Company profile · 3 min read
Cardboard: an agentic video editor
Cardboard turns raw footage into editable cuts, captions, reframes, translations and polished exports through an AI-native browser editor.
Cofounder of Lazyweb (a16z Speedrun). Previously grew subscriptions and built native ads at Duolingo. Writes First1000 (90,000+ subscribers).
Published · Updated
What it does
Cardboard is an agentic browser video editor for growth and marketing teams. Users give it footage and a goal, ask for a first cut or variants, search clips by meaning, refine the timeline and export captions, reframes, translations and polished video. The YC profile describes the problem as slow editing and review loops; the current homepage shows the editor and creative utilities.
The fit is a team that has plenty of footage but cannot ship enough short-form, testimonial or launch video. Cardboard is not just a prompt-to-video tool. The useful part is the timeline editor, footage search and collaborative production context around generated cuts.
Why I’d look closer
The product surface is concrete: find quotes, reactions and scenes across long footage; remove dead air; reframe for vertical, square and landscape; generate captions; translate and dub; clean audio; then direct the edit with prompts. Pricing is public. The pricing page lists Creator at $32/month, Pro at $120/month and Teams custom, with usage limits, extra credits from $10 and a three-day trial.
The founder context matches the technical challenge. The YC biographies describe Saksham Aggarwal with AI-product, evaluation and growth experience, and Ishan Sharma with high-performance browser systems, HackerRank and creative-tooling experience. The company says one hour of video can render in about five minutes; that is a company claim worth testing against real footage and export settings.
What I’d ask
How does Cardboard preserve edit decisions, source clips and rights across a generated cut? I’d run one long interview and one multi-format campaign, measure first-cut quality and revision time, and inspect storage, model usage, caption accuracy and team collaboration before moving a production pipeline in.
My editorial take
Cardboard is a strong fit for growth teams whose bottleneck is editing velocity, not idea generation. The browser-native editor and public pricing make a contained test easy. The proof is a faster path to a usable cut without sacrificing editorial control.
Quick facts
| Field | Sourced detail |
|---|---|
| Buyer fit | Growth/marketing teams, serious creators and video editors |
| Public pricing | Creator $32/month; Pro $120/month; Teams custom |
| Core workflow | Search footage, first cut, reframe, captions, translation, audio and export |
| Performance claim | One hour of video rendered in around five minutes; company-stated |
Sources checked
Checked 2026-09-19.
| Source | Used for |
|---|---|
| YC company profile | Product, founders and launch context |
| Cardboard homepage | Current editor/features and performance claim |
| Cardboard pricing | Plans, limits and trial |
| Cardboard blog | Public product/editorial surface |
Cohort context
Cardboard is listed in Winter 2026. In our 2026-09-18 directory snapshot, 126 of 199 listed companies in that cohort have YC’s primary industry label B2B (63.3%). This is a current-directory comparison, not an original intake count or a performance ranking. Nine-cohort dataset.
Public website snapshot
Observed 2026-09-19T16:20:07.007Z in raw homepage HTML. This records visible metadata and advertised links, not agent execution or product quality.
| Signal | Homepage observation |
|---|---|
| Product description metadata | Observed |
| Canonical link | Observed |
| H1 or H2 heading | Observed |
| Typed structured data | Observed |
| Docs/developer link | Not observed in this response |
| Pricing link | Observed |
| llms.txt link | Not observed in this response |
| Markdown alternate | Not observed in this response |
Public observations · Collection method. Missing links here do not establish that a capability or file is absent elsewhere.
About the author
Cofounder of Lazyweb (a16z Speedrun). Previously grew subscriptions and built native ads at Duolingo. Writes First1000 (90,000+ subscribers).
I cofound Lazyweb and publish Mudpie. This is an owner-written publication, not an independent testing organization. Research notes distinguish observations, sourced reporting and editorial judgment.
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