From the source

Bringing Grok 4.5 to iOS, Android, Web, and X

Grok 4.5 is now available on grok.com, X, iOS, and Android.

Availability change

From the source
Grok 4.5, our most intelligent model yet, is now on grok.com, X, iOS, and Android.
x.ai

Other stories

xAI· 14 OctNew model

Speech-to-speech model with top benchmark scores and sub-second latency

xAI· 12 OctProduct launch

Bundles Grok, Cursor, and X Premium into one subscription

xAI

· 28 Sep

Capability change

Shared Grok Bots with team context and memory

xAI· 22 Sep

xAI· 21 SepModel update

Improved coding model with stronger safeguards and verification

xAI· 18 SepModel update

Twice as accurate as version 1.0 at the same price, now available.