xAI builds artificial intelligence to accelerate human scientific discovery. We are guided by our mission to advance our collective understanding of the universe.
Grok for conversation. Voice for natural interfaces. The API for production. The Macroscope for understanding our largest training runs.
Reasoning trained on a curated curriculum spanning math, code, and the open web. Available in the Grok app, on X, and via API.
Sub-300ms latency, expressive prosody, and voice cloning under tight consent gates. Ship voice agents that don't sound like dictation.
Drop-in compatible with the OpenAI client. Streaming, tool calls, structured outputs, multi-region. Pay only for tokens you use.
Tools for understanding what large models learn. Open notebooks on interpretability, evals, and the long-tail of reasoning failures.
Three plans. No volume tiers, no marketing seats. Build a prototype on the Free tier, scale to production without re-architecting.
Tokens and primitives behind the xAI marketing surface — colors grouped by role, the Universal-Sans-and-Geist-Mono ladder, the radius scale, and the canonical component set. Source: DESIGN.md. Single near-black canvas. Pill is the brand.