OpenRouter / Generate video

Generates a short video from a text prompt (and optional first or last frame image) with one of 20 video models on OpenRouter: Google Veo 3.1 (full, fast, lite), Kling v3.0 and o1, Wan 2.6 to 3.0, Hailuo, Grok Imagine Video, Runway Gen-4.5, HappyHorse, FLUX 3 video. Asynchronous: submit, then looot polls until the video is ready (usually 30 s to 5 min). duration is required (1 to 10 s) and each model accepts only some values (Veo 4, 6 or 8; Kling 3 to 15; Hailuo 5 or more); a value the model refuses costs nothing. Returns signed download links and usage with the exact cost. Charged at OpenRouter's reported cost plus its 5.5% credit fee; a failed job costs nothing.