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xAIVideo

Grok Imagine Video 1.5

xAI's video model with sound, from a prompt, a still or references.

video/grok-video-1.5
Try it in StudioUse with your agent or API

She dashes forward in a blur and unleashes a sweeping crescent slash of pink light; a wave of cherry petals bursts outward, her hair and sleeves whip through the air, and she lands, sliding to a stop and sheathing the sword with a calm smile. Dynamic anime action with a fast camera push. One continuous shot, no cuts, consistent character, correct anatomy and hands, no text, no logos, no captions.

Price
from 14 credits / second
Makes
Text to video, Image to video, Reference to video
Clip length
5 to 15 s

Best for

Grok Imagine Video 1.5 is xAI's video model. It generates clips with sound and placed in the top ten for image to video on the Artificial Analysis video arena in September 2026. In Summer it renders 720p clips from a prompt, a still or up to four reference images.

  • Quick animated social clips for an update or a jam entry.
  • Bringing a character illustration to life with sound.
  • Combining a character and a setting from reference images.

Put it together

Where Grok Imagine Video 1.5 fits in a game, with the models it works well with. Your agent runs every step.

Price

ModeModelPrice
Text to videoGrok Imagine Video 1.514 credits / second
Image to videoGrok Imagine Video 1.514 credits / second
Reference to videoGrok Imagine Video 1.5 References15 credits / second

Paid from your Summer credits.

Use it from code or your agent

Sign in once with summer login. Your agent or your code then runs it with your paid credits.

npx -y summer-engine@latest login
npx -y summer-engine@latest api run video/grok-video-1.5 \
  --input '{"prompt":"a dragon circling a castle at dawn","duration":5}' \
  --download .

video/grok-video-1.5: $0.14 per second of video. Paid from your Summer credits.

Inputs

What input takes for video/grok-video-1.5. Send only what you need; Summer fills in tested defaults.

  • promptstringup to 4000 characters

    What happens in the clip. Needed without imageUrl.

  • imageUrlstringup to 2048 characters

    A public image URL to animate (image to video).

  • endImageUrlstringup to 2048 characters

    With imageUrl: the last frame. The same image as imageUrl makes a seamless loop. Models with an end frame: Seedance, Kling 3, Wan, Vidu, LTX 2.5, Luma, MiniMax.

  • referenceImageUrlsarray of string1 to 10 items

    Reference to video: public images of the characters, props or style to keep (with a reference model, e.g. kling-4-ref). Motion transfer: the character to move.

  • videoUrlstringup to 2048 characters

    An input clip (public URL, at most 20 s): restyle or reframe it, move a character with its motion, or add sound to it (e.g. kling-video-to-audio). Billed on the clip's length.

  • durationintegerDefault 5 · 1 to 20

    Seconds; the model renders its nearest supported length.

  • aspectRatioenumDefault 16:9
    • 16:9
    • 9:16
    • 1:1
    • 4:3
    • 3:4
    • 21:9
    • 3:2
    • 2:3
    • auto
  • negativePromptstringup to 1000 characters

    What the clip must not show.

  • resolutionenum

    Only a quality the model offers; leave out for its default.

    • 720p
    • 1080p
    • 4k
    • 480p
    • 768p
    • 2k
    • 768P
    • 1080P
    • 480P

Model docs · Summer API docs · Set up the Summer MCP server · Try it in the browser

Questions

What is Grok Imagine Video 1.5 good for in game development?
Grok Imagine Video 1.5 is xAI's video model. It generates clips with sound and placed in the top ten for image to video on the Artificial Analysis video arena in September 2026. In Summer it renders 720p clips from a prompt, a still or up to four reference images. Typical game uses: quick animated social clips for an update or a jam entry; bringing a character illustration to life with sound; combining a character and a setting from reference images.
How much does Grok Imagine Video 1.5 cost in Summer?
In Summer Studio: Grok Imagine Video 1.5 (text to video): 14 credits / second; Grok Imagine Video 1.5 (image to video): 14 credits / second; Grok Imagine Video 1.5 References (reference to video): 15 credits / second. It is charged from your Summer credits.
What can Grok Imagine Video 1.5 generate, and how long are the clips?
In Summer, Grok Imagine Video 1.5 supports text to video, image to video, and reference to video. Generated clips run 5, 6, 8, 10, and 15 seconds, in 16:9, 9:16, 1:1, 4:3, 3:4, 3:2, and 2:3 aspect ratios at 720p and 1080p.
Can I use Grok Imagine Video 1.5 from Claude Code, Cursor or Codex?
Yes. Connect the Summer MCP server to Claude Code, Cursor, Codex or another MCP client, then ask your agent to generate with summer_generate_video with model: "grok-video-1.5". Setup instructions are at summerengine.com/mcp.
Where do Grok Imagine Video 1.5 results go?
Every generation is saved to your Summer asset library. From there you can download it or bring it into a Summer Engine project.