Tier lists / LLMs & model APIs / Grok API (SpaceXSI / x.ai)

Grok API (SpaceXSI / x.ai)

Grok models via API

/ 100

API for Grok models (the x.ai site is now branded SpaceXSI), plus image, video and voice APIs; OpenAI-compatible.

You want Grok models in your app.

You need the largest third-party ecosystem.

Score breakdown

Job fit20/30

Ease / time-to-first-result13/15

Value11/15

Momentum13/15

Openness & portability6/10

Trust & maturity8/10

Builder/gamer bonus4/5

Initial editorial estimate from public info; not yet hands-on tested. How we score →

Pricing: Pay-per-token; vendor page lists grok-4.7 from $2 per million tokens (seen Oct 18, 2026)
Unverified. Unverified: editorial summary. We couldn't confirm this on an official pricing page (JS-rendered, no public pricing, or usage-based) as of Oct 18, 2026.
Free tier: No (unverified)
Platforms: API
Open source: No
Official URL: https://x.ai/api
URL verified: Oct 18, 2026 (curl HTTP GET)
Last reviewed: Oct 18, 2026 by agent
Sources: https://x.ai/api