All 248 companies in Y Combinator's Winter 2024 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 |
|---|---|---|---|---|---|---|
The agentic operating system for legal work | 980 | +81% | +321% | 123 | $866M | Series D$50M, Apr 2026 |
AI employees that take on real work, starting with sales | 342 | +75% | +4,786% | 2 | $46.1M | Series A$25M, Apr 2025 |
The AI for Financial Services. | 263 | +49% | +217% | 5 | $87.5M | Undisclosed round$75M, Aug 2026 |
Marketplace for America's most essential assets | 230 | +46% | +150% | 2 | $22.8M | Series B$17.8M, Sep 2026 |
Supercharge Your Contact Center Operations with AI Phone Agents | 196 | +45% | +109% | 20 | $4.7M | Seed$4.6M, Apr 2024 |
Global neobank for emerging markets | 147 | +27% | +34% | 0 | $1.5M | Undisclosed round$1.5M, Jan 2026 |
The complete agentic document platform | 99 | +60% | +175% | 14 | $108M | Series B$75M, Oct 2025 |
AI Workforce for the Insurance Industry | 71 | +42% | +209% | 5 | $30M | Series A$25M, Oct 2025 |
Supersonics for the new Jet Age | 71 | +51% | +137% | 45 | $27.6M | Series B$27.1M, Jul 2026 |
AI Applied Research | 62 | −2% | +5% | 0 | $17.5M | Series A$17M, Jun 2025 |
AI lipsync tool for video content creators | 61 | +42% | +56% | 0 | $6.4M | Grant$250K, Oct 2024 |
Earn airline miles on hotels and everyday spend. | 58 | +49% | +38% | 1 | Undisclosed roundJan 2026 | |
Mo, the AI QA engineer that bug-bashes your app before every release | 55 | +17% | 5 | $19.2M | Series A$15M, Nov 2025 | |
Mobile carrier for businesses in Brazil | 53 | +23% | +39% | 0 | $3.3M | Seed$1.9M, May 2024 |
The multiplayer AI agent builder. Let anyone build, IT controls access | 51 | +28% | +122% | 8 | $70.1M | Series B$50M, Mar 2026 |
Alex is the AI recruiter for hiring great people. | 47 | +4% | +31% | 3 | $20.5M | Series A$17M, Sep 2025 |
AI code review agent with complete context of your codebase | 45 | +61% | +125% | 16 | $80.3M | Series B$50M, Aug 2026 |
AI Time Platform for Law Firms | 42 | +100% | +320% | 9 | $19.6M | Series A$16M, Mar 2026 |
Modern health insurance for dual income families | 42 | +83% | +147% | YC | $14.5M | Series A$14M, Jul 2026 |
All-in-one AI platform for outbound sales | 38 | −7% | +9% | 1 | $1.6M | YC investment$500K, Apr 2024 |
AI-native investment bank for small businesses | 38 | +31% | +58% | YC | $16.8M | Series A$12M, Jul 2025 |
Modern OS for the financial back office. | 37 | +61% | +185% | 9 | $20M | Series A$15.5M, May 2026 |
Enterprise AI customer support | 35 | +21% | +289% | 1 | $9.1M | Seed$7M, Jan 2026 |
AI for risk and compliance | 34 | +21% | +70% | 1 | $3.5M | Seed$3M, Aug 2024 |
Autonomous offensive and defensive cybersecurity platform | 33 | +27% | +38% | YC | $6.2M | Seed$3.6M, Jan 2026 |
Speaking coach for non-native English professionals | 32 | +14% | +14% | 0 | $2.5M | Seed$2M, Jun 2024 |
The AI communication layer for healthcare | 31 | +48% | +48% | 1 | $10.5M | Seed$10M, Sep 2026 |
Frontier coding data for training and evaluating LLMs | 31 | −3% | +55% | 0 | $18.2M | Series A$15M, Oct 2025 |
Card issuer processor and banking stack for businesses in Sub-… | 30 | +7% | +30% | 0 | $500K | YC investment$500K, Jan 2024 |
Control what AI says about you | 30 | +3% | YC | $5.5M | YC investment$500K, Feb 2024 | |
The relationship intelligence platform for enterprise revenue | 29 | +107% | +142% | 3 | $19.5M | Series A$15M, Jul 2026 |
Agentic Marketing Platform | 29 | +32% | +93% | YC | $20.9M | Series A$18.7M, Jun 2026 |
Open Source AI Chat | 28 | −24% | −18% | 0 | $10.5M | Seed$10M, Mar 2025 |
AI applied research lab building synthetic sapience; human-like AI | 28 | −12% | −15% | 0 | $6.7M | Seed$6.7M, Oct 2025 |
Business banking for cross-border SMBs & Startups | 28 | +40% | +47% | YC | $1.9M | Pre-seed$1.9M, Apr 2024 |
Authoring documents for life sciences in minutes, not months. | 28 | +40% | +211% | 1 | $16.5M | Series A$16M, Apr 2026 |
AI Agents for Hospitality | 27 | +4% | +4% | YC | $3.6M | Seed$3.1M, Apr 2025 |
Validated mental health support in your pocket, anytime. | 26 | +30% | +53% | YC | SeedMar 2024 | |
An all-in-one platform for building internal agents & workflows | 26 | +4% | +8% | 0 | $500K | Seed$500K, Jan 2026 |
Go from 3D models to CAD drawings using AI | 25 | −4% | +108% | 0 | $500K | YC investment$500K, Feb 2024 |
AI Creative Strategist | 24 | +14% | +50% | YC | $2.6M | YC investment$500K, Mar 2024 |
A reimagined workspace with AI at its core | 23 | YC | $7M | Series A$5M, Apr 2026 | ||
Open-source, extensible AI gateway with observability and evals | 22 | +47% | +144% | YC | $5.5M | Seed$5M, Mar 2026 |
AI agents for healthcare admin | 22 | +16% | +100% | 10 | $23.5M | Series A$20M, Mar 2026 |
An AI-powered supply chain compliance engine | 22 | +10% | +69% | YC | $3.8M | Seed$3.3M, Jun 2024 |
AI Inference Platform for Drug Discovery | 21 | +31% | +91% | YC | $13.6M | Series A$13.6M, Feb 2026 |
Open source alternative to AWS | 20 | +18% | +18% | YC | $16M | Seed$16M, Mar 2024 |
Accelerate Medication Access with AI | 20 | +54% | +150% | 14 | Undisclosed roundApr 2024 | |
LLM Security and Compliance | 20 | +18% | +33% | YC | $3.2M | Seed$3.2M, Apr 2024 |
Data services for finance and operations at PE-backed companies. | 20 | +25% | +54% | YC | $2.7M | Seed$2.2M, Jul 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
248 companies were in Y Combinator's Winter 2024 batch (W24); 208 are active.
33 companies posted roles in the last 60 days, led by Legora (123 roles), Astro Mechanica (45 roles) and Retell AI (20 roles). 93 mark themselves as hiring on YC's directory.
By team growth over 6 months (10+ people): Centralize (+107%), PointOne (+100%) and Zep AI (+100%).
Largest latest rounds in the last 12 months, after their YC batch: Model ML ($75M), Blacksmith ($66M) and Legora ($50M).