All 334 companies in Y Combinator's Winter 2021 batch, with team size, growth, open roles and funding.
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 |
|---|---|---|---|---|---|---|
Redcliffe Labs is India's Largest Omni-channel Diagnostics platform | 2,065 | +5% | +10% | 0 | $152M | Series C$42M, Sep 2024 |
Physical AI for asset-heavy industries | 888 | 0% | +21% | 4 | $184M | Series C$120M, Dec 2024 |
Leading online after-school for kids & teens to learn AI & coding | 822 | +5% | +18% | 9 | $2M | Undisclosed round$1.2M, Jan 2023 |
App for independent agents to sell financial products in India | 733 | −1% | YC | $11.6M | Series A$11M, Sep 2022 | |
All-in-one real estate marketplace for Latin America | 465 | −6% | −3% | 0 | $44.7M | Undisclosed round$35M, Jan 2022 |
Seamless mobility to, through, and from space. It starts with 100%… | 451 | +17% | +33% | 4 | $2.4B | Series E$1B, Sep 2026 |
We help US tech companies hire and manage software engineers in LATAM | 445 | 0% | +9% | 0 | $18M | Series A$5M, Jan 2023 |
Simplifying hiring and payments for the global workforce | 411 | +1% | +4% | 0 | $34.7M | Series A$9M, Dec 2022 |
Internet for the urban developing world. | 382 | +18% | +41% | 0 | $75.6M | Series B$40M, Mar 2026 |
Challenger Bank for consumers in French speaking Africa. | 327 | 0% | +4% | 0 | $49.1M | Debt$1.5M, Aug 2026 |
A digital wallet for the Middle East & North Africa | 324 | +15% | +45% | 5 | $30.5M | Series A$22M, May 2026 |
The OS for Embedded Telecom | 318 | +20% | +51% | YC | $97M | Series B$73M, Dec 2024 |
All-electric seagliders for fast, affordable regional transportation | 288 | +11% | +15% | 30 | $327M | Debt$120M, Aug 2026 |
Software and AI tools for SMBs in the US and Latin America | 270 | −1% | −3% | 0 | $63.8M | Series A$3M, Jun 2022 |
AI recruiter that runs outbound sourcing campaigns to find top talent | 266 | +38% | +62% | YC | $2.2M | Seed$2.2M, Aug 2023 |
Amazon-like logistics for e-commerce companies in Latam | 248 | +5% | +3% | 0 | $34M | Series A$1M, Feb 2025 |
The data layer for physical AI | 231 | +31% | +75% | 3 | $110M | Series C$60M, Feb 2026 |
Cyble - World’s First Intelligence-Driven, AI-Native Security… | 230 | 0% | −9% | 1 | $44.8M | Series B$6.2M, Nov 2023 |
Protecting the grid today, preparing the grid for tomorrow | 221 | +18% | +51% | 1 | $97.2M | Series B$55M, Nov 2025 |
The online language school for Latam, with groups led by an instructor | 216 | −5% | −18% | 0 | $4.4M | Equity crowdfunding$1.5M, Apr 2024 |
The AI operating system for restaurants | 214 | +10% | +13% | 1 | $2.3M | Seed$2.3M, Apr 2021 |
Reinventing lifelong learning for the future of work. | 204 | −2% | −7% | 0 | $1.2M | Angel$678K, Feb 2022 |
The AI-native FP&A platform that helps Finance teams drive business… | 196 | +32% | +54% | 4 | ||
AI-powered customer service for startups | 193 | +2% | +9% | 0 | $1.2M | Undisclosed round$125K, Jan 2023 |
Shopify for Beauty and Wellness businesses in Latam | 186 | +9% | +23% | 1 | $42.8M | Series B$35M, Aug 2025 |
The new wealth manager for Europe | 177 | −4% | +16% | 1 | $43.5M | Series B$29.5M, Sep 2025 |
Bring Justice to Light | 171 | −14% | −10% | 1 | $63M | Series B$35M, Sep 2023 |
The most flexible AI meeting notetaker ever built. | 170 | −7% | −1% | 0 | $23.8M | Equity crowdfunding$2M, Oct 2024 |
Generative AI powered Shopify for home service professionals | 168 | +7% | +27% | 5 | $44M | Series B$27M, Aug 2025 |
The AI Underwriting OS for Commercial, Specialty & E&S insurance | 167 | +7% | +37% | 0 | $7.7M | Series A$7M, Nov 2025 |
Enabling consumers split the cost of purchases without a credit card | 159 | −1% | +1% | 0 | $17.7M | Debt$15M, Sep 2021 |
AI-driven online tech school for busy professionals | 154 | −8% | −18% | YC | $6M | Grant$2.7M, Nov 2024 |
Application Development Platform (Native Mobile + Web Apps) | 151 | −6% | −15% | YC | $28M | Series A$25.5M, Jan 2024 |
Voice AI for developers. | 150 | +50% | +114% | 4 | $70.6M | Series B$50M, May 2026 |
Online therapy platform for the Spanish-speaking market | 146 | +4% | +1% | 0 | SeedSep 2022 | |
Admin automation for healthcare | 145 | +22% | +54% | 1 | $33.1M | Series B$30M, Feb 2025 |
Your AI GTM platform for In-Person Events | 134 | +6% | +19% | 5 | $2.4M | Seed$2.2M, Mar 2021 |
We help people resolve debt. | 133 | +9% | +45% | YC | Series AMay 2026 | |
We underwrite and insure house rentals in Latam | 131 | +1% | −2% | 0 | $10M | Series A$5.6M, Nov 2024 |
Embedded lending infrastructure | 126 | +8% | +29% | 0 | $180M | Corporate round$9M, Oct 2025 |
Where restaurants in Africa buy food supplies | 124 | −6% | −16% | 0 | $33.2M | Series A$20M, Sep 2022 |
The Logistics Operating System for E-commerce in LatAm | 123 | −22% | −20% | 0 | $10M | Undisclosed round$6.1M, Apr 2025 |
Source better parts by partnering directly with vetted manufacturers | 122 | +8% | +30% | 1 | $16.1M | Series A$12.1M, Nov 2025 |
all-in-one operating system (OS) for telcos | 121 | +34% | +51% | 8 | $66.3M | Series B$40M, Mar 2026 |
Account-to-Account payments in Mexico and Chile. | 120 | +11% | +36% | 0 | $10.7M | Series A$7M, Apr 2024 |
Infrastructure and tools to build and scale blockchain applications. | 110 | +2% | −4% | YC | $102M | Secondary$60M, Jan 2024 |
Modernizing commercial insurance | 107 | +11% | +43% | 17 | $61.6M | Series B$42M, Mar 2026 |
We're Khatabook / OkCredit for Pakistan | 102 | −1% | −2% | 0 | ||
Digital bank for teenagers in LatAm connected to prepaid card | 102 | +2% | +3% | 0 | $25.8M | Undisclosed round$10.7M, Apr 2023 |
India’s first and only marriage super app | 100 | −3% | −6% | YC | $11M | Undisclosed round$10K, Jun 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
334 companies were in Y Combinator's Winter 2021 batch (W21); 226 are active.
46 companies posted roles in the last 60 days, led by REGENT (30 roles), Shepherd (17 roles) and Codingal (9 roles). 77 mark themselves as hiring on YC's directory.
By team growth over 6 months (10+ people): OpenCode (+200%), Venu AI (+58%) and Vapi (+50%).
Largest latest rounds in the last 12 months, after their YC batch: Stoke Space ($1B), Nourish ($100M) and Ollama ($65M).