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Native audio with multilingual lip sync, written straight into the prompt.

Examples

Real outputs of video/happy-horse-1.1, each with the input that made it.

From a picture: She draws the katana in one fluid motion and spins into a slow-motion sweeping cut; rain droplets burst away from the blade and her hair and sash swirl; she finishes in a poised…

Prompt: A cheerful cartoon fox girl adventurer in a green scarf skips across a sunny meadow toward the camera, waves and laughs, soft 3D animated film style, gentle camera push in

From a picture: She turns her head toward the camera, the falcon on her shoulder ruffles its feathers, a light breeze moves her braid, slow push in

Best for

  • Talking NPC and narrator clips with lines written in the prompt.
  • Character intros for trailers in several languages.
  • Animating a portrait that speaks one line of dialogue.

Price

$0.14 per second, counted from duration. Exact list price: 0.14 USD. At the default duration of 5 seconds: $0.70. No markup: this is the provider’s list price, checked 2026-09-26. A failed job costs nothing. Get the exact price of one request, free and without a key, from POST /v1/estimate.

Example call

Sign in once with summer login; over HTTP, send Authorization: Bearer $SUMMER_TOKEN after export SUMMER_TOKEN=$(summer token) (sign-in). This job takes minutes. The CLI follows it and saves the file. Over HTTP the call answers running with a job id: check GET /v1/jobs/{id} until state is done (jobs); the quickstart has the full loop.
The finished job has state "done" and result.assets: one entry per file, each with assetId, fileUrl (a Summer URL) and thumbnailUrl. Download the file into your project, or import it in Summer Engine by its asset id.

Input

Send these fields in input. The full JSON Schema is inputSchema in GET /v1/models/video/happy-horse-1.1.

For agents

This page as Markdown: https://docs.summerengine.com/api/models/video/happy-horse-1-1.md. The live record with the JSON Schema: GET https://www.summerengine.com/v1/models/video/happy-horse-1.1, public, no sign-in.