Cardboard

Cardboard is an AI-powered video editing platform designed to dramatically reduce the time it takes to turn raw footage into finished videos. This launch marks its arrival as a native Mac app for Apple Silicon, alongside the existing browser version that runs in Chrome . The pitch for operators and creators is simple: describe your edit and Cardboard cuts, captions, reframes, and composes it , pulling from talking heads, screen recordings, screenshots, and B-roll in a single pass. The product sits in the agentic-editor category, aiming to collapse the workflow that normally lives in Premiere Pro or DaVinci Resolve into natural-language prompts. It interprets natural language instructions and maps them to complex timeline operations automatically, from trimming silences and adding captions to reframing speakers and composing layouts. The Mac release is positioned as free to try, with the launch video itself edited inside Cardboard as a proof point. Cardboard was founded in 2025 by Saksham Aggarwal and Ishan Sharma as part of Y Combinator's W26 batch , with Saksham previously co-founder and CTO of Iterate AI (backed by EF) . The timing matters because short-form video has become table stakes for founder-led distribution, and the team is betting that marketing, growth, and content operators would rather prompt an agent than learn a timeline.