You asked about Conversational AI
81 people built something like it. 81 are gone.
That is 100% of the ones whose fate we could settle, against 23% across the whole register. Half of the gone ones were last seen within 19 months of launching.
| Launched | What it was | Today |
|---|---|---|
| 2021-06-01 | YCOpkit AI phone calls for the US healthcare industry · opkit.co | gone |
| 2021-06-26 | cq.mtc.dev | gone |
| 2021-10-03 | spotml.io | gone |
| 2021-03-31 | threethingsdaily.xyz | gone |
| 2021-06-25 | sirendns.com | gone |
| 2021-07-12 | silverdial.org | gone |
| 2021-07-30 | volantai.org | gone |
| 2021-09-03 | examples.jina.ai | gone |
| 2021-01-01 | YCAXAR AI Multi-agent orchestration platform · axar.ai | gone |
| 2021-01-01 | Plaid for Southeast Asia · finantier.co | gone |
| 2021-10-04 | fuelfinder.uk | gone |
| 2021-01-16 | herogateapp.com | gone~11mo |
| 2021-04-11 | muil.io | gone |
| 2021-01-01 | Largest B2B eCommerce platform for SMBs in Latin America. · boitas.com | gone |
| 2021-06-01 | YCPerfekto Grocery subscription service against food waste in Latam · perfekto.mx | gone |
| 2021-10-06 | iko.ai | gone |
| 2021-11-29 | background.webcam | gone |
| 2021-10-13 | ttgpapp.com | gone |
| 2021-11-24 | airgram.io | gone |
| 2021-01-27 | creart.innovrepublic.com | gone |
| 2021-01-30 | etherlearn.cryptizens.io | gone |
| 2021-04-10 | cardanocubes.com | gone |
| 2021-03-05 | nextails.com | gone |
| 2021-08-05 | makeai.art | gone |
| 2021-01-01 | Embed NL-to-SQL into your Product 📈 · dataherald.com | gone |
| 2021-02-25 | peerideas.com | gone~19mo |
| 2021-06-01 | YCMine The AI personal finance company. · usemine.com | gone |
| 2021-09-27 | thedailyminijournal.xyz | gone |
| 2021-07-13 | everlint.com | gone |
| 2021-01-07 | uniqueaiart.com | gone~35mo |
| 2021-05-23 | coinsabouttomoon.com | gone |
| 2021-04-20 | ourmoon.jatan.space | gone |
| 2021-11-28 | leafblower.fly.dev | gone |
| 2021-01-01 | YCQueenly Leading marketplace for formalwear · queenly.com | gone |
| 2021-06-01 | Personal gaming coach for PC gamers globally · senpai.gg | gone |
| 2021-06-01 | YCHeimdal Affordable and verified direct air carbon capture and storage · heimdalccu.com | gone |
| 2021-06-19 | magpie-maps.com | gone |
| 2021-01-17 | winfantasy.ai | gone~20mo |
| 2021-01-02 | mistralcss.com | gone~20mo |
| 2021-07-23 | ecocatalogue.directory | gone |
| 2021-09-28 | aikido.finance | gone |
| 2021-01-01 | Thought-to-Language AI Models · mindportal.com | gone |
| 2021-06-01 | AI-Driven Tech & Space Optimization to Scale Restaurants · onestopkitchen.com | gone |
| 2021-02-22 | magiclogin.net | gone~19mo |
| 2021-04-07 | uglot.ai | gone |
| 2021-06-01 | Never code alone. · squire.ai | gone |
| 2021-07-10 | canyouguess.art | gone |
| 2021-02-22 | clipplayground.co | gone~22mo |
| 2021-10-05 | cicero.ly | gone |
| 2021-01-16 | mailswype.io | gone~7mo |
| 2021-08-13 | modelmaster.io | gone |
| 2021-02-03 | meet.airconsole.com | gone~22mo |
| 2021-01-01 | YCNoya Radically reducing capital costs and build time for direct air capture · noya.co | gone |
| 2021-01-01 | DoF provides a high quality, affordable higher education alternative. · degreesoffreedom.org | gone |
| 2021-09-03 | weddingrainchecker.com | gone |
| 2021-03-08 | caint.casa | gone |
| 2021-03-24 | brainrain.app | gone |
| 2021-09-10 | acolytehq.com | gone |
| 2021-01-01 | YCGonddo Wholesale marketplace for independent retailers buy & manage inventory · gonddo.com.br | gone |
| 2021-01-14 | thumb.yt | gone~12mo |
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.