Search engine that answers questions using peer-reviewed research papers
Boston, US
1
◆ AfterJournal
AI apps, startups and the people building them
Author guidelines
·
Write for us
·
Contact
Grok
xAI's chat assistant, built into X and available as its own app
US
Founded 2023
500+ employees
About
Grok is a chat assistant made by xAI, the AI company founded by Elon Musk in 2023. It first launched in November 2023 for paying users of X, the social network formerly known as Twitter. It answers questions, writes text, explains posts and creates images.
Grok runs on xAI's own Grok models. It can pull in recent posts from X, which helps it answer questions about news and trending topics. It also searches the web, reads images and has a voice mode. Besides the version inside X, it has its own website and mobile apps. It has also drawn criticism at times over offensive or false answers.
Basic use is free with limits. X Premium subscribers and SuperGrok subscribers get higher limits and newer models. Developers can use Grok models through the xAI API. xAI trains its models on a large computing cluster called Colossus in Memphis, Tennessee. In 2025 xAI and X were merged into one company.
Grok runs on xAI's own Grok models. It can pull in recent posts from X, which helps it answer questions about news and trending topics. It also searches the web, reads images and has a voice mode. Besides the version inside X, it has its own website and mobile apps. It has also drawn criticism at times over offensive or false answers.
Basic use is free with limits. X Premium subscribers and SuperGrok subscribers get higher limits and newer models. Developers can use Grok models through the xAI API. xAI trains its models on a large computing cluster called Colossus in Memphis, Tennessee. In 2025 xAI and X were merged into one company.
Contact Grok
Related Businesses
Meta's assistant inside WhatsApp, Instagram, Facebook and Messenger
Menlo Park, US
1
Mistral AI's assistant from France, with fast answers and web search
Paris, FR
1
Google's AI assistant, built into Search, Android and Workspace
Mountain View, US
1
◆ Newsletter
Ideas worth your inbox.
The best new stories, startups and AI tools every week. No noise, unsubscribe anytime.