You asked about Market Research
39 people built something like it. 1 is gone.
That is 3% of the ones whose fate we could settle, against 23% across the whole register.
| Launched | What it was | Today |
|---|---|---|
| 2025-01-01 | We build networks of AIs to simulate high-value audiences · societies.io | still up |
| 2025-06-01 | YCTheora Building medical school for AI Agents · theorahq.com | still up |
| 2025-09-01 | AI-powered market due diligence for investment decisions · diligencesquared.com | still up |
| 2025-06-01 | YCMotives Consumer focus groups run by AI · motives.ai | still up |
| 2025-01-01 | Applied research lab curating data solutions for foundation model… · afterquery.com | still up |
| 2025-09-01 | YCUplane Replace marketing agencies with AI · uplane.com | still up |
| 2025-06-01 | YCF2 The AI platform for private markets investors · f2.ai | still up |
| 2025-01-01 | YCAthenaHQ Be the Answer in AI Search - AI SEO across SEO, GEO & AEO · athenahq.ai | still up |
| 2025-06-01 | YCReacher We automate creator marketing for the world's largest brands · reacherapp.com | still up |
| 2025-06-01 | We help products get discovered & used by AI agents. · promptingcompany.com | still up |
| 2025-06-01 | YCGolpo Create Whiteboard Explainer Videos with AI from a Prompt or Document · video.golpoai.com | still up |
| 2025-09-01 | YCSellRaze The fastest way to sell online. · sellraze.com | still up |
| 2025-01-01 | YCTrata AI-powered research desk for hedge funds · trytrata.com | still up |
| 2025-01-01 | More 𝛼, less latency: exchange and HFT on one chip. · pax.markets | still up |
| 2025-09-01 | YCAbsurd The Creative OS for AI video · absurd.com | still up |
| 2025-09-01 | YCSciloop Expert STEM reasoning data for frontier AI labs. · sciloop.dev | still up |
| 2025-09-01 | Infrastructure for AI labs to focus on research. · sf-tensor.com | still up |
| 2025-09-01 | YCSorce Tinder for jobs · sorce.jobs | still up |
| 2025-09-01 | We reverse engineer B2B growth, starting with LinkedIn. · imagineai.me | still up |
| 2025-09-01 | YCLapis AI that creates and runs ads, end-end · trylapis.com | still up |
| 2025-01-01 | YCNitrode Frontier AI research to advance game development · nitrode.com | still up |
| 2025-09-01 | The mid-market agent platform · heylua.ai | still up |
| 2025-06-01 | YCLiva AI Audio & Video Data · theliva.ai | still up |
| 2025-09-01 | YCZarna AI Associates for Middle-Market Private Equity · zarnaai.com | still up |
| 2025-01-01 | YCFira Financial research platform for investment firms · firaresearch.com | still up |
| 2025-01-01 | YCMisprint Misprint is building Robinhood for Pokemon cards · misprint.com | still up |
| 2025-09-01 | Trade Anything · freeportmarkets.com | still up |
| 2025-01-01 | Real-time AI translator for global sales and marketing · cuckoo.so | still up |
| 2025-09-01 | YCDome A unified API for prediction markets, like Kalshi and Polymarket · domeapi.io | gone |
| 2025-09-01 | YCMiniswap The Marketplace for Complex Hobbies · miniswap.gg | still up |
| 2025-01-01 | YCRetrofit A vintage marketplace curated by AI · retrofit.shop | still up |
| 2025-06-01 | YCKalinda Deep research for class action law firms · kalinda.ai | still up |
| 2025-01-01 | YCKarsa Stablecoin neobank for emerging markets · gokarsa.com | still up |
| 2025-09-01 | YCThe Hog Real-time web intelligence API for AI agents and GTM teams · thehog.ai | still up |
| 2025-09-01 | YCBluma Canva for short-form video ads · getbluma.com | still up |
| 2025-09-01 | AI agents on real phones, growing brands across every platform. · tellif.ai | still up |
| 2025-01-01 | YCBezel Digital AI humans that model clothes for e-commerce brands. · trybezel.com | still up |
| 2025-06-01 | YCBizzy AI Bizzy works 24/7 so you never miss a lead. · usebizzy.com | still up |
| 2025-01-01 | YCWildcard AEO/GEO for E-Commerce and Retail · wild-card.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.