AI API Router Directory

Grok Build is xAI's terminal coding agent, installed from x.ai/cli and documented at docs.x.ai/build, running on grok-4.6. The official CLI page states the tool is available to try for free and the client is open source, while xAI's developer pricing page meters every request at API token rates: grok-4.6 costs $2.00 per million input tokens, $0.50 per million cached input tokens and $6.00 per million output tokens for prompts under 200k tokens, rising to $4.00 / $1.00 / $12.00 once a request reaches the long-context threshold.

No numeric free allowance is stated - x.ai/cli says only that Grok Build is available to try for free (checked 2026-09-16).

web-cookie access — wraps the provider web app (unofficial). Paste the full grok.com cookie line from DevTools → Application → Cookies. Include both `sso` and `sso-rw` (e.g. `sso=...; sso-rw=...`) — Grok's anti-bot rejects `sso` on its own. 7 models tracked (via OpenRouter catalog).

A free tier is available; the exact credit value is not quantified.

OAuth access — sign-in with your existing account. Sign in with xAI to use api.x.ai models such as Grok 4.5. This is separate from Grok Build JWT sessions, which use cli-chat-proxy.grok.com and grok-build model aliases. 7 models tracked (via OpenRouter catalog).

A free tier is available; the exact credit value is not quantified.