3,241 Y Combinator companies based in SF Bay Area, with team size, growth, open roles and funding.
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 |
|---|---|---|---|---|---|---|---|
Restaurant delivery. | S13Public | 84,144 | +3% | +8% | 129 | $5.2B | Post-IPO debt$2.8B, Oct 2026 |
Marketplace for grocery delivery and pickup | S12Public | 25,483 | +2% | +5% | 85 | $2.9B | Private equity$232M, Nov 2021 |
Economic infrastructure for the internet. | S09 | 16,694 | +8% | +21% | 659 | $10B | Secondary$694M, Mar 2026 |
The all-in-one HR and payroll platform for global teams | W19 | 9,642 | +1% | +21% | 144 | $1.3B | Series E$300M, Oct 2025 |
One place to run all your HR, IT, and Finance. Globally. | W17 | 7,889 | +5% | +23% | 192 | $2.4B | Series G$450M, May 2025 |
The frontpage of the internet. | S05Acquired | 5,169 | +5% | +13% | 0 | $1.3B | Series F$410M, Aug 2021 |
Every shift, Covered. | W17 | 4,141 | +10% | +18% | 20 | $94.1M | Series C$30M, Feb 2022 |
Backup and share files in the cloud. | S07Public | 3,970 | −3% | +3% | 35 | $2.8B | Post-IPO debt$400M, Jun 2026 |
A complete DevOps platform delivered as a single application. | W15Public | 3,477 | +1% | +7% | 230 | $414M | Post-IPO equity$268M, Feb 2022 |
Platform for global logistics. | W14 | 2,978 | +3% | +8% | 93 | $2.7B | Secondary$260M, Apr 2026 |
A flexible work app that connects businesses with hourly workers. | S15 | 2,747 | +7% | +16% | 2 | $148M | Series D$60M, May 2023 |
Change the world to value skills over pedigree | S11 | 2,231 | +4% | +14% | 3 | $103M | Series D$60M, Mar 2022 |
Vanta, the proven leader in automated compliance helping startups… | W18 | 1,993 | +6% | +34% | 9 | $503M | Series D$150M, Jul 2025 |
The leader in automated data movement | W13 | 1,934 | +5% | +13% | 44 | $853M | Debt$125M, May 2023 |
Extremely talented assistants for busy people | W15 | 1,877 | +1% | +3% | YC | $12.3M | Undisclosed round$139K, Jun 2024 |
Professional website design and publishing platform. | S13 | 1,847 | +9% | +16% | 46 | $335M | Undisclosed round$400K, Apr 2025 |
People infrastructure for the future of work | S14 | 1,846 | +3% | +14% | 28 | $740M | Undisclosed round$61.1M, May 2025 |
The easiest way to automate your work. | S12 | 1,530 | +3% | +8% | 12 | $1.4M | Undisclosed round$1.4M, Apr 2024 |
The future of B2B spend | S20 | 1,421 | +13% | +38% | 3 | $371M | Series D$190M, Oct 2024 |
Self-driving cars. | W14Acquired | 1,342 | −5% | −14% | 0 | ||
Software development platform. | S10 | 1,108 | +7% | +20% | 38 | $436M | Series C$105M, Mar 2022 |
Apollo is the foundation of your entire go-to-market strategy. | W16 | 987 | +44% | +54% | 45 | $251M | Series D$100M, Aug 2023 |
The 401(k) for small and medium-sized businesses. | S15 | 930 | +12% | +20% | 36 | $915M | Undisclosed round$100M, Oct 2025 |
A developer-friendly and enterprise-grade search API. | W14 | 923 | +9% | +10% | 19 | $334M | Series D$150M, Jul 2021 |
A mental health benefits platform for employers. | W18 | 920 | +2% | −1% | 5 | $167M | Series D$74M, Feb 2021 |
AI-powered contract management | S15 | 868 | +3% | +15% | 1 | $334M | Series E$150M, Jan 2022 |
The genetic testing platform detecting and measuring disease. | S17Public | 866 | +13% | +26% | 21 | $426M | Series D$130M, Jun 2024 |
