The 25 YC S24 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 | Data centers in space | 66 | +57% | +128% | YC | $444M | Series A$250M, Aug 2026 |
| 2 | AI app builder that turns your ideas into monetizable software. | 410 | +34% | +193% | 33 | $230M | Series C$130M, Jul 2026 |
| 3 | Corgi is building an AI financial infrastructure company | 402 | +88% | +272% | 16 | $439M | Series B$64M, Sep 2026 |
| 4 | Practical, general-purpose robots for repetitive industrial tasks | 38 | +100% | +192% | YC | $62M | Series A$50M, Oct 2026 |
| 5 | Growth through always‑on consumer understanding | 103 | +54% | +472% | 9 | $55.8M | Series A$50M, Sep 2026 |
| 6 | Simulation & Evaluation that scales voice and chat AI agents | 26 | +13% | +136% | 2 | $31.8M | Series A$28M, Jun 2026 |
| 7 | AI employee for consumer lending | 19 | +58% | +111% | 8 | $24.5M | Series A$24M, Sep 2026 |
| 8 | AI agent for Accounts Receivable | 44 | +76% | +389% | 2 | $21.7M | Undisclosed round$17M, Aug 2026 |
| 9 | The organic growth engine for financial advisors | 41 | +32% | +173% | 3 | $21.8M | Series A$17M, Dec 2025 |
| 10 | Automating Deal Decks for Commercial Real Estate Brokers | 35 | +17% | +106% | 8 | $21.3M | Series A$16.5M, Jul 2026 |
| 11 | AI call centers | 47 | +62% | +135% | 4 | $16.5M | Series A$16M, Apr 2026 |
| 12 | AI voice that sells | 33 | +65% | +313% | 12 | $14.5M | Seed$14M, Feb 2026 |
| 13 | The GPU sandbox company | 14 | +8% | +56% | YC | $17.6M | Series A$13M, Aug 2026 |
| 14 | Genetically engineered viruses that teach your immune system to kill… | 18 | +6% | +38% | 0 | $9.7M | Seed$9.1M, Jun 2026 |
| 15 | Automate security and privacy reviews | 25 | +47% | +67% | 2 | $13.4M | Seed$8.4M, Feb 2026 |
| 16 | An AI-powered CAD software | 6 | −25% | YC | $9.4M | Seed$7.4M, Oct 2026 | |
| 17 | In-Space Refueling | 6 | 0% | 3 | $6.8M | Seed$6.3M, Jun 2026 | |
| 18 | The autonomous data engineer for the mid-market | 16 | +45% | +129% | 5 | $6.3M | Seed$5.8M, Sep 2026 |
| 19 | Healthcare personal assistants for Medicare patients. | 76 | 1 | $8.4M | Seed$5M, Mar 2026 | ||
| 20 | Renewable infrastructure deployment at scale. | 12 | +140% | 0 | $4.4M | Seed$3.9M, Apr 2026 | |
| 21 | Create professional videos in minutes with AI, online or via API | 13 | 0% | −13% | YC | $3.3M | Seed$3.2M, Sep 2026 |
| 22 | Understand why your AI agent breaks. Iterate fast to fix it. | 5 | 0% | 0 | $3.5M | Seed$3M, Mar 2026 | |
| 23 | Helping industrial manufacturers win more business at the best price. | 6 | 1 | $2.5M | Seed$2.5M, Jan 2026 | ||
| 24 | The Agent Analytics Platform | 5 | −29% | −44% | 0 | $2.2M | Pre-seed$2.2M, May 2026 |
| 25 | Find & resolve issues in data center engineering & operations using AI | 14 | +40% | +100% | 2 | $500K | Undisclosed round$500K, Jul 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 Summer 2024 batch (S24); 232 are active.
35 companies posted roles in the last 60 days, led by Emergent (33 roles), Corgi (16 roles) and Simple AI (12 roles). 97 mark themselves as hiring on YC's directory.
By team growth over 6 months (10+ people): Plume (+140%), Codes Health (+103%) and Ultra (+100%).
Largest latest rounds in the last 12 months, after their YC batch: Starcloud ($250M), Emergent ($130M) and Corgi ($64M).