Grok Imagine Video API pricing: the cheapest price per second

The short answer

• Grok Imagine Video 1.5 costs $0.04, $0.07 and $0.13 a second on Revana at 480p, 720p and 1080p, against xAI's own $0.08, $0.14 and $0.25: 48% below xAI at 1080p and the lowest listed price we found at each resolution.
• Grok Imagine Video (the first version) costs $0.02 a second at 480p and $0.03 at 720p, against xAI's $0.05 and $0.07, also the lowest we found.
• Both make sound with the picture, and on Revana you pay only for clips that finish. Every other model's price is on the pricing page, and the model catalogue lists them all.

Grok Imagine Video 1.5 price per second

xAI's newest video model takes text, a starting image, first and last frames or reference images, and renders up to 15 seconds with sound. The list price per second of output on each API, checked on 26 October 2026:

fal charges the same as xAI. Replicate charges one $0.08 rate at 480p and 720p and does not offer 1080p.

Grok Imagine Video price per second

The first Grok Imagine Video model is cheaper and still a good fit for quick drafts and social clips:

Revana also renders this model at 1080p, at $0.05 a second; none of the other APIs we checked list a 1080p tier for it.

What a clip costs

The same clips, priced per second on each:

Making a Grok Imagine Video request

Create a key on the sign-up page, add credit, and send one JSON request with the model name and its input. The job returns an id to poll, or calls your webhook when it finishes. The docs list every field. For Grok Imagine Video 1.5 at 720p with sound:

curl https://api.revana.si/v1/generations \
  -H "Authorization: Bearer $REVANA_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "grok-imagine-video-1.5",
    "input": {
      "prompt": "A slow dolly shot through a neon-lit night market in the rain, steam rising from food stalls",
      "resolution": "720p",
      "duration": 10,
      "aspect_ratio": "16:9",
      "audio": true
    },
    "max_cost_usd": 1
  }'

The finished job carries the video link and cost_usd, the exact amount charged. Use grok-imagine-video as the model for the first version.

How we compared

Every figure is the seller's own list price on 26 October 2026: xAI's API pricing, fal's pages for Grok Imagine Video 1.5 and Grok Imagine Video, and Replicate's for 1.5 and the first version. Image and video inputs, which some sellers bill on top, card fees and volume discounts are left out. The raw numbers, each with the date it was checked, are in market-prices.json. For other models, see the cheapest AI video API roundup and the Seedance 2.5 price comparison.