Vercel AI Gateway
Grok Imagine Video on Vercel
Grok Imagine video on Vercel (xai/grok-imagine-video-1.5-preview) — within the $5/month credit; for free video, Cloudflare's daily allowance is the surer route.
Cloudflare Workers AI
Free Grok Imagine Video on Cloudflare
Paid (Cloudflare Unified Billing): Grok video keyless via Cloudflare — prepaid credits, xAI pass-through pricing. (Video is paid on Vercel too.)