The 43 YC W24 companies whose latest reported round, after their YC batch and in the last 12 months, was the largest.
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 |
|---|---|---|---|---|---|---|---|
| 1 | The AI for Financial Services. | 263 | +49% | +217% | 5 | $87.5M | Undisclosed round$75M, Aug 2026 |
| 2 | The fastest way to run your GitHub Actions | 65 | 9 | $125M | Series C$66M, Oct 2026 | ||
| 3 | The multiplayer AI agent builder. Let anyone build, IT controls access | 51 | +28% | +122% | 8 | $70.1M | Series B$50M, Mar 2026 |
| 4 | The agentic operating system for legal work | 980 | +81% | +321% | 123 | $866M | Series D$50M, Apr 2026 |
| 5 | AI code review agent with complete context of your codebase | 45 | +61% | +125% | 16 | $80.3M | Series B$50M, Aug 2026 |
| 6 | Supersonics for the new Jet Age | 71 | +51% | +137% | 45 | $27.6M | Series B$27.1M, Jul 2026 |
| 7 | AI agents for healthcare admin | 22 | +16% | +100% | 10 | $23.5M | Series A$20M, Mar 2026 |
| 8 | Agentic Marketing Platform | 29 | +32% | +93% | YC | $20.9M | Series A$18.7M, Jun 2026 |
| 9 | Marketplace for America's most essential assets | 230 | +46% | +150% | 2 | $22.8M | Series B$17.8M, Sep 2026 |
| 10 | AI Time Platform for Law Firms | 42 | +100% | +320% | 9 | $19.6M | Series A$16M, Mar 2026 |
| 11 | Authoring documents for life sciences in minutes, not months. | 28 | +40% | +211% | 1 | $16.5M | Series A$16M, Apr 2026 |
| 12 | Modern OS for the financial back office. | 37 | +61% | +185% | 9 | $20M | Series A$15.5M, May 2026 |
| 13 | Mo, the AI QA engineer that bug-bashes your app before every release | 55 | +17% | 5 | $19.2M | Series A$15M, Nov 2025 | |
| 14 | The relationship intelligence platform for enterprise revenue | 29 | +107% | +142% | 3 | $19.5M | Series A$15M, Jul 2026 |
| 15 | Sentry for AI Agents | 19 | +58% | +138% | 2 | $15M | Series A$15M, Sep 2026 |
| 16 | Modern health insurance for dual income families | 42 | +83% | +147% | YC | $14.5M | Series A$14M, Jul 2026 |
| 17 | AI Inference Platform for Drug Discovery | 21 | +31% | +91% | YC | $13.6M | Series A$13.6M, Feb 2026 |
| 18 | Elevated mRNA for transformative medicines. | 7 | 0% | +17% | 0 | $13.5M | Seed$13M, May 2026 |
| 19 | Give your voice agents a face | 11 | +38% | +83% | 0 | $10.5M | Seed$10.5M, Dec 2025 |
| 20 | The AI communication layer for healthcare | 31 | +48% | +48% | 1 | $10.5M | Seed$10M, Sep 2026 |
| 21 | Risotto auto-solves IT support requests using AI | 19 | +6% | +111% | 0 | $10.5M | Seed$10M, Jan 2026 |
| 22 | Frontier models and agents you can learn from, audit, and steer. | 13 | −13% | −13% | 0 | $9.8M | Seed$9.3M, Dec 2025 |
| 23 | Enterprise AI customer support | 35 | +21% | +289% | 1 | $9.1M | Seed$7M, Jan 2026 |
| 24 | Agent-Driven Engineering | 11 | +22% | YC | $5.6M | Seed$5.6M, Dec 2025 | |
| 25 | A reimagined workspace with AI at its core | 23 | YC | $7M | Series A$5M, Apr 2026 | ||
| 26 | The developer platform for fast and reliable browser agents | 7 | YC | $5.5M | Seed$5M, Mar 2026 | ||
| 27 | Open-source, extensible AI gateway with observability and evals | 22 | +47% | +144% | YC | $5.5M | Seed$5M, Mar 2026 |
| 28 | Cargo Theft and Fraud Prevention Platform | 8 | +14% | −11% | YC | $4M | Seed$4M, Oct 2026 |
| 29 | Autonomous offensive and defensive cybersecurity platform | 33 | +27% | +38% | YC | $6.2M | Seed$3.6M, Jan 2026 |
| 30 | Curing and preventing type 1 diabetes | 7 | −30% | −22% | YC | $3M | Seed$3M, Mar 2026 |
| 31 | Transparent, AI-powered healthcare TPA. | 20 | +11% | +43% | YC | $2.1M | Seed$2.1M, Jan 2026 |
| 32 | Applied AI Data Research Lab Encoding Human Expertise into Machines… | 9 | +50% | +50% | YC | $2.5M | Pre-seed$2M, Oct 2026 |
| 33 | AI-enabled procurement for government | 12 | +9% | +9% | YC | $2M | Series A$1.5M, Jan 2026 |
| 34 | Global neobank for emerging markets | 147 | +27% | +34% | 0 | $1.5M | Undisclosed round$1.5M, Jan 2026 |
| 35 | Deploy trustworthy data agent that know your business | 2 | YC | $500K | Seed$500K, Jan 2026 | ||
| 36 | An all-in-one platform for building internal agents & workflows | 26 | +4% | +8% | 0 | $500K | Seed$500K, Jan 2026 |
| 37 | AI system design tools for dev teams | 6 | 0 | $500K | Seed$500K, Jan 2026 | ||
| 38 | The single platform to run all healthcare operations | 16 | −6% | +33% | YC | $500K | Seed$500K, Jan 2026 |
| 39 | AI platform for phone-first sellers | 18 | +20% | +100% | YC | $500K | Seed$500K, Jan 2026 |
| 40 | The AI operating system for commodity operations | 12 | +71% | +71% | YC | $500K | Undisclosed round$500K, Jan 2026 |
| 41 | AI Employees who love overtime | 82 | 0 | $500K | Seed$500K, Jan 2026 | ||
| 42 | Personalized prevention using genetics and AI | 1 | YC | $500K | Seed$500K, Jan 2026 | ||
| 43 | Yarn is the video product for agentic GTM teams. | 13 | +86% | +160% | YC | $500K | Seed$500K, Jan 2026 |
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).