Grok 4.3

Grok 4.3 release interface showing AI chat with token processing visualization

xAI Releases Grok 4.3 with Always-On Reasoning and One Million Token Context

xAI shipped Grok 4.3 out of beta with one million token context window, always-on reasoning, and Custom Voices voice cloning suite. The company also launched Imagine Agent Mode directly on the web interface.

Shima Zamil ·