Grok Imagine video at $0.08 a second: vendor ladder vs Sume

xAI's pricing table, read 2026-10-13, lists grok-imagine-video-1.5 at $0.080 per second, grok-imagine-video at $0.050 and grok-imagine-video-1.5-lite at $0.020. That makes a 10-second clip $0.80, $0.50 or $0.20 on xAI. Sume's catalog has grok-imagine-video-1.5 for image-to-video only at 480p and 720p, 4 to 15 seconds; the repo price table has it at $0.01 list per second, so $0.0125 at x1.25 (a 10-second clip is $0.13 after the cent round-up). Confirm in GET /v1/videos/models before you rely on it.

The vendor ladder against Sume's text-to-video rows

The Sume Grok row is image-to-video only, so for a text prompt the useful comparison is a text-to-video row at the same tier. These are list x 1.25 from the repo tables.

Pick by task

The xAI page does not state resolutions per price, so the ladder above cannot be matched to a Sume tier from that source alone. If you start from a still, Sume's Grok row animates it; if you start from words, use Wan 3.0 or Omni Flash and compare per-second figures.