Grok Changelog
Release notes, new features, and updates tracked daily. Sourced from the official Grok changelog.
- Feature
xAI launches Grok custom voices: clone your speech with just one minute of audio
xAI launches Custom Voices for Grok. It clones voices from one minute of speech atop recent Speech-to-Text and Text-to-Speech APIs.
Source ↗ - Feature
Elon Musk testifies that xAI trained Grok on OpenAI models
Elon Musk testified that xAI trained Grok on OpenAI models. Model distillation draws scrutiny as labs block rivals from copying frontier AI.
Source ↗ - Launch
X Launches Grok-Powered Custom Feeds Replacing Communities
X replaces Communities with Grok-curated custom feeds. Vibe builders get personalized timelines plus new ad slots.
Source ↗ - Partnership
Pentagon adds xAI's Grok to GenAI.mil for DoD personnel
The US Department of Defense announced on April 22 that xAI's Grok will join the GenAI.mil service in early 2026 at IL5 certification, with 3M personnel and bundled real-time X platform access.
Source ↗ - Model Release
xAI releases Grok 4.3 Beta with video understanding, slide creation, Speech APIs
You can analyze videos, generate slides, and use new Speech-to-Text and Text-to-Speech APIs in Grok 4.3 Beta, available since April 17.
Source ↗