You asked about Deep Learning
58 people built something like it. 6 are gone.
That is 11% of the ones whose fate we could settle, against 23% across the whole register. 1 were acquired.
| Launched | What it was | Today |
|---|---|---|
| 2023-01-01 | Generative AI for protein design · diffuse.bio | still up |
| 2023-06-01 | YCCedana Fast, reliable, reproducible AI with GPU live migration · cedana.ai | still up |
| 2023-06-01 | Infuse knowledge into language models with just 10 samples · automorphic.ai | still up |
| 2023-07-30 | pyflo.net | still up |
| 2023-10-19 | learnhouse.app | still up |
| 2023-10-29 | kimchi-reader.app | still up |
| 2023-01-31 | mindlygames.com | still up |
| 2023-05-22 | vimninja.com | still up |
| 2023-06-01 | End-to-end content, learning, & deal intelligence for B2B sales teams · letter.ai | still up |
| 2023-03-28 | floutwork.com | still up |
| 2023-06-01 | YCCasca Make Banking Magical · cascading.ai | still up |
| 2023-01-30 | deepreview.eu | unverified |
| 2023-06-01 | Revenue Activation Platform · hyperbound.ai | still up |
| 2023-01-01 | YC222 the AI social facilitator for offline human to human interactions · 222.place | still up |
| 2023-02-16 | jinbupal.com | still up |
| 2023-01-01 | YCloopfour Workflow automation, without AI hallucinations. · loopfour.com | still up |
| 2023-01-01 | AI-Powered Super Mentor for Test Prep · superkalam.com | still up |
| 2023-05-24 | yakread.com | still up |
| 2023-06-01 | YCNumen Engineering a future without cancer deaths. · numen.com | still up |
| 2023-06-01 | YCFlint Personalized learning built for schools · flintk12.com | still up |
| 2023-04-06 | koodup.com | still up |
| 2023-01-01 | Automating Healthcare Revenue Cycle Management with AI Workforce · combinehealth.ai | still up |
| 2023-03-20 | go-testdeep.zetta.rocks | still up |
| 2023-12-30 | 65words.com | unverified |
| 2023-12-31 | darkgen.app | unverified |
| 2023-01-01 | YCinBuild Workflow Automation for Construction Finance · inbuild.ai | still up |
| 2023-01-01 | YCCosine Fully Agentic SWE · cosine.sh | still up |
| 2023-06-01 | Autonomous surgical robots · andromedasurgical.com | still up |
| 2023-10-15 | ytclass.co | still up |
| 2023-01-01 | Performance-Optimized Influencer Marketing at Scale · 1stcollab.com | still up |
| 2023-01-01 | YCScanbase The API for Diagnostic Test Analysis (COVID-19, FLU, RSV, STD,… · scanbase.com | still up |
| 2023-01-01 | YCPierre Pierre is a new, opinionated, git platform. · pierre.co | still up |
| 2023-01-01 | YCBoundary The programming language for AI · boundaryml.com | still up |
| 2023-07-28 | heimdallapp.org | unverified |
| 2023-10-19 | sievedata.com | moved |
| 2023-01-01 | The TikTok style corporate training platform · goodcourse.co | gone |
| 2023-04-28 | sotai.ai | gone |
| 2023-06-01 | YCSubsets AI-driven Retention Automation for subscription media businesses. · subsets.com | still up |
| 2023-08-08 | deepfakes.lol | gone |
| 2023-06-01 | YCGuac AI-powered forecasting & replenishment for grocery · guac.com | still up |
| 2023-07-27 | justinmath.com | still up |
| 2023-05-19 | deepnotes.app | still up |
| 2023-01-01 | YCLuca The Modern Pricing Engine for Retail · askluca.com | gone |
| 2023-03-09 | deepai.org | still up |
| 2023-01-01 | Developing long-lasting drug formulations 50% faster · persist-ai.com | still up |
| 2023-06-01 | The AI-powered risk decision platform · trycatamaran.com | acquired |
| 2023-10-11 | yakihonne.com | still up |
| 2023-04-22 | heyoctopus.com | still up |
| 2023-06-01 | YCStuddy An AI math tutor for every student · studdy.ai | still up |
| 2023-01-01 | Dataset Management for AI Trainers · truthsuite.com | still up |
| 2023-01-01 | YCAriglad Knowledge base maintenance on auto-pilot · ariglad.com | still up |
| 2023-06-01 | Don't die of heart disease. Empirical is the first AI-native heart… · empirical.health | still up |
| 2023-06-01 | YCPropRise The AI platform for CRE investment teams · proprise.ai | still up |
| 2023-06-01 | YCTrainy Infrastructure for managing GPU clusters for training/serving. · trainy.ai | still up |
| 2023-01-01 | YCVelos Platform to automate manual back-office work · tryvelos.com | still up |
| 2023-01-01 | AI for drug formulation · lavo.ai | gone |
| 2023-06-01 | Learn language with real-world content, at your level · readbean.app | still up |
| 2023-01-01 | Language learning with a conversational AI Tutor · univerbal.app | still up |
| 2023-01-01 | YCPair AI Reimagining education with short form video and AI · pairai.com | still up |
| 2023-06-01 | Affordable carbon tracking solution for all businesses · greentally.ai | gone |
How this compares
Y Combinator reports its own outcomes, including acquisitions. The other two are judged by asking the domain, so they are not measured the same way and are never averaged together.
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.