xAI
xAI's assistant with real-time X/Twitter data and Aurora image generation
Grok is xAI's AI assistant built into the X platform (formerly Twitter), with unique real-time access to the X data firehose. Grok 4.1 is available to all users; Grok 4.3 Beta (Apr 2026) adds multimodal video understanding and enhanced reasoning. The standalone Grok app offers image generation via Aurora. Grok tends to have fewer content restrictions than other major assistants.
Unique real-time awareness via live access to the X/Twitter data firehose.
Free on X (limited) · $8/mo X Premium for full Grok access