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Pika H3 Flex

Pika H3 Flex is a short-clip video model that renders picture and stereo audio together. It is a post-trained build on MiniMax H3: six denoising steps, five, ten or fifteen seconds at 24 fps, native 480p or 768p with 1080p, 2K and 4K available by upscaling, and inputs that accept a written prompt, a first frame, a last frame or both. Dialogue, music, effects and ambience are generated with the frames, so a finished clip needs no separate sound pass. Exports are MP4 with no watermark, credits are charged by the second of output, and any run that fails returns its credits, which keeps experimentation cheap.

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