Unlocking the power of biotech with modern software for modern science | S12 | 813 | +3% | +3% | 4 | $412M | Series F$100M, Nov 2021 |
Mixpanel is event analytics for builders that need answers. | S09 | 771 | +18% | +43% | 26 | $277M | Series C$200M, Nov 2021 |
All-in-one app for internal communication and HR | W22 | 752 | +22% | +79% | 1 | $77.5M | Series A$77.5M, Feb 2026 |
The leading Composable CDP and AI Decisioning platform | S19 | 658 | +14% | +51% | 52 | $332M | Series D$150M, Apr 2026 |
AI-powered Language Operations platform | W14Acquired | 655 | −1% | −5% | 0 | $112M | Undisclosed round$21M, Dec 2023 |
Customized fertility benefits for modern companies. | S17 | 632 | +2% | +11% | 3 | $114M | Series C$75M, Aug 2021 |
A learning platform that enables you to train your staff or customers. | S15 | 581 | −4% | −10% | YC | $402M | Undisclosed round$30M, May 2023 |
All-in-one recruiting platform that empowers hiring excellence in… | W19 | 580 | +31% | +73% | 56 | $120M | Series D$50M, Jul 2025 |
Customer communications hub for building strong relationships | S14 | 579 | +6% | +13% | 4 | $204M | Series D$65M, Jun 2022 |
The cloud-native, operational database built for speed and scale. | W11 | 565 | +3% | +2% | 14 | $464M | Series F$30M, Oct 2022 |
Advanced satellites for high orbits. | W16 | 564 | +7% | +20% | 103 | $1.7B | Debt$468M, Sep 2026 |
Modern insurance brokerage. | W18Acquired | 542 | −11% | −18% | 0 | $310M | Series D$200M, Apr 2022 |
Building Clinical Superintelligence. | S18 | 541 | +20% | +54% | YC | $29.1M | Undisclosed round$7.9M, Apr 2024 |
Learning platform for job seekers with job applications automation | S21 | 533 | −5% | −5% | 0 | $9.5M | Series A$8M, Mar 2023 |
Turn physical objects and environments into 3D models in seconds. | W12Public | 527 | +2% | 0% | 14 | $418M | Post-IPO equity$295M, Jul 2021 |
API-first stock and crypto brokerage platform | W19 | 525 | +20% | +47% | 46 | $764M | Debt$135M, Jul 2026 |
Communication app for K-8 teachers, kids, and families | S12 | 523 | +4% | +1% | 1 | $191M | Undisclosed round$125M, Apr 2024 |
Turning company knowledge into expert teams | W15 | 517 | +1% | +3% | 11 | $78.4M | Series B$62M, Dec 2021 |
Talent engagement platform | S17Acquired | 507 | 0% | +7% | 0 | ||
The platform for all your life events. | S16 | 503 | +2% | +8% | YC | $107M | Series B$60M, Nov 2022 |
Language learning through video chat. | S11Acquired | 493 | +1% | 0% | 0 | $1M | Seed$1M, Dec 2014 |
Build in a weekend. Scale to millions. | S20 | 484 | +38% | +106% | 0 | $1.2B | Series F$150M, Oct 2026 |
TRM is building a safer world for billions of people. | S19 | 481 | +14% | +36% | 67 | $220M | Series C$70M, Sep 2026 |
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
3,241 Y Combinator companies are based in SF Bay Area; 2,140 are active.
341 companies posted roles in the last 60 days, led by Stripe (659 roles), GitLab (230 roles) and Airbnb (202 roles). 802 mark themselves as hiring on YC's directory.
By team growth over 6 months (10+ people): Human Archive (+579%), Linewise (+331%) and Broccoli AI (+254%).
Largest latest rounds in the last 12 months, after their YC batch: Replit ($400M), Exa ($250M) and Hightouch ($150M).