All 131 companies in Y Combinator's Summer 2018 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 |
|---|---|---|---|---|---|---|
One-stop-shop for flexible family care | 1,078 | +3% | +8% | 1 | $241M | Series D$150M, Nov 2021 |
Consumer fintech for Indonesia | 939 | +2% | +15% | 23 | $515M | Series C$270M, Aug 2026 |
Manage your ledgers and avail Financial Services like Lending on your… | 893 | +7% | +12% | 0 | $187M | Series C$100M, Aug 2021 |
Building a world where alternative proteins are no longer alternative. | 548 | +11% | +18% | 0 | GrantAug 2018 | |
Building Clinical Superintelligence. | 541 | +20% | +54% | YC | $29.1M | Undisclosed round$7.9M, Apr 2024 |
Logistic Management System for E-commerce & Retail in Mexico. | 534 | +2% | +8% | 36 | $27M | Series B$20M, Aug 2022 |
Modernizing the hospitality tech stack. | 401 | +7% | +35% | 33 | $177M | Series D$80M, Jun 2025 |
We at Leena AI build a virtual assistant that answers employee's… | 327 | +11% | +25% | 20 | $41M | Undisclosed round$1M, Oct 2026 |
AI-enabled ordering for medical equipment & supplies | 246 | +29% | +64% | 4 | $3M | Seed$3M, Mar 2021 |
Learning Hub for companies in Latam | 235 | +3% | −7% | 0 | $34.9M | Series B$25M, Jan 2022 |
We verify global supply chains for issues like child slavery and… | 202 | −1% | +1% | 0 | $100K | YC investment$100K, Aug 2018 |
Build and grow your app business | 185 | +13% | +41% | 9 | $119M | Series C$50M, May 2025 |
Wealth manager | 149 | +6% | +17% | 12 | $59.1M | Undisclosed round$4.2M, Feb 2024 |
Simple and secure bookkeeping for Indian businesses. | 146 | +4% | +7% | 0 | $84.2M | Non-equity support$67M, Aug 2021 |
Making low cost versions of high cost generic drugs. | 144 | +7% | +19% | 12 | SeedJan 2018 | |
An online provider for greater mental health | 143 | +1% | +6% | YC | $53.3M | Grant$2M, May 2022 |
Payment operations tools for money movement. | 127 | +4% | −15% | YC | $183M | Series C$50M, Mar 2022 |
Africa's leading supply chain technology platform. | 127 | −2% | −7% | 0 | $164M | Secondary$79M, Mar 2025 |
Honeylove makes functional undergarments for women | 120 | +3% | +8% | 0 | $16M | Series A$13M, Sep 2019 |
Full-stack grocery delivery in LatAm | 116 | −1% | −3% | 2 | $32.6M | Series A$22.5M, Jan 2022 |
Mobility and payments platform for Latin America | 114 | 0% | −1% | 0 | $72.7M | Series A$45.7M, Oct 2018 |
Our platform enables creators to build experiences, games, and worlds… | 107 | −12% | 0 | $10M | Series A$7M, Jan 2021 | |
Lending Intelligence Software | 103 | +14% | +41% | 3 | $12.1M | Series A$12M, Jul 2021 |
We provide primary care in senior living communities. | 78 | −5% | −6% | 10 | $58.5M | Series B$15M, Dec 2023 |
Company Brain for people and agents to work in harmony. | 77 | −57% | −57% | 11 | $90.4M | Undisclosed round$70M, Sep 2026 |
AI Platform for Efficient and Sustainable Operations | 77 | −5% | 0 | $35.8M | Series A$30M, Jun 2024 | |
Titan is an award-winning wealth manager with a mission to increase… | 75 | +53% | +103% | 4 | $73M | Undisclosed round$58M, Jan 2023 |
The space infrastructure services company | 67 | +14% | +24% | 0 | $237M | Post-IPO equity$25M, Jun 2026 |
The complete toolkit to sell travel. | 66 | 0% | +16% | 5 | $56.2M | Series B$30M, Oct 2019 |
AI Agents for Regulatory Compliance | 66 | −7% | +6% | 0 | $8M | Series A$8M, Aug 2021 |
Shopify for experiences | 65 | +7% | −2% | 1 | $59.6M | Series A$10M, Oct 2026 |
Skills-based talent management solutions for a dynamic workforce. | 65 | +3% | +20% | YC | $2M | Seed$2M, Dec 2022 |
Connecting Survivors to Careers in Tech | 62 | +5% | 0 | $270K | Grant$150K, Sep 2026 | |
Modern, AI-powered clinical trial software platform. | 54 | −4% | +4% | 0 | $57.6M | Series B$40M, May 2022 |
Your AI agent for creating anything customer-facing, in minutes. | 52 | +8% | −4% | 3 | $71.6M | Series B$50M, Apr 2022 |
Robotic human cell manufacturing | 49 | +7% | 4 | $20.8M | Series A$19M, Nov 2023 | |
AI Document Fraud Detection for Banks, Credit Unions & Lenders | 46 | +7% | +7% | 2 | $38.7M | Series B$25M, Jan 2023 |
Autonomous drones to help warehouses scan inventory. | 46 | +15% | +21% | 0 | $46M | Undisclosed round$20M, Aug 2026 |
Anima - Design Agent | AgentGrid.io - Shared drive for humans & agents | 45 | −12% | −8% | 0 | $12.6M | Corporate round$10M, Feb 2026 |
The all-in-one business phone for teams. | 43 | −17% | −25% | 11 | $171M | Undisclosed round$105M, Sep 2025 |
The Computer Science Proficiency Assessment (CSPA™) is a… | 34 | +3% | +3% | 0 | $1.6M | Seed$1.5M, Sep 2018 |
Trends prediction for marketers | 33 | +14% | +22% | 2 | $1.8M | Seed$1.8M, Jun 2019 |
We build cities for people, not cars. | 33 | −3% | −17% | 2 | $40M | Series A$30M, Jan 2022 |
The automated solution for complex freight transactions. | 32 | −16% | −36% | YC | $19M | Seed$11M, Feb 2023 |
Automated receptionist that answers missed calls for local businesses | 32 | 0% | 0% | 0 | $120K | Seed$120K, May 2020 |
AI Clinical Assistant for Doctors | 28 | −7% | YC | $6.6M | Series A$5M, Dec 2020 | |
AIoT monitoring, workflow, and evidence systems for regulated labs. | 26 | +8% | +8% | 0 | $120K | Seed$120K, Jul 2019 |
Next-gen ingredients to decarbonize consumer products, starting w/… | 25 | −11% | −19% | 0 | $33.5M | Grant$1M, Jan 2024 |
The funnel builder built for health & wellness brands. | 25 | 0% | +32% | 0 | ||
Database for AI | 23 | −15% | −23% | YC | $19.6M | Series A$11M, Mar 2024 |
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
131 companies were in Y Combinator's Summer 2018 batch (S18); 77 are active.
22 companies posted roles in the last 60 days, led by SkydropX (36 roles), Canary Technologies (33 roles) and Ajaib (23 roles). 28 mark themselves as hiring on YC's directory.
By team growth over 6 months (10+ people): Titan (+53%), Verse Medical (+29%) and Eden (+20%).
Largest latest rounds in the last 12 months, after their YC batch: Ajaib ($270M), Within ($70M) and Corvus Robotics ($20M).