You asked about AI Assistant
327 people built something like it. 41 are gone.
That is 14% of the ones whose fate we could settle, against 23% across the whole register. 33 were acquired.
| Launched | What it was | Today |
|---|---|---|
| 2023-06-01 | Intelligence that runs your operations. · happyrobot.ai | still up |
| 2023-01-01 | YCYuma AI The AI Support Agent for Ecommerce · yuma.ai | still up |
| 2023-06-01 | YCkapa.ai The fastest way to build AI assistants on technical content · kapa.ai | still up |
| 2023-01-01 | YCFloworks Hire the best AI Sales employees | AI SDR | AI RevOps | AI EA · floworks.ai | still up |
| 2023-06-01 | YCElyos AI AI Customer Service Agents for trades and field services · elyos.ai | still up |
| 2023-01-01 | YCloopfour Workflow automation, without AI hallucinations. · loopfour.com | still up |
| 2023-01-01 | YCInkeep Build AI Agent teammates and automations in code or no-code · inkeep.com | still up |
| 2023-06-01 | AI that audits AI — catching hallucinations before you ship them. · energent.ai | still up |
| 2023-06-01 | Metadata for GenAI workflows · deasylabs.com | acquired |
| 2023-01-01 | Discover new opportunities (jobs, deals, investors) · alphawatch.ai | still up |
| 2023-06-01 | YCSerra Your 24/7 AI Recruiter · serra.io | still up |
| 2023-01-01 | Decision infrastructure for investment firms · withbenchmark.com | still up |
| 2023-01-01 | YCUnify AI teammates for everyone else 🤖 · unify.ai | still up |
| 2023-01-01 | YCLynx AI platform for investigating and resolving engineering incidents · uselynx.ai | gone |
| 2023-06-01 | Shopify for Homebuilders · buildwithfoundation.com | still up |
| 2023-06-01 | YCKino AI Kino is an AI media manager and video editor for humans and agents. · kino.ai | still up |
| 2023-01-01 | YCUpfront A personal assistant for every homeowner · tryupfront.com | gone |
| 2023-01-01 | YCFrigade AI-powered product assistance for modern software teams · frigade.com | still up |
| 2023-01-01 | YCBrewit Conversational data analytics for every team · brewit.ai | acquired |
| 2023-06-01 | YCSweep The best AI coding assistant for JetBrains · sweep.dev | still up |
| 2023-06-01 | AI Voice and SMS Agents for Healthcare · wattsonhealth.com | still up |
| 2023-01-01 | YCFactIQ Investment research data for AI agents · factiq.com | still up |
| 2023-06-01 | AI back office for food product quality teams · cognitioiq.com | still up |
| 2023-01-01 | AI assisted documentation for PT/OT/SLP · gethipposcribe.com | still up |
| 2023-01-01 | YCMaxi AI Agent for your personal finances · usemaxi.app | still up |
| 2023-06-01 | YCMinded Cursor for AI Agents · minded.com | still up |
| 2023-01-01 | YCLinkGrep AI browser copilot for teams · linkgrep.com | still up |
| 2023-01-01 | YCSage AI Your self-generating, self-maintaining code knowledge base. · sage-ai.dev | still up |
| 2023-01-01 | YCco.dev Turn your ideas into full-stack apps · co.dev | still up |
| 2023-06-01 | YCKhoj AI for humans · khoj.dev | still up |
| 2023-01-01 | AI RCM assistant that handles any insurance task on payer portals for… · pledge.health | still up |
| 2023-01-01 | AI assistant for customer support · growparabolic.com | gone |
| 2023-01-01 | YCPylon The Agentic Support Platform purpose-built for B2B. · usepylon.com | still up |
| 2023-01-01 | YCNumeral The AI-native sales tax solution. · numeral.com | still up |
| 2023-06-01 | YCCampfire The AI Native ERP for the fastest growing companies. · campfire.ai | still up |
| 2023-01-01 | YCAvoca AI-powered Sales Agent for Service-Based Industries · avoca.ai | still up |
| 2023-01-01 | YCHadrius Automating Securities Compliance · hadrius.com | still up |
| 2023-01-01 | YCWarp AI-native Employee Management Platform for High-Growth Companies · warp.co | still up |
| 2023-06-01 | End-to-end content, learning, & deal intelligence for B2B sales teams · letter.ai | still up |
| 2023-06-01 | YCBland AI The enterprise platform for AI phone calls · bland.com | still up |
| 2023-01-01 | YCStackAI The Enterprise AI Transformation Platform · stackai.com | acquired |
| 2023-01-01 | YCOnshore AI for corporate tax · onshore.com | still up |
| 2023-06-01 | YCLangdock The all-in-one AI platform for companies. · langdock.com | still up |
| 2023-06-01 | Digital-native home painting franchise · craftwork.com | still up |
| 2023-06-01 | AI patent drafting, prosecution, litigation and more for legal teams. · solveintelligence.com | still up |
| 2023-06-01 | YCVetRec AI Scribe for veterinarians. Saving time and improving patient care. · vetrec.io | still up |
| 2023-01-01 | YCResend Email for developers · resend.com | still up |
| 2023-01-01 | YCPirros AI Platform for Architects and Engineers · pirros.com | still up |
| 2023-06-01 | B2B debt collection powered by AI agents · agentcollect.com | still up |
| 2023-01-01 | YCSalient AI Servicing for Auto Lenders · trysalient.com | still up |
| 2023-01-01 | AI-based full stack observability platform · middleware.io | still up |
| 2023-01-01 | YCVooma Automation platform for logistics · vooma.ai | still up |
| 2023-01-01 | AI-powered care for seniors with chronic disease · kivohealth.com | still up |
| 2023-06-01 | YCHyLight Unmanned airships for inspecting our critical assets · hylight.aero | still up |
| 2023-01-01 | YCPlayAI Our mission is to make Voice AI accessible and useful to all. · play.ai | acquired |
| 2023-06-01 | AI-native operations for the banks · bretton.com | still up |
| 2023-06-01 | YCGiga AI Support Agent for Enterprises. · giga.ai | still up |
| 2023-06-01 | Revenue Activation Platform · hyperbound.ai | still up |
| 2023-06-01 | AI Operating System for Private Market Investors · vectorshift.ai | still up |
| 2023-01-01 | YCPeeba Risk-free wholesale for retailers across Southeast Asia · peeba.com | gone |
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.