Get an API keyGet an API keyThe 17 YC W23 companies whose team shrank the most in the last 12 months (active companies that had 20+ people a year ago).
Updated weekly, last on November 9, 2026. Roster from Y Combinator's public directory.
| # | Company | Team | 6 mo | 12 mo | Open roles | Total raised | Last round |
|---|---|---|---|---|---|---|---|
| 1 |  Emission free hydrogen electric aircraft | 8 | −58% | −62% | 0 | $2.2M | Grant$161K, Jul 2025 |
| 2 |  The Control Plane for Enterprise Agents | 13 | −19% | −35% | 1 | $10.3M | Series A$5M, Nov 2024 |
| 3 |  Personal Injury Legal Work - Automated | 54 | −5% | −33% | 0 | $11.6M | Series A$9.5M, Apr 2024 |
| 4 |  The #1 Actionable FinOps Platform | 21 | −22% | −32% | 0 | $2.7M | Pre-seed$2.7M, Apr 2023 |
| 5 |  Frictionless payments via SMS | 21 | +5% | −28% | 0 | $5M | Seed$4.5M, Jul 2025 |
| 6 |  AI-Powered Clinical Decision Support & Ambient Scribing | 19 | −14% | −27% | YC | $7M | Seed$5M, Sep 2023 |
| 7 |  B2B payments platform for emerging markets. | 19 | −21% | 0 | $8.6M | Debt$5M, Aug 2024 | |
| 8 |  | 32 | −3% | −20% | 0 | $25.5M | Series A$20M, Jul 2025 |
| 9 |  B2B-2C real-time account to account payments | 17 | −19% | −19% | 0 | $2M | Seed$2M, Apr 2023 |
| 10 |  Models that keep learning | 36 | −10% | −16% | 0 | $8M | Seed$8M, May 2024 |
| 11 |  Creating new protein-based drugs at scale | 21 | −9% | −16% | 0 | $500K | Seed$500K, Feb 2025 |
| 12 |  The home for shared data logic | 30 | −9% | −12% | 0 | $575K | Seed$75K, May 2025 |
| 13 |  Crypto On and Off Ramp for Latam | 69 | −4% | −7% | 0 | $7.7M | Seed$5M, Aug 2024 |
| 14 |  Developing long-lasting drug formulations 50% faster | 35 | −5% | −5% | 0 | $16.5M | Series A$12M, Mar 2025 |
| 15 |  Build AI Agent teammates and automations in code or no-code | 20 | −17% | −5% | YC | $13M | Seed$13M, Sep 2025 |
| 16 |  AI-Powered Super Mentor for Test Prep | 23 | −4% | YC | $2M | Seed$2M, May 2024 | |
| 17 |  AI-based full stack observability platform | 46 | −10% | −2% | YC | $7M | Seed$6.5M, Aug 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
274 companies were in Y Combinator's Winter 2023 batch (W23); 199 are active.
33 companies posted roles in the last 60 days, led by Finni Health (83 roles), Latent (24 roles) and Tennr (19 roles). 79 mark themselves as hiring on YC's directory.
By team growth over 6 months (10+ people): LiteLLM (+100%), Haven (+83%) and Warp (+61%).
Largest latest rounds in the last 12 months, after their YC batch: Avoca ($125M), Numeral ($100M) and Latent ($80M).