14 Y Combinator companies with a founder who worked at X, The Moonshot Factory 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 |
|---|---|---|---|---|---|---|---|
Pre-tax and lifestyle benefits, managed in one place. | W20 | 135 | +25% | +67% | 7 | $74.7M | Series B$40M, Jan 2026 |
Software orchestrated mass production of plastics | W21 | 64 | +16% | +49% | 2 | $45.3M | Series A$25M, Jun 2025 |
Farm Genetics Made Easy - Using DNA and Software | S23 | 25 | +14% | +127% | 0 | $5.8M | Seed$5.3M, Dec 2025 |
Developer friendly drop in payouts infrastructure | S21 | 18 | +20% | +50% | YC | $14.8M | Series A$8.9M, Feb 2026 |
Turn intuition into insights, in minutes | W22 | 14 | −44% | −39% | YC | $3.9M | Seed$3.9M, Aug 2024 |
Billing and project management for utility construction | W23 | 13 | +30% | +30% | YC | $2.7M | Seed$2.2M, Apr 2023 |
Make diesel semi trucks hybrid-electric | W22 | 12 | +33% | +33% | 0 | $27.5M | Series A$27M, Aug 2026 |
Foundation models to simulate Earth, starting with weather. | S24 | 11 | −15% | −15% | YC | $500K | YC investment$500K, Sep 2024 |
Emission free hydrogen electric aircraft | W23 | 8 | −58% | −62% | 0 | $2.2M | Grant$161K, Jul 2025 |
Collaborative workspace for internal tools and agents | W23 | 6 | 0 | $500K | YC investment$500K, Apr 2023 | ||
Deal Intelligence and Sales Coaching Platform | W23 | 5 | 0 | ||||
Robot technicians for AI infrastructure | F25 | 4 | 1 | SeedDec 2025 | |||
Speed up materials innovation with Artificial Intelligence | S23 | 2 | YC | $3.1M | Seed$2.6M, Nov 2023 | ||
orchestrate your coding agents with sudocode | S23 | 2 | 0 | Pre-seedAug 2023 |
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
14 Y Combinator companies have a founder who worked at X, The Moonshot Factory; 14 are active.
3 companies posted roles in the last 60 days, led by Benepass (7 roles), Atomic Industries (2 roles) and Darwin (1 roles). 8 mark themselves as hiring on YC's directory.
By team growth over 6 months (10+ people): Revoy (+33%), Clad (+30%) and Benepass (+25%).
Largest latest rounds in the last 12 months, after their YC batch: Benepass ($40M), Revoy ($27M) and Dots 💸 ($8.9M).