84 Y Combinator companies with a founder who worked at Palantir 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 |
|---|---|---|---|---|---|---|---|
The frontpage of the internet. | S05Acquired | 5,169 | +5% | +13% | 0 | $1.3B | Series F$410M, Aug 2021 |
AI-powered contract management | S15 | 868 | +3% | +15% | 1 | $334M | Series E$150M, Jan 2022 |
This isn't just a marketplace; we're shaping the future of digital… | W18 | 695 | −2% | −3% | 0 | $427M | Series C$300M, Jan 2022 |
1st federally regulated exchange where people can trade on events | W19 | 604 | +17% | +83% | YC | $2.9B | Undisclosed round$30M, Jul 2026 |
AI English Tutor | W22 | 394 | +2% | +12% | 0 | $500K | YC investment$500K, Mar 2022 |
The autonomous revenue cycle management platform. | W20 | 243 | +19% | +45% | 2 | $220M | Series D$120M, Jul 2026 |
Health Insurance for Startups | W20 | 137 | −7% | +1% | 0 | $796M | Secondary$200M, Sep 2026 |
The complete toolkit to sell travel. | S18 | 66 | 0% | +16% | 5 | $56.2M | Series B$30M, Oct 2019 |
AI-native AML compliance platform for fintechs & banks | W22 | 63 | +34% | +50% | 5 | $20.1M | Series A$12.5M, Jun 2026 |
Instantly offer SDKs and API Docs | W23Acquired | 62 | +3% | −2% | 0 | $22.3M | Series A$9M, Apr 2025 |
Mobot is a QA-as-a-service platform using actual mechanical robots | W19 | 46 | −2% | +7% | 0 | $17.8M | Series A$12.5M, Aug 2022 |
Streamline your debt capital raise and management | W21Acquired | 45 | −2% | −18% | 0 | $20.1M | Series A$17M, Jan 2023 |
Create video by chatting to AI | S22 | 42 | −9% | −19% | 0 | ||
Software to find the best sites for renewables on the electrical grid | W22 | 38 | +23% | +27% | YC | $500K | Seed$500K, May 2025 |
Building powerful data analysis software for developing countries. | W16 | 29 | −3% | −24% | 1 | $21.9M | Series B$13.3M, Jun 2022 |
Automated e2e screenshot testing without writing or maintaining tests | S21 | 28 | +8% | +87% | YC | $19.1M | Series A$15M, Jul 2026 |
Worldwide exam-prep platform | S24 | 25 | +56% | +79% | 1 | $500K | YC investment$500K, Jan 2025 |
API first electronic health record (EHR) that is open source | S22 | 24 | +14% | +71% | 1 | GrantMar 2023 | |
Open-source platform to turn scripts into internal apps & workflows | S22 | 23 | −12% | −12% | 1 | Pre-seedAug 2022 | |
AI Powered All-In-One Payroll, HR + Recruiting | S23 | 22 | +22% | +57% | YC | $17.1M | Series A$12M, Apr 2026 |
Carta for Web3: token vesting and DeFi investment management. | W22Acquired | 22 | −19% | −29% | 0 | $15.7M | Seed$15.2M, Sep 2022 |
Online Coding School for Kids 8-16 | S21 | 21 | −5% | −22% | YC | $1.4M | Seed$1.3M, Feb 2023 |
AI to understand and automates the physical world | S21 | 20 | −9% | −13% | 1 | SeedSep 2022 | |
AI-Native Finance OS | S22 | 18 | −14% | −10% | YC | $4.5M | Seed$4.5M, Aug 2024 |
The autonomous data engineer for the mid-market | S24 | 16 | +45% | +129% | 5 | $6.3M | Seed$5.8M, Sep 2026 |
We help law enforcement solve crime | W25 | 13 | +18% | +160% | YC | $7M | Seed$7M, Mar 2025 |
The Control Plane for Enterprise Agents | W23 | 13 | −19% | −35% | 1 | $10.3M | Series A$5M, Nov 2024 |
Renewable infrastructure deployment at scale. | S24 | 12 | +140% | 0 | $4.4M | Seed$3.9M, Apr 2026 | |
AI Platform for Winning Defense & Government Contracts | S24 | 12 | −25% | +33% | 3 | $3.3M | Seed$3.3M, May 2025 |
AI-enabled procurement for government | W24 | 12 | +9% | +9% | YC | $2M | Series A$1.5M, Jan 2026 |
Empowering every doctor and every patient to participate in research | W23 | 12 | +50% | +50% | 0 | $1M | Seed$1M, Apr 2023 |
AI Agents for Advisory & Financial Services. | S24 | 11 | +22% | +38% | 0 | ||
Consumer focus groups run by AI | S25 | 10 | +25% | +11% | 0 | $500K | YC investment$500K, Sep 2025 |
Embedded Analytics and Data Sharing Platform | W20 | 10 | −17% | −41% | 0 | $14.4M | Series A$12M, Aug 2022 |
Tandem is a virtual office for remote and distributed teams. | S19Inactive | 10 | 0% | 0% | 0 | $7.5M | Series A$7.5M, Sep 2019 |
Scribe is an AI based Sales Development Representative that you can… | W17Acquired | 10 | 0% | 0% | 0 | $120K | YC investment$120K, Mar 2017 |
The secret backbone of e-commerce. | W14 | 10 | −9% | +11% | 0 | $120K | YC investment$120K, Mar 2014 |
Database of every product on the internet | S25 | 9 | +50% | YC | $6.5M | Seed$6M, Dec 2025 | |
Turnkey co-ownership & management of properties | W22Inactive | 9 | 0 | $500K | YC investment$500K, Mar 2022 | ||
AI agents for customer support. | S20 | 9 | +13% | +13% | YC | SeedSep 2021 | |
Design and build great interfaces | W23 | 7 | 0% | +17% | 0 | ||
Team-based authentication for B2B SaaS | W22 | 7 | 0% | 0% | YC | $2.6M | Seed$2.6M, Jul 2022 |
ML models automatically monitor business performance | W20Inactive | 7 | 0% | +17% | 0 | Pre-seedMar 2020 | |
Robotics | X26 | 6 | YC | ||||
Computational Law | W25 | 6 | −40% | −14% | YC | $500K | YC investment$500K, Feb 2025 |
AI-powered EHR for independent mental health professionals | W23 | 6 | −14% | −40% | YC | $500K | YC investment$500K, Apr 2023 |
AI for the physical world | S25 | 5 | 0 | $500K | YC investment$500K, Jan 2026 | ||
Multi-document processing for your risk teams, AI agents, pipelines | X25 | 5 | −29% | YC | $1.6M | Pre-seed$1.6M, Apr 2025 | |
Turn scattered data into one platform for decision-making | X25 | 5 | 0% | 0% | 0 | $500K | YC investment$500K, Jun 2025 |
The living map of your organization | F24 | 5 | 0 |
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
84 Y Combinator companies have a founder who worked at Palantir; 65 are active.
13 companies posted roles in the last 60 days, led by Amplitude (35 roles), Flagright (5 roles) and Duffel (5 roles). 31 mark themselves as hiring on YC's directory.
By team growth over 6 months (10+ people): Plume (+140%), Educato (+56%) and Novelcare (+50%).
Largest latest rounds in the last 12 months, after their YC batch: Candid Health ($120M), Kalshi ($30M) and Meticulous ($15M).