45 Y Combinator companies with a founder who worked at Airbnb before.
Updated weekly, last on November 9, 2026. Roster from Y Combinator's public directory.
| Company | Batch | Team | 6 mo | 12 mo | Open roles | Total raised | Last round |
|---|---|---|---|---|---|---|---|
Buy, sell, and manage cryptocurrencies. | S12Public | 6,979 | −5% | −6% | 91 | ||
The future of B2B spend | S20 | 1,421 | +13% | +38% | 3 | $371M | Series D$190M, Oct 2024 |
The Agentic Support Platform purpose-built for B2B. | W23 | 183 | +15% | +81% | 3 | $51.3M | Series B$31M, Aug 2025 |
The AI-native sales tax solution. | W23 | 173 | +25% | +63% | 2 | $158M | Series C$100M, Sep 2026 |
Instrumentl automates grant discovery and management for nonprofits. | S16 | 121 | +6% | +9% | 1 | $55M | Private equity$55M, Apr 2025 |
Modernizing commercial insurance | W21 | 107 | +11% | +43% | 17 | $61.6M | Series B$42M, Mar 2026 |
Crypto-currency trading platform. | S14 | 95 | +3% | +3% | 0 | $23.1M | Series B$23M, Mar 2025 |
Decarbonizing the fashion industry | S21 | 45 | +5% | +10% | 3 | $17.1M | Series A$15M, Apr 2024 |
Data analytics software for biomanufacturing. | W22 | 38 | −12% | −24% | YC | $20.6M | Seed$20.1M, Jul 2024 |
Production-ready document processing | W23 | 37 | +42% | +131% | 0 | $17.5M | Series A$17M, Jun 2025 |
The Computer Science Proficiency Assessment (CSPA™) is a… | S18Acquired | 34 | +3% | +3% | 0 | $1.6M | Seed$1.5M, Sep 2018 |
AI enabled marketplace matching trucks with jobs | S23 | 33 | +18% | +27% | 2 | $15.5M | Series A$15M, Oct 2025 |
| W21 | 33 | +22% | +27% | YC | $5.3M | Seed$5.2M, Jul 2023 | |
Open Source CRM | S23 | 31 | −6% | −9% | YC | $5M | Seed$5M, Nov 2024 |
Making motherhood safe, not scary | S22 | 29 | +38% | +107% | 2 | $13.6M | Seed$9.2M, Mar 2026 |
AI agents for risk, compliance, and safety | S23 | 20 | −13% | −9% | YC | $32.1M | Series A$27.2M, Apr 2025 |
Your Personal AI for everyday work. Lives in your texts. | F25 | 13 | +86% | 0 | $500K | YC investment$500K, Dec 2025 | |
Your Company Brain | F25 | 11 | +83% | +120% | YC | $7.1M | Seed$7.1M, Dec 2025 |
AI-voice agents that are indistinguishable from humans. | W24 | 10 | −33% | −50% | 0 | $500K | YC investment$500K, Mar 2024 |
Supercharge your mobile apps | W21Acquired | 10 | 0% | +11% | 0 | $1.7M | Seed$1.7M, Nov 2021 |
Flight search engine using credit card points and miles | S23 | 9 | +13% | +13% | YC | $500K | YC investment$500K, Sep 2023 |
Marketing automation for the modern world | W22 | 8 | −11% | −27% | 0 | Undisclosed roundJan 2025 | |
Product design tool that lets everyone design like a designer | W23 | 7 | 0% | 0% | 0 | $500K | YC investment$500K, Apr 2023 |
AI Property Manager for Airbnb & Short-Term Rental Hosts | S24 | 6 | YC | Pre-seed (before YC)May 2024 | |||
AI agent for construction drawings review | W24 | 6 | +20% | −25% | 0 | $2.1M | Seed$1.6M, Aug 2024 |
Unlocking Virtual Power Plants for rental properties | W22Acquired | 6 | 0% | 0% | 0 | $500K | YC investment$500K, Jun 2022 |
Buy and grow profitable e-commerce companies selling on Amazon and DTC | W21Inactive | 6 | −14% | −14% | 0 | $340M | Debt$30M, Mar 2022 |
Digital banking platform for the 30 million smartphone users in DRC. | S23 | 5 | 0% | 0% | 0 | $500K | Pre-seed$500K, Feb 2026 |
The best backend for AI-coded apps | S22Acquired | 5 | −37% | −29% | 0 | $3.4M | Seed$3.4M, Aug 2022 |
Mobile ordering & payments for Brick & Mortars | W21Inactive | 5 | 0% | 0% | 0 | SeedMar 2021 | |
AI-native credentialing and contracting for healthcare | X26 | 4 | 0 | ||||
