Make explainer videos for any article on the fly
Scrimba plugged an LLM into its interactive video format and built HN.watch, which generates explainer videos for HN posts.
Give students a Socratic AI tutor on a personal learning path
A former teacher’s startup diagnoses K-12 skill gaps and pairs adaptive lessons with an AI tutor that guides without giving away answers.
- Difficulty
- BeginnerOur rating
- Time to build
- Not reportedOur estimate
- Monthly cost
- Not reported
- Revenue
- Not reportedWe only show revenue the source states
- Engagement
- 102 HN points107 comments · fetched Oct 15, 2026
What they did
Students are placed on personalized paths in math, ELA and writing with standards-aligned lessons.
How it went
Launched on HN (YC S26).
Worth knowing
This is the builder launching their own product on HN.
Builder recipe
Our own starting point, written from the source. Adapt it to your setup.
Stack
- Bloomy
Steps
- Pick one concept to learn or teach.
- Have the agent build or explain it step by step.
- Test your understanding by changing parameters or asking why.
- Iterate.
Starter prompt
Tags
Read the original
- Hacker News: news.ycombinator.com/item?id=48981136 ↗ (opens in new tab) Jul 20, 2026 · 102 points, 107 comments (fetched 2026-10-15)
- Web: bloomylearning.com ↗ (opens in new tab) Jul 20, 2026
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