You asked about Data Labeling
679 people built something like it. 118 are gone.
That is 19% of the ones whose fate we could settle, against 23% across the whole register. 69 were acquired.
| Launched | What it was | Today |
|---|---|---|
| 2022-02-01 | ango.ai | still up |
| 2026-09-01 | YCPerit.AI Expert-led data and RL platform for AI labs · perit.ai | still up |
| 2019-01-01 | YCCentaur We Create Superior Data By Making Annotation Competitive · centaur.ai | still up |
| 2022-01-01 | YCSieve The multimodal data lab · sievedata.com | still up |
| 2022-01-01 | YCSpade Spade is the data and AI platform for modern finance. · spade.com | still up |
| 2025-01-01 | Applied research lab curating data solutions for foundation model… · afterquery.com | still up |
| 2020-01-01 | YCAnatomic Real-world healthcare data for medical AI · bikry.com | still up |
| 2024-06-01 | YCSepal AI Data Development for Advanced AI · sepalai.com | acquired |
| 2023-06-01 | Metadata for GenAI workflows · deasylabs.com | acquired |
| 2024-06-01 | YCUnbound Use AI tools without fear of data leakage · getunbound.ai | still up |
| 2025-09-01 | YCSciloop Expert STEM reasoning data for frontier AI labs. · sciloop.dev | still up |
| 2021-06-01 | YCLightly Help ML teams label the right data · lightly.ai | still up |
| 2025-01-01 | Frontier Data · sherpalabs.ai | still up |
| 2026-09-01 | YCEpsilab Long horizon RL environments from real-life data · epsilab.com | still up |
| 2025-06-01 | YCLiva AI Building socially intelligent AI · theliva.ai | still up |
| 2026-01-01 | YCShofo The World's Largest Video Library · shofo.ai | still up |
| 2026-01-01 | Evals, RL environments and training data for creative tasks · ritivel.com | still up |
| 2024-09-01 | Agentic AI for knowledge work · raycaster.ai | still up |
| 2022-01-01 | YCJumpWire Dynamic access controls for all data and databases · jumpwire.io | acquired |
| 2026-06-01 | YCDatoric The training data R&D engine for physical AI · datoric.com | still up |
| 2026-06-01 | YCCoArena The biggest crowdsourced benchmark for Computer-Use · coarena.ai | still up |
| 2026-06-01 | YCMarkov Expert computer-use data for frontier AI labs · markovstudios.com | still up |
| 2026-06-01 | Virtual Reality for Training Robots · movingatoms.ai | still up |
| 2013-01-01 | YCFivetran The leader in automated data movement · fivetran.com | still up |
| 2022-12-02 | sqlfordevs.com | still up |
| 2012-01-01 | Digital Analytics Platform · amplitude.com | acquired |
| 2022-06-01 | equals.app | moved |
| 2022-06-01 | typedream.com | still up |
| 2011-06-01 | YCSegment Software and APIs to collect, clean, and control customer data. · segment.com | acquired |
| 2016-06-01 | YCScale AI Data-centric infrastructure to accelerate the development of AI · scale.com | still up |
| 2009-06-01 | YCMixpanel Mixpanel is event analytics for builders that need answers. · mixpanel.com | still up |
| 2019-06-01 | YCTRM Labs TRM is building a safer world for billions of people. · trmlabs.com | still up |
| 2021-06-14 | routinedb.com | gone |
| 2022-02-11 | boltic.io | still up |
| 2026-09-15 | withcapsule.app | unverified |
| 2022-02-16 | anania.ai | still up |
| 2022-01-10 | databar.ai | still up |
| 2022-01-20 | truesource.io | unverified |
| 2022-11-29 | baserow.io | still up |
| 2022-05-17 | narrative.bi | moved |
| 2022-05-13 | angelmatch.io | unverified |
| 2023-07-23 | cc.dev | still up |
| 2022-04-05 | datagridxl.com | still up |
| 2022-02-22 | uxdatabase.io | unverified |
| 2023-01-05 | clickhouse.com | still up |
| 2022-03-17 | livedocs.com | still up |
| 2022-07-14 | revenuewatcher.com | still up |
| 2022-01-13 | heybooster.ai | still up |
| 2022-04-05 | business.saymine.com | moved |
| 2021-05-05 | csweapons.com | still up |
| 2022-03-23 | spybuster.app | moved |
| 2022-03-29 | cloud.mindsdb.com | unverified |
| 2021-04-20 | manuzoid.com | still up |
| 2022-03-15 | upstash.com | still up |
| 2022-01-26 | tomcritchlow.com | still up |
| 2016-01-01 | AI + Robotics for the Built World · geckorobotics.com | still up |
| 2022-10-13 | polytomic.com | still up |
| 2022-04-27 | directus.io | moved |
| 2023-08-08 | airbyte.com | still up |
| 2022-10-12 | rye.com | still up |
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.
Older launches have had longer to die, so this slope is expected. A year that broke it would mean something is wrong with the checking.
Matched on whole words in the title and description, so a launch can fall into two categories and plenty fall into none.
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.