For a limited time, Grok 4 Fast will be available for FREE on OpenRouter and Vercel AI Gateway. Grok 4 Fast is also generally available via the xAI API, with pricing starting at $0.20 / 1M input tokens and $0.50 / 1M output tokens.
For a limited time, Grok 4 Fast will be available for FREE on OpenRouter and Vercel AI Gateway. Grok 4 Fast is also generally available via the xAI API, with pricing starting at $0.20 / 1M input tokens and $0.50 / 1M output tokens.