What Grok is
Grok is the frontier-model and AI-assistant family from xAI. After xAI announced its merger into SpaceX in February 2026, the company’s site has operated under the SpaceXAI brand, with Grok covering reasoning, code, voice, images, and video. The name refers to two related things: the Grok assistant for everyday users (chat, search, image and video generation, voice conversations), and the model API for developers. This page covers the family as a whole; Grok Bot, the always-on cloud agent, is a separate product on the same line — see Grok Bot.
Product forms and usage
Consumer entry points include the grok.com web app, iOS and Android apps, and Grok inside X. Per the official pages, the assistant supports everyday chat and writing, search that combines the live web and X with citations, text-to-image and text-to-video generation (Imagine), voice conversations, file and image understanding, and a multi-agent mode that runs parallel agents on complex questions.
The developer entry point is the official documentation site: a unified API spans text, code, voice, images, and video, with an OpenAI-compatible endpoint (api.x.ai/v1) plus Python, TypeScript, and other SDKs. Which models are current changes over time; treat the official model pages as authoritative.
Boundaries
The Grok assistant is free to try, and a SuperGrok subscription adds higher limits and priority access; the developer API is billed by usage, with custom quotas and deployment options for enterprise customers. Prices and quotas are on the official pages. As with any AI assistant, search results and generated content should be verified independently, and officially listed features and regional availability can change between releases.
Mentioned on the podcast
In Weekly #002, in the chapter “Agent API：还需要自己维护一套 Harness 吗” (Agent API: do you still need to maintain your own harness?), Guizang discussed the various “shell” products that wrap coding agents, and listed Grok alongside Claude Code and Cursor as one of the channels these shells have to adapt to, describing Grok’s place in the coding-agent ecosystem.
Other passages tagged Grok in Weekly #001 and #002 actually discuss Grok Bot — the persistent cloud computer and progressive authorization — and are covered on the Grok Bot page, not repeated here. Both discussions are in the Chinese transcript; an English transcript is not available.
FAQ
What is Grok?
Grok is the frontier-model and AI-assistant family from SpaceXAI (the brand xAI operates under after merging into SpaceX), offering web and mobile assistants, an entry inside X, and a developer API. See the official introduction.
Who makes Grok?
Grok is developed by xAI; xAI announced its merger into SpaceX in February 2026 and the site now runs under the SpaceXAI name. See the announcement.
What is the difference between Grok and Grok Bot?
Grok is the model and assistant family (chat, search, generation, API); Grok Bot is an autonomous agent on the same product line that runs on a persistent cloud computer and takes multi-step tasks via messages. See Grok Bot.
How much does Grok cost?
The official assistant pages say it is free to try, with a SuperGrok subscription adding higher limits and priority access; the developer API is usage-based. Plans and rates are at grok.com/plans and official pricing pages.
Where do I get access to the Grok API?
Developers get API keys and integration guides from the official documentation site, which offers an OpenAI-compatible endpoint (api.x.ai/v1) and Python, TypeScript, and other SDKs.
Does “grok” mean anything else?
Yes. As an English word, “grok” comes from Robert Heinlein’s 1961 science-fiction novel Stranger in a Strange Land, where it is a Martian term. Etymology results in search results are unrelated to xAI’s Grok.