Pika H3 Flex

Pika returned with an open-weight model built for iteration. H3 Flex is Pika's post-training of MiniMax-H3, released as adapters on Hugging Face over the H3 base, and it debuted as the top open-weight model on DesignArena's text-to-video board. It generates video with synchronized sound, exports the audio as separate stems, goes up to 4K, and runs faster than real time: a 15-second clip with its soundtrack in as little as seven seconds.

The open weights paid off within a day, when Hugging Face's AK built a Turbo LoRA for two-step drafts, with four-step fast and eight-step HD variants for ComfyUI and Diffusers, and Pika took it into its own Hugging Face organization. The model reached Pika's creation platform on November 4. Three years after Pika 1.0 made AI video feel approachable in a browser, the company that had been a consumer app was competing on speed and open weights, the same H3 base that fal had pushed to real-time streaming. The weights carry MiniMax's community license for the base model, which leaves out the US, the EU, the UK and South Korea.