You asked about API

49 people built something like it. 1 is gone.

That is 2% of the ones whose fate we could settle, against 23% across the whole register. 3 were acquired.

Matching
49
Gone
2%
Median life
Acquired
3

Matching launches

checked 9 hours ago · 250 probed today
LaunchedWhat it wasToday
2016-01-01
Building foundational AI for speech transcription and understanding. · deepgram.com
still up
2020-06-01
Power commerce photography with generative AI · photoroom.com
still up
2017-01-01
Document AI. One API Call. · veryfi.com
still up
2021-06-01
One API to get clean data from any website for your AI agents at scale · anakin.io
still up
2017-06-01
The best way to build Voice AI apps · assemblyai.com
still up
2021-01-01
AI Document Understanding API · mindee.com
still up
2021-01-01
Voice AI for developers. · vapi.ai
still up
2022-01-01
Unleashing the potential of DNA and RNA based therapies using AI · whitelabgx.com
still up
2019-01-01
Reshaping industrial quality with AI, hardware, and software · overview.ai
still up
2023-01-01
Our mission is to make Voice AI accessible and useful to all. · play.ai
acquired
2020-01-01
The API to get recordings, transcripts, and metadata from meetings · recall.ai
still up
2020-01-01
AI estimator & agent for remodelers. · handoff.ai
still up
2023-01-01
The AI context platform for private capital. Everything your firm… · metal.ai
still up
2022-06-01
Code-first scrapers and RPAs — built and maintained by AI · intunedhq.com
still up
2025-01-01
AI voice and texting agents · leapingai.com
still up
2022-01-01
Rapid medical data annotation · redbrickai.com
still up
2022-06-01
Customer service AI that resolves requests end-to-end. · typewise.app
still up
2014-01-01
Natural Language for Developers --Wit is an API that makes it easy… · wit.ai
acquired
2024-06-01
Capitol: the sovereign operating system for intelligence. · capitol.ai
still up
2023-01-01
Call every LLM API like it's OpenAI [100+ LLMs] · litellm.ai
still up
2025-06-01
Email Inboxes for AI Agents · agentmail.to
still up
2023-06-01
Open Source AI Agent to automate browser workflows via an API · skyvern.com
still up
2024-01-01
YCego
AI applied research lab building synthetic sapience; human-like AI · egoai.com
still up
2023-06-01
AI-powered insurance verification to boost patient conversion. · soharhealth.com
still up
2023-06-01
The freshest data APIs for AI sales, recruiting, & growth products · fiber.ai
still up
2023-01-01
Usage Metering, AI & API Monetization · openmeter.io
acquired
2024-06-01
Create professional videos in minutes with AI, online or via API · videogen.io
still up
2019-01-01
Cosmic is an AI-powered headless CMS · cosmicjs.com
still up
2025-06-01
Frontier AI for Actuaries · tesora.ai
still up
2025-09-01
AI that creates and runs ads, end-end · trylapis.com
still up
2022-06-01
AI-powered private equity intelligence. · capix.ai
still up
2026-06-01
OpenRouter for Voice AI: one API, every call on the best speech model · speko.ai
still up
2022-06-01
API for Retrieval Augmented Generation · superpowered.ai
gone
2023-06-01
The API for LLM tool use · opentools.com
still up
2024-01-01
High precision AI weather models · precip.ai
still up
2022-06-01
AI messaging API for smarter, faster communication. · apps.apple.com
still up
2023-01-01
AI Agent for Billpay platforms to pay invoices with virtual cards · mercoa.com
still up
2022-01-01
AI Search for the Next Generation · andiai.com
still up
2023-06-01
Cursor for AI Agents · minded.com
still up
2024-01-01
AI media creation platform for creators and developers · magichour.ai
still up
2025-01-01
AI documentation engineer – test & autoimprove stale product docs · quantstruct.com
still up
2026-01-01
Self-tuning file search for AI agents · captain.dev
still up
2025-09-01
Real-time web intelligence API for AI agents and GTM teams · thehog.ai
still up
2025-09-01
API for parsing multimodal unstructured data · unsiloed.ai
still up
2024-06-01
Turn any website into an API. · expand.ai
still up
2026-06-01
API sandboxes, built for AI agents · archal.ai
still up
2026-06-01
We give AI agents realtime web context via API · context.dev
still up
2019-06-01
AI platform accelerating therapies for rare & inflammatory diseases. · gen1e.com
still up
2026-06-01
AI-native back-office for banks and fintechs · rapidfolio.com
still up

How this compares

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.