Model release

xAI launches Grok 4

Native tool use and live search become part of the Grok reasoning model.

Model labxAI

Release date9 Jul 2025

xAI launched Grok 4 with native tool use and real-time search, making it available through subscriptions and an API. xAI

Sources & attribution

Organizational disclosure 9 Jul 2025
xAI launches Grok 4
xAI. Original developer announcement.
Organizational disclosure 19 Feb 2025
grok 3 beta release announcement
xAI. Original developer announcement.