LearnGrokGrok is xAI's assistant. The single most common source of early confusion is not the model; it is that "Grok" is reached through several different products, and those products do not all offer the same things at the same time.
The surfaces
- The Grok web app at grok.com, the fullest chat experience, and usually where new capabilities appear first.
- The mobile apps for iOS and Android: the same account, the same history, a smaller surface.
- Grok on X: Grok reached from inside X. Convenient when you are already reading a thread, more constrained than the dedicated app.
- Grok Bot: a separate product for handing work to an AI teammate that acts on your behalf rather than answering in a chat window. See x.ai/bot.
- The API at
api.x.ai: what you build on. Documented at docs.x.ai.
xAI also ships adjacent products (image and video generation, voice) and Grokipedia among them. They come and go from plans and regions; the product pages on x.ai are the only current list.
Why the distinction matters
Three practical consequences:
- A feature you read about may not exist where you are. A capability demonstrated in the web app is not automatically in the mobile app, in X, or in the API on the same day.
- Limits are per-plan, not per-model. How much you can do in a period is a billing question, and it is answered on xAI's pricing page, not by asking Grok, which frequently does not know its own current limits.
- The API is not the app. The app applies its own system prompt, tools and retrieval. An API call with the same wording will not reproduce an app answer, and that is expected rather than a bug.
What to do first
Pick one surface and stay in it for a week. Most "Grok is inconsistent" complaints turn out to be a comparison across two surfaces, or across two days in a period when a model was rolled forward.
What changes
Everything specific in this area (which model backs which surface, which features are in which plan, which regions are covered) changes faster than any third-party page can track. Treat the lists above as a map of the territory, not as a spec sheet, and confirm details on x.ai and docs.x.ai.
