Pika H3 turns a prompt, a first frame, or a few reference files into a short video clip in the browser. It is built for creators and product teams who want a moving draft before a full production pass: describe the scene, set aspect ratio, resolution and duration, then review the take. According to the product page, clips run 5-15 seconds at 480p or 768p, image-to-video takes an optional last frame, and reference-to-video combines up to 12 files.