Helps teams work effectively with AI coding agents. | W24 | 4 | −50% | −56% | 0 | $500K | YC investment$500K, Feb 2024 |
Connect your agents to the stock market | S26 | 2 | 0 | ||||
AI Takeoffs for Concrete | X26 | 2 | YC | ||||
Localhost service isolation and orchestration for git worktrees | F25Inactive | 2 | 0 | ||||
Event extraction for Medical Researchers | S23 | 2 | 0 | SeedJul 2023 | |||
AI assisted documentation for PT/OT/SLP | W23 | 2 | 0 | ||||
Convert more verified users. Instantly & accurately validate user IDs. | S18Acquired | 2 | 0 | $11.6M | Series A$9M, Aug 2020 | ||
The Authorization Layer for AI Agents | X26 | 1 | 0 | $500K | YC investment$500K, Jun 2026 | ||
Incentives and financing for energy efficiency upgrades | S23Inactive | 1 | 0 | $500K | YC investment$500K, Sep 2023 | ||
ai | W23 | 1 | 0 | $500K | YC investment$500K, Apr 2023 | ||
Open source build tool for monorepos and large codebases | W23Inactive | 1 | 0 | $500K | YC investment$500K, Apr 2023 | ||
Figma for 3D design | W21Inactive | 1 | 0 | SeedMar 2021 | |||
A live online learning platform that empowers kids ages 3-18. | W16 | 1,505 | 7 | $240M | Series D$110M, Oct 2021 | ||
Patreon for professional authors. | W18Inactive | 0 | $120K | YC investment$120K, Jan 2018 |
Every launched company in YC's public directory, with its batch, status, industry and location. New companies show up the week YC lists them.
Each company is matched to Crustdata by its website. Crustdata adds team size and its change over 6 and 12 months, open roles from job postings, reported funding, and founders' past employers.
Hiring the most counts distinct roles posted in the last 60 days. Growth needs 10+ people today, shrinking 20+ a year ago, so tiny teams do not top the lists. Rebuilt every week.
The numbers on this page come from three Crustdata API calls. Crustdata tags 5,000+ companies with Y Combinator as an investor; swap the filter for any investor, industry or headcount range and track your own list, with founders' work emails one call away.
# 1. every company with Y Combinator as an investor curl https://api.crustdata.com/company/search \ -H "authorization: Bearer $CRUSTDATA_API_KEY" \ -H "x-api-version: 2025-11-01" \ -d '{ "filters": { "field": "funding.investors", "type": "in", "value": ["Y Combinator"] }, "fields": ["basic_info.name", "headcount.total", "headcount.growth_percent", "funding.total_investment_usd"], "limit": 100 }' # 2. open listings per company, last 60 days (limit 0 = counts only) curl https://api.crustdata.com/job/search \ -H "authorization: Bearer $CRUSTDATA_API_KEY" \ -H "x-api-version: 2025-11-01" \ -d '{ "filters": { "op": "and", "conditions": [ { "field": "company.basic_info.company_id", "type": "in", "value": [...] }, { "field": "metadata.date_added", "type": "=>", "value": "2026-08-24" } ]}, "limit": 0, "aggregations": [{ "type": "group_by", "field": "company.basic_info.company_id", "agg": "count" }] }' # 3. the same company filter as a weekly watch: POST /watch/company/search
45 Y Combinator companies have a founder who worked at Airbnb; 32 are active.
10 companies posted roles in the last 60 days, led by Coinbase (91 roles), Shepherd (17 roles) and Outschool (7 roles). 14 mark themselves as hiring on YC's directory.
By team growth over 6 months (10+ people): Caddy (+86%), Hyperspell (+83%) and Extend (+42%).
Largest latest rounds in the last 12 months, after their YC batch: Numeral ($100M), Shepherd ($42M) and Malama Health ($9.2M).