CrustdataGet an API key

YC companies founded by ex-X, The Moonshot Factory people

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.

Hiring the mostlast 60 days
7 roles
BenepassW20
  1. 2Atomic Industries2
  2. 3Darwin1
See all 3
Fastest growingteam, 6 months
+33%
RevoyW22
  1. 2Clad+30%
  2. 3Benepass+25%
See all 6
Shrinkingteam, 12 months
−62%
Stralis AircraftW23
  1. 2Reforged Labs−39%
See all 2
Raised the mostlast 12 months
$40M
BenepassW20
  1. 2Revoy$27M
  2. 3Dots 💸$8.9M
See all 4
Companies
14
Active
14
Hiring, last 60 days
3
Open roles, 60 days
10
People on these teams
319
Showing 14 of 14 companies
CompanyBatchTeam6 mo12 moOpen rolesTotal raisedLast round
Pre-tax and lifestyle benefits, managed in one place.
W20135+25%+67%7$74.7MSeries B$40M, Jan 2026
Software orchestrated mass production of plastics
W2164+16%+49%2$45.3MSeries A$25M, Jun 2025
Farm Genetics Made Easy - Using DNA and Software
S2325+14%+127%0$5.8MSeed$5.3M, Dec 2025
Developer friendly drop in payouts infrastructure
S2118+20%+50%YC$14.8MSeries A$8.9M, Feb 2026
Turn intuition into insights, in minutes
W2214−44%−39%YC$3.9MSeed$3.9M, Aug 2024
Billing and project management for utility construction
W2313+30%+30%YC$2.7MSeed$2.2M, Apr 2023
Make diesel semi trucks hybrid-electric
W2212+33%+33%0$27.5MSeries A$27M, Aug 2026
Foundation models to simulate Earth, starting with weather.
S2411−15%−15%YC$500KYC investment$500K, Sep 2024
Emission free hydrogen electric aircraft
W238−58%−62%0$2.2MGrant$161K, Jul 2025
Collaborative workspace for internal tools and agents
W236  0$500KYC investment$500K, Apr 2023
Deal Intelligence and Sales Coaching Platform
W235  0
Robot technicians for AI infrastructure
F254  1SeedDec 2025
Speed up materials innovation with Artificial Intelligence
S232  YC$3.1MSeed$2.6M, Nov 2023
orchestrate your coding agents with sudocode
S232  0Pre-seedAug 2023

How this works

1. The roster

Every launched company in YC's public directory, with its batch, status, industry and location. New companies show up the week YC lists them.

2. The numbers

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.

3. The lists

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.

Built with Crustdata. Get your own API key and build your own.

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.

  • Company search for team size, growth and funding
  • Job search with a count by company, for who is hiring and for what
  • A watch that re-runs the search weekly and sends only what changed
# 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

Questions about ex-X, The Moonshot Factory founded YC companies

How many ex-X, The Moonshot Factory founded YC companies are there?

14 Y Combinator companies have a founder who worked at X, The Moonshot Factory; 14 are active.

Which ex-X, The Moonshot Factory founded YC companies are hiring?

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.

Which ex-X, The Moonshot Factory founded YC companies are growing fastest?

By team growth over 6 months (10+ people): Revoy (+33%), Clad (+30%) and Benepass (+25%).

Which ex-X, The Moonshot Factory founded YC companies raised the most?

Largest latest rounds in the last 12 months, after their YC batch: Benepass ($40M), Revoy ($27M) and Dots 💸 ($8.9M).

Browse YC companies

By batch

Show fewer

By industry

Show fewer

By location

Show fewer

By founders' past employer

Show fewer