: Sep 10, 2025
Context: 128k
Capabilities: realtime webtool usevision

Call it on JJAPI

Last updated: 2026-05-23

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