Grok is xAI's family of AI models and the chatbot of the same name; its site now uses the name SpaceXSI. It can chat, search the web and X, and create images and video.
In plain words
Grok is both an assistant you can talk to on the web and in phone apps, and a set of models developers can call through an API. It can look up current posts and web pages as it answers. An early version, Grok-1, a 314 billion parameter mixture-of-experts model, was released with open weights in March 2024. Newer versions are numbered, and the developer docs now recommend Grok 4.7 for code and chat.
A quick example
A typical use: you ask Grok what people are saying about a news story from this morning. It searches the web and X, then writes a summary with links to its sources.
Where you'll meet it
- The Grok assistant on web, iOS and Android.
- Developer apps built on the Grok API.
Related
Sources
- DocsOpen Release of Grok-1, xAI · read 11 Oct 2026
- DocsGrok, xAI · read 11 Oct 2026
- DocsModels and pricing, xAI Docs · read 11 Oct 2026
Checked by WhatIsAI against the sources above · 11 Oct 2026. Spotted an error? Report it.