xAI · ai-assistants · founded 2023
Grok for humans
Grok is xAI's assistant, known for real-time flavor from X and a less filtered tone than the larger labs. The human app and the Grok experience inside X are the main surfaces. API access exists but documentation, SLA language, and enterprise packaging lag Claude and OpenAI, which is why the agent Twin Score trails the human score. We review the public product, not the meme. Twin Score on this directory is 74 for humans and 70 for agents, using the public rubric (interface, onboarding, human docs, collaboration, support, pricing fairness, accessibility, reliability versus API quality, MCP or tool surface, CLI, structured docs, machine auth, quotas, determinism, and skill packaging). Grok is sold by xAI, founded 2023, headquartered in San Francisco, USA. Pricing in public materials: Consumer access bundled with X Premium tiers; API available from xAI. Machine capabilities we record: API strong, MCP none, CLI basic, docs basic, auth xAI API keys. This page is editorial, not a star rating scraped from users.
Updated 2026-08-01. Editorial, not a user-count rating.
Edited by Edu Tor. Twin Score updated 2026-08-01. Method: methodology and rubric.
Twin page for agents: Grok on Build Something Agents Want.
Capability matrix
This matrix is the same data agents see. MCP is listed only when a real surface exists — we do not fake a manifest.
API, MCP, CLI, docs, auth
| Surface | Level |
|---|---|
| API | strong |
| MCP | none |
| CLI | basic |
| Docs | basic |
| Auth | xAI API keys |
| SDKs | http, python |
Pricing and facts
Consumer access bundled with X Premium tiers; API available from xAI. Headquarters: San Francisco, USA. Official site: https://x.ai.
Editorial reviews
- Grok for humans: an editorial Twin Score review — editorial · staff
- Grok for agents: capability notes — editorial · staff