Elon Musk (pictured) revealed start-up xAI bore first fruit, with the release of an AI chatbot to a select group to rival OpenAI’s ChatGPT.

The chatbot is dubbed Grok and will be available to X premium subscribers after testing,

In a post on X promoting the launch last week, Musk bragged about the potential of the unit’s output.He said some aspects of its AI are “the best that currently exists”.

When the start-up was unveiled, it stated its goal was “to understand the true nature of the universe” and highlighted the experience of its team, which are drawn from companies including DeepMind, OpenAI and Google.

Dan Hendrycks, director of US non-profit Centre for AI Safety, is listed as an adviser.

As one of the co-founders of ChatGPT parent OpenAI, Musk has a history of AI development, but Financial Times noted he stepped down from the board in 2018 after alleged clashes with management on its approach to safety.

Musk was one of the high-profile attendees at a UK AI summit held this week to tackle ethical and safety concerns, which was hosted by Prime Minister Rishi Sunak.