Pika H3 Flex Audio Stems

Separate up to 120 seconds of source audio or video into Dialogue, Score, SFX, Foley and Ambience. Supply a source Flex request ID or an input URL. Returns a ZIP with WAV files and a manifest. Stereo and mono both cost $0.001 per total output stem second: five 10-second stems cost $0.05. The final charge uses the sum of decoded WAV durations.