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YC W16 companies (Winter 2016)

All 122 companies in Y Combinator's Winter 2016 batch, with team size, growth, open roles and funding.

Updated weekly, last on November 9, 2026. Roster from Y Combinator's public directory.

Hiring the mostlast 60 days
244 roles
Relativity SpaceW16
  1. 2Astranis103
  2. 3Apollo.io45
See all 23
Fastest growingteam, 6 months
+44%
Apollo.ioW16
  1. 2MagicBus+24%
  2. 3Deepgram+23%
See all 24
Shrinkingteam, 12 months
−60%
LygosW16
  1. 2Luciq (formerly Instabug)−29%
  2. 3Zenysis−24%
See all 18
Raised the mostlast 12 months
$300M
BoomW16
  1. 2Deepgram$130M
  2. 3Gecko Robotics$125M
See all 5
Companies
122
Active
58
Hiring, last 60 days
23
Open roles, 60 days
600
People on these teams
29,540
Showing 50 of 122 companies
CompanyTeam6 mo12 moOpen rolesTotal raisedLast round
On-demand delivery and financial services for Latin America.
15,009+1%+7%18$2.6BDebt$25M, Oct 2025
Building humanity’s multiplanetary future.
2,015+6%+20%244$1.4BSeries F$20M, Nov 2023
Get more leads. Make more money.
1,661+6%+12%36$423MUndisclosed round$201M, Oct 2022
AI-First Creative Partner for Enterprise Teams
1,036+3%+8%5$35.1MSeries A$30M, Dec 2021
Apollo is the foundation of your entire go-to-market strategy.
987+44%+54%45$251MSeries D$100M, Aug 2023
Advanced satellites for high orbits.
564+7%+20%103$1.7BDebt$468M, Sep 2026
Building foundational AI for speech transcription and understanding.
387+23%+64%42$216MSeries C$130M, Aug 2026
Economically and environmentally sustainable supersonic travel
365+10%+22%14$732MUndisclosed round$300M, Dec 2025
Modern payments infrastructure for Africa
320+3%+4%0$11.7MSeries A$10.2M, Aug 2018
AI + Robotics for the Built World
318+2%−5%11$347MUndisclosed round$125M, Aug 2026
Self-Driving Customer Care
310+16%+34%14$217MSeries C$110M, Apr 2026
The AI agent that doesn’t just support, it delights.
257−2%−6%1$221MUndisclosed round$100M, Jan 2022
Mason is the fastest way to take smart devices from idea to end user
251+2%+2%YC$25.1MUndisclosed round$25M, Dec 2020
Protects organizations from getting breached through their APIs.
208+4%+6%1$271MUndisclosed round$140M, Sep 2022
Agentic Observability Platform for Mobile
194−8%−29%0$53.1MSeries B$46M, May 2022
We make robots for biologists.
193−1%−8%3$260MSeries D$20.1M, Dec 2025
Tech enabled and fully integrated PAN India agri produce supply chain
180+3%+7%0$3.2MSeed$3M, Jan 2020
A smart-oven-paired subscription meal service.
169−2%+1%11$68.6MSeries C$30M, Aug 2022
Conversational Voice and Multimodal AI built with Open Source
168+7%+23%0$62.2MSeries B$40M, Nov 2021
Video infrastructure for developers
165+1%+9%3$174MSeries D$105M, Apr 2021
Close deals faster. Digitally.
151−3%−3%0$28.7MSeries B$20M, Dec 2020
Building the Operating System for B&M Retail using Deep Learning
131+3%+2%33$41.9MSeries B$25.9M, Nov 2021
Copia's a for-profit technology company that solves food waste &…
120+2%+4%0$4.7MSeed$150K, Dec 2021
Medicine or testing kit, prescribed online and delivered to your door.
111−3%−15%0$116MSeries C$22.5M, Aug 2020
The mobile-first insurance platform that makes insurance easy.
100 +2%0$27MSeries B$16M, Jan 2021
The easiest way to charter a bus in North America.
99+2%+2%0$21MSeries B$15M, Jun 2019
Customizable beauty for hair, skin, and body care products.
98−5%−8%YC$248MUndisclosed round$85.8M, Jan 2022
We're creating the loudest battery-driven speaker on the market
89+2%+2%YC$22.4MUndisclosed round$8.6M, Jun 2023
We make beautiful connected light switches that allow you to control…
64+7%−2%1$22.2MSeries B$12.5M, Mar 2021
Petcube is on the mission to improve lives of pets and pet owners…
61−5%−20%2$14.1MSeries A$10M, Jul 2020
We give Black software engineers support they need to advance in tech.
60+3%+2%0$100KGrant$100K, Aug 2016
Block bots & bad behavior
56+8%+24%YC$11.6MUndisclosed round$9.2M, Jan 2021
Plug-and-play cashier-less retail powered by computer vision and AI
53−9%−22%0$18MUndisclosed round$5M, Jul 2021
Detect Gunshots | Inform Law Enforcement | Empower First Responders
51+19%+31%0$2.1MSeed$2.1M, Aug 2016
Accelerating Histopathology for Cancer Research
49 −11%1$36.8MSeries A$32.3M, Oct 2021
The all-in-one solution for small businesses and self-employed.
44+5%−28%0$120KYC investment$120K, Mar 2016
Thunkable is the no-code platform to build powerful native mobile apps
43 +5%2$33.6MSeries B$30M, Feb 2022
Home boxing gym with motion trackers that compute punches and reps.
39−5%−5%0$98.5MSeries B$90M, Jun 2021
Platform to easily create chatbots to engage with audiences on…
37−14%−14%0$1.6MSeed$1.5M, Oct 2025
We make vanpool simple.
36+24%+38%0Series ANov 2019
All-In-One Business Operating System by PocketSuite
32+3%+3%YC$2MGrant$500K, Nov 2019
Lynks is an e-commerce company that makes high demand products…
32−3%−6%0$240KPre-seed$120K, Mar 2017
Building powerful data analysis software for developing countries.
29−3%−24%1$21.9MSeries B$13.3M, Jun 2022
AI-powered platform for Accessible and Personalized Breast Health…
26+8%−19%YC$6.4MUndisclosed round$1.8M, Oct 2025
Able Health gets doctors paid more for higher quality care
240%+4%0SeedMar 2016
mRelief has built an easy-to-use platform and web and text messaging…
24−11%−11%0$120KGrant$120K, Jul 2018
Lygos (W16) built and commercialized sustainable, high-performance…
22−45%−60%0$213MGrant$1.8M, Jul 2024
AI edited video souvenirs as a service
200%−5%0
Self-driving semi trucks.
19−5%−5%0$317MPost-IPO equity$200M, Nov 2021
Emails as quick and easy as text messaging.
190%0%YC$3.2MYC investment$120K, Mar 2016

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 YC W16 companies

How many YC W16 companies are there?

122 companies were in Y Combinator's Winter 2016 batch (W16); 58 are active.

Which YC W16 companies are hiring?

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.

Which YC W16 companies are growing fastest?

By team growth over 6 months (10+ people): Apollo.io (+44%), MagicBus (+24%) and Deepgram (+23%).

Which YC W16 companies raised the most?

Largest latest rounds in the last 12 months, after their YC batch: Boom ($300M), Deepgram ($130M) and Gecko Robotics ($125M).

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