All 274 companies in Y Combinator's Winter 2023 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 |
|---|---|---|---|---|---|---|
Ai-native finance platform for the Middle East | 367 | +25% | +79% | 3 | $55M | Series A$48M, Aug 2025 |
Fast, Transparent Patient Experiences | 342 | +16% | +56% | 19 | $161M | Series C$101M, Jun 2025 |
AI-powered Sales Agent for Service-Based Industries | 270 | +38% | +108% | 6 | $126M | Series B$125M, Apr 2026 |
the AI social facilitator for offline human to human interactions | 203 | +12% | +38% | YC | $16.2M | Series A$10.1M, Dec 2025 |
The Agentic Support Platform purpose-built for B2B. | 183 | +15% | +81% | 3 | $51.3M | Series B$31M, Aug 2025 |
Infrastructure for indirect revenue channels | 180 | +22% | +58% | 14 | $18.5M | Series A$15M, Feb 2025 |
The AI-native sales tax solution. | 173 | +25% | +63% | 2 | $158M | Series C$100M, Sep 2026 |
Medical language models to automate healthcare operations | 137 | +47% | +198% | 24 | $93.5M | Series A$80M, Mar 2026 |
Empowering Autism Care Providers to Go Independent | 131 | +2% | +6% | 83 | $3.3M | Series A$3.2M, Mar 2024 |
Metal is an AI-driven operating system for fundraising | 127 | +43% | +189% | 0 | $4.5M | Seed$4.5M, Jun 2026 |
AI for corporate tax | 106 | +49% | +74% | 1 | $43.5M | Series B$31M, Feb 2026 |
Advertising for the new internet | 93 | +3% | +19% | YC | $10M | Series A$10M, May 2026 |
AI-native Employee Management Platform for High-Growth Companies | 87 | +61% | +200% | 11 | $85M | Series B$60M, Jun 2026 |
The Enterprise AI Transformation Platform | 85 | +10% | +23% | 0 | $19M | Series A$16M, May 2026 |
Train AI on distributed data | 83 | +2% | +1% | 0 | $23.6M | Series A$20M, Feb 2024 |
Automating Securities Compliance | 82 | +8% | +49% | 1 | $24.5M | Series A$22M, Jul 2026 |
Email for developers | 79 | +7% | +46% | 5 | $21.5M | Series A$18M, Dec 2024 |
Offensive security for the teams that are 100x outnumbered | 77 | +28% | +64% | YC | $23.8M | Series A$17.9M, Mar 2026 |
Transforming how health systems optimize labor | 74 | +19% | +85% | 12 | $31M | Series A$31M, Oct 2026 |
Crypto On and Off Ramp for Latam | 69 | −4% | −7% | 0 | $7.7M | Seed$5M, Aug 2024 |
Dollar banking for people in Latin America | 69 | +15% | +50% | 0 | $4.5M | YC investment$500K, Apr 2023 |
AI Servicing for Auto Lenders | 67 | +16% | +86% | 9 | $60.5M | Series A$60M, Jul 2025 |
Instantly offer SDKs and API Docs | 62 | +3% | −2% | 0 | $22.3M | Series A$9M, Apr 2025 |
The leading AI workforce for the trades. | 61 | +17% | +56% | 1 | $500K | YC investment$500K, Apr 2023 |
Software delivery built for machine scale. | 61 | +17% | 0 | $15.9M | Series A$10M, Mar 2026 | |
Build the software you wish existed. | 60 | +9% | +25% | 1 | $5.5M | Seed$5M, Aug 2023 |
Cloud warehousing & supply chain platform in MENA | 60 | +13% | +20% | YC | $10.4M | Series A$9.9M, Sep 2026 |
Managed marketplace for solar in Latam | 59 | +5% | +31% | 0 | $500K | YC investment$500K, Apr 2023 |
Hire the best AI Sales employees | AI SDR | AI RevOps | AI EA | 57 | +12% | +159% | 1 | $1.4M | Seed$800K, Jul 2023 |
Personal Injury Legal Work - Automated | 54 | −5% | −33% | 0 | $11.6M | Series A$9.5M, Apr 2024 |
Security infrastructure for developers and agents | 49 | +58% | +133% | 11 | $18.9M | Series A$16M, Jun 2025 |
AI Platform for Architects and Engineers | 47 | +4% | +47% | 2 | $17.1M | Series A$15M, Dec 2025 |
AI-based full stack observability platform | 46 | −10% | −2% | YC | $7M | Seed$6.5M, Aug 2023 |
Automation platform for logistics | 44 | +29% | +38% | YC | $18.3M | Series A$14.2M, Dec 2024 |
The Finance Control Centre for African Businesses | 43 | +2% | +16% | 0 | $2.5M | Seed$2M, Dec 2023 |
Create beautiful videos & docs for any product or process in minutes | 41 | +24% | +95% | 3 | $11.9M | Series A$10M, Oct 2026 |
Fully Agentic SWE | 40 | +8% | +33% | 8 | $3.5M | Undisclosed round$534K, Jan 2026 |
Neobank for global remote workers | 38 | +19% | +31% | 0 | $1.6M | Grant$60K, Jun 2024 |
Restaurant software that actually works | 37 | +42% | +118% | YC | $500K | YC investment$500K, Sep 2024 |
Production-ready document processing | 37 | +42% | +131% | 0 | $17.5M | Series A$17M, Jun 2025 |
Models that keep learning | 36 | −10% | −16% | 0 | $8M | Seed$8M, May 2024 |
AI-powered care for seniors with chronic disease | 35 | +3% | +40% | 6 | $500K | YC investment$500K, Mar 2023 |
Enterprise-Grade OpenTelemetry | 35 | +21% | 0 | $13.5M | Series A$13M, Sep 2024 | |
Developing long-lasting drug formulations 50% faster | 35 | −5% | −5% | 0 | $16.5M | Series A$12M, Mar 2025 |
AI Wealth Manager | 34 | +3% | +26% | YC | $2.7M | Seed$2.6M, May 2023 |
Open source LLM engineering platform | 33 | +74% | +94% | 0 | $4M | Seed$4M, Nov 2023 |
Our mission is to make Voice AI accessible and useful to all. | 33 | −3% | −15% | 0 | $23.6M | Seed$21M, Nov 2024 |
AI-Powered Accounting | 32 | −3% | +3% | YC | $16.5M | Series A$13M, Dec 2024 |
| 32 | −3% | −20% | 0 | $25.5M | Series A$20M, Jul 2025 | |
Automate data-driven slide decks and documents with AI | 31 | +11% | +3% | YC | $12.9M | Series A$11M, Oct 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
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).