X @xAI
xAIยท2025-09-19 23:34
Pricing & Availability - Grok 4 Fast is temporarily FREE on OpenRouter and Vercel AI Gateway [1] - Grok 4 Fast is generally available via the xAI API [1] - xAI API pricing starts at $0.20 per 1 million input tokens [1] - xAI API pricing starts at $0.50 per 1 million output tokens [1]