Cardboard

Agentic video editor

Y CombinatorWinter 2026ActiveB2B

What they do

Problem

Growth and marketing teams and serious creators struggle to produce and iterate high-quality videos quickly due to slow agency workflows and lengthy review cycles.

Solution

Cardboard is an agentic, browser-based video editor that uses multimodal LLMs plus WebGPU/WebCodecs to generate a strong first cut from footage and a goal in minutes for rapid iteration.

Who it's for

Growth/marketing teams and serious creators who need to ship videos consistently.

Founders

Saksham Aggarwal

Founder

Saksham Aggarwal is the founder of Cardboard (W26). He studied CS at BITS Pilani and previously built AI products at Iterate AI (EF-backed startup). He has published at ACL and has spoken internationally on AI evaluations. He was the first engineer at PYOR (backed by Coinbase and Castle Island) and worked in growth at Sequoia-backed Flint.

LinkedIn · X

Ishan Sharma

Founder

Ishan Sharma is the founder of Cardboard (W26). He is a full-stack engineer with deep experience in high-performance web systems, creative tooling, and applied AI. Previously, he spent ~4.5 years at HackerRank (S11), where he led multiple 0→1 products used by millions. He started programming in 6th grade and built a Windows app in school that crossed 5.7M+ downloads and was featured on CNET and Softonic

LinkedIn · X