grok imagine 1.5 apigrok image to video apigrok i2v
Grok Imagine 1.5 Image-to-Video API Guide — Animate Still Images
Complete developer guide to Grok Imagine 1.5 i2v API on GenRelay — job submission, async polling, motion prompts, cost math, and comparison with Veo 3.1 i2v.
Sep 1, 2026