You asked about Machine Learning
33 people built something like it. 0 are gone.
That is 0% of the ones whose fate we could settle, against 23% across the whole register.
| Launched | What it was | Today |
|---|---|---|
| 2025-01-01 | YCMundo AI High Quality Multilingual Training Data for AI Models · mundoai.world | still up |
| 2025-09-01 | Agentic AI for Society Builders · brickanta.com | still up |
| 2025-09-01 | Your Company Brain · hyperspell.com | still up |
| 2025-06-01 | Analyze any footage, without training a model · ondeckai.com | still up |
| 2025-01-01 | YCOsmosis Reinforcement Learning (RL) for AI Agents · osmosis.ai | still up |
| 2025-09-01 | YCAllus AI Transforming manufacturing with our next-gen Vision Foundation Model · allus.ai | still up |
| 2025-01-01 | YCNitrode Frontier AI research to advance game development · nitrode.com | still up |
| 2025-06-01 | YCLilac We sell GPUs. · getlilac.com | still up |
| 2025-06-01 | AI powered brokerage reducing residential rental commissions in NYC… · spotlight.realty | still up |
| 2025-01-01 | Foundation models to automate x-ray analysis for radiologists · mecha-health.ai | still up |
| 2025-06-01 | Robots, parts & RL envs & evals - delivered in 48 hrs / pickup in SF. · roboticscenter.ai | still up |
| 2025-09-01 | YCThesis Humanoid robots · thesislabs.ai | still up |
| 2025-09-01 | YCAmika Infra to build your own software factory · amika.dev | still up |
| 2025-01-01 | YCBezel Digital AI humans that model clothes for e-commerce brands. · trybezel.com | still up |
| 2025-01-01 | YCHUD Platform for building RL environments and evals · hud.ai | still up |
| 2025-06-01 | YCidler Hill-climb any benchmark, for any model, in any domain. · idler.ai | still up |
| 2025-06-01 | YCGolpo Create Whiteboard Explainer Videos with AI from a Prompt or Document · video.golpoai.com | still up |
| 2025-01-01 | Reasoning Fine-Tuning · trainloop.ai | still up |
| 2025-01-01 | AI-driven exam prep · alice.tech | still up |
| 2025-01-01 | YCEdexia AI Teacher Assistant for Grading Essays · edexia.com | still up |
| 2025-01-01 | AI tutor starting with maths and science · excellence-ai.com | still up |
| 2025-09-01 | Training Data for Recursive Self-Improvement · hillclimb.com | still up |
| 2025-09-01 | Large-scale real-world robot & human data for embodied AI · cortexrobot.ai | still up |
| 2025-09-01 | YCParrot TikTok for language learning · parrotapp.com | still up |
| 2025-06-01 | YCMonte Continual Learning for Agents · trymonte.ai | still up |
| 2025-06-01 | YCMaximal Truckload Planning at Machine Precision · trymaximal.com | still up |
| 2025-01-01 | AI tutors for exam prep · miyagilabs.ai | still up |
| 2025-09-01 | The first platform where families can create AI cartoons in minutes · pixleyai.com | still up |
| 2025-01-01 | AI Agents that automate enterprise software processes · agentin.ai | still up |
| 2025-06-01 | Physics-based foundation models for CAD optimization. · topological.com | still up |
| 2025-06-01 | Waymo for excavators · useflywheel.ai | still up |
| 2025-06-01 | Self learning computer use agent for developers · cyberdesk.io | still up |
| 2025-01-01 | Reimagining how Machines Learn · lucidic.ai | still up |
How this compares
The register re-probes every domain it holds. Some that answered last month stop answering. We send that list — what went quiet, and what it was — once a month. Nothing else.
How this was made. Show HN entries are every post from 2021 to 2023 with at least five points that linked to its own domain; code hosts and free hosting are excluded, because a repository outlives the effort behind it. Product Hunt entries needed 100 votes — a far higher bar, so they are the promoted top slice rather than a like-for-like sample. Both are judged by asking the domain whether it still answers: gone means it no longer resolves, refuses the connection, serves a parking page, or says plainly that it shut down. An HTTP error is not counted as gone — a server answering 404 is one somebody still pays for, and an audit of 25 gone-calls found two such sites alive with only a moved homepage. Y Combinator entries use the status YC publishes itself, which is why only those can say acquired. Squatted domains — a lapsed name now serving somebody else's site — are not detected, so these figures run slightly low.