Tier lists / LLMs & model APIs / Grok API (SpaceXSI / x.ai)
API for Grok models (the x.ai site is now branded SpaceXSI), plus image, video and voice APIs; OpenAI-compatible.
Use it when…
You want Grok models in your app.
Skip it if…
You need the largest third-party ecosystem.
Score breakdown
Initial editorial estimate from public info; not yet hands-on tested. How we score →
Details
- 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
Changelog
- Oct 18, 2026: Initial listing; score 75 (A) as editorial estimate.
Alternatives for this job
S Frontier model API from OpenAI
88/100
S Frontier model API from Anthropic
87/100
S Gemini models via Google AI Studio
87/100 free tier
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