ACTx486 turns a podcast or video into a responsive AI conversation

Karina Nguyen and Jakub Zegzulka built the research demo around synthetic versions of Elon Musk and Joe Rogan, with generated dialogue labeled on screen.

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Why it matters

ACTx486 makes the appeal and risk of interactive synthetic media visible in the same demo: viewers can steer familiar people through new scenes, while the team acknowledges that responses take minutes and its safeguards remain incomplete.

A person interacts conversationally with a large, glowing screen displaying a dynamic interface with text and video elements in a modern workspace.

Karina Nguyen (@karinanguyen) and Jakub Zegzulka (@jakubzegzulka) introduced ACTx486 on September 23rd, a research demo that lets viewers interrupt a podcast, ask questions and direct changes to the scene. The exchanges shown so far were generated in advance, and a complete turn takes minutes.

https://x.com/karinanguyen/status/2102806675174687176…

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