The 21 YC F24 companies whose team grew the most in the last 6 months (active companies with 10+ people).
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 deterministic layer for frontier intelligence | 13 | +117% | YC | $7.2M | Seed$7.2M, Feb 2025 | |
| 2 | The high-performance file system that connects AI to data | 17 | +70% | +240% | 0 | $18.2M | Series A$11M, Apr 2026 |
| 3 | AI copilot for construction estimators | 10 | +67% | +67% | YC | $500K | YC investment$500K, Dec 2024 |
| 4 | intelligent interactions | 51 | +65% | +132% | 13 | $18.6M | Seed$15M, Jul 2026 |
| 5 | Enterprise systems delivery without the turbulence. | 19 | +58% | +138% | 2 | $7.7M | Seed$7.2M, Aug 2025 |
| 6 | AI RCM. Increase net revenue by 16%. | 19 | +58% | +171% | 1 | $4.8M | Seed$4.3M, Nov 2025 |
| 7 | Personal doctors through chat | 12 | +50% | +71% | 0 | $500K | YC investment$500K, Jan 2026 |
| 8 | Wire Harnesses in as little as 7 days | 13 | +44% | 1 | |||
| 9 | Building AI employees for car dealers | 23 | +44% | +77% | 0 | $1.5M | Pre-seed$1.5M, Dec 2024 |
| 10 | Real-time B2B data via simple APIs | 47 | +38% | +96% | YC | $12M | Seed$6M, Oct 2025 |
| 11 | The legal backoffice for every company. For founders and AI agents. | 30 | +30% | +150% | 4 | $3.3M | Seed$3.3M, Apr 2026 |
| 12 | Agents for dental operations | 10 | +25% | +11% | YC | ||
| 13 | The Mobile Development Platform | 12 | +20% | +140% | YC | $1.1M | Pre-seed$1.1M, Oct 2024 |
| 14 | AI Workers for Healthcare Orgs to Find, Call & Schedule More Patients. | 12 | +20% | +100% | YC | $500K | YC investment$500K, Dec 2024 |
| 15 | AI Compliance Analysts for Banks & Fintechs | 25 | +19% | +127% | 0 | $7.6M | Seed$7.1M, Feb 2026 |
| 16 | Find and move money after a death | 14 | +17% | +27% | 0 | $6.5M | Seed$6.5M, Dec 2024 |
| 17 | Enter your domain & Origami gets you customers. | 22 | +16% | +16% | 0 | $2.5M | Convertible note$2M, Jun 2025 |
| 18 | AI tutors for students. | 90 | +15% | +23% | 0 | $3.9M | Seed$3.4M, Mar 2025 |
| 19 | AI-powered demand forecasting for retail | 18 | +13% | +38% | 0 | $3.7M | Seed$3.2M, Oct 2025 |
| 20 | Voice AI and Chat AI agents: Testing and Observability | 19 | +12% | +36% | 1 | ||
| 21 | We help medical practices become AI-native | 32 | +10% | +45% | 1 | $4.4M | Seed$3.9M, Dec 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
94 companies were in Y Combinator's Fall 2024 batch (F24); 88 are active.
11 companies posted roles in the last 60 days, led by telli (13 roles), Beglaubigt.de (4 roles) and Laminar (2 roles). 39 mark themselves as hiring on YC's directory.
By team growth over 6 months (10+ people): CTGT (+117%), Archil (+70%) and Fresco (+67%).
Largest latest rounds in the last 12 months, after their YC batch: telli ($15M), Archil ($11M) and Sphinx ($7.1M).