Get an API keyGet an API keyThe 18 YC W16 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 |  Lygos (W16) built and commercialized sustainable, high-performance… | 22 | −45% | −60% | 0 | $213M | Grant$1.8M, Jul 2024 |
| 2 |  Agentic Observability Platform for Mobile | 194 | −8% | −29% | 0 | $53.1M | Series B$46M, May 2022 |
| 3 |  Building powerful data analysis software for developing countries. | 29 | −3% | −24% | 1 | $21.9M | Series B$13.3M, Jun 2022 |
| 4 |  Petcube is on the mission to improve lives of pets and pet owners… | 61 | −5% | −20% | 2 | $14.1M | Series A$10M, Jul 2020 |
| 5 |  AI-powered platform for Accessible and Personalized Breast Health… | 26 | +8% | −19% | YC | $6.4M | Undisclosed round$1.8M, Oct 2025 |
| 6 |  Platform to easily create chatbots to engage with audiences on… | 37 | −14% | −14% | 0 | $1.6M | Seed$1.5M, Oct 2025 |
| 7 |  mRelief has built an easy-to-use platform and web and text messaging… | 24 | −11% | −11% | 0 | $120K | Grant$120K, Jul 2018 |
| 8 |  Accelerating Histopathology for Cancer Research | 49 | −11% | 1 | $36.8M | Series A$32.3M, Oct 2021 | |
| 9 |  Customizable beauty for hair, skin, and body care products. | 98 | −5% | −8% | YC | $248M | Undisclosed round$85.8M, Jan 2022 |
| 10 |  We make robots for biologists. | 193 | −1% | −8% | 3 | $260M | Series D$20.1M, Dec 2025 |
| 11 |  Lynks is an e-commerce company that makes high demand products… | 32 | −3% | −6% | 0 | $240K | Pre-seed$120K, Mar 2017 |
| 12 |  The AI agent that doesn’t just support, it delights. | 257 | −2% | −6% | 1 | $221M | Undisclosed round$100M, Jan 2022 |
| 13 |  Self-driving semi trucks. | 19 | −5% | −5% | 0 | $317M | Post-IPO equity$200M, Nov 2021 |
| 14 |  Home boxing gym with motion trackers that compute punches and reps. | 39 | −5% | −5% | 0 | $98.5M | Series B$90M, Jun 2021 |
| 15 |  AI + Robotics for the Built World | 318 | +2% | −5% | 11 | $347M | Undisclosed round$125M, Aug 2026 |
| 16 |  AI edited video souvenirs as a service | 20 | 0% | −5% | 0 | ||
| 17 |  Close deals faster. Digitally. | 151 | −3% | −3% | 0 | $28.7M | Series B$20M, Dec 2020 |
| 18 |  We make beautiful connected light switches that allow you to control… | 64 | +7% | −2% | 1 | $22.2M | Series B$12.5M, Mar 2021 |
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
122 companies were in Y Combinator's Winter 2016 batch (W16); 58 are active.
23 companies posted roles in the last 60 days, led by Relativity Space (244 roles), Astranis (103 roles) and Apollo.io (45 roles). 20 mark themselves as hiring on YC's directory.
By team growth over 6 months (10+ people): Apollo.io (+44%), MagicBus (+24%) and Deepgram (+23%).
Largest latest rounds in the last 12 months, after their YC batch: Boom ($300M), Deepgram ($130M) and Gecko Robotics ($125M).