All 227 companies in Y Combinator's Summer 2026 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 |
|---|---|---|---|---|---|---|
We are building an AI-native telemedicine clinic for addiction. 🌻 | 71 | +18% | +73% | 1 | $1.5M | Seed (before YC)$1.5M, Oct 2025 |
AI-Native Medical Group for Mental Health | 26 | Â | Â | YC | $2M | Seed$2M, Sep 2026 |
Agentic OS for e-commerce operations | 18 | +29% | +125% | YC | $500K | YC investment$500K, Sep 2026 |
Metal manufacturing, faster, cheaper, and more versatile. | 16 | +167% | Â | 0 | ||
AI agents to run primary healthcare operations | 16 | +45% | +100% | 0 | $500K | YC investment$500K, Jun 2026 |
Rocket cargo delivery to contested environments | 16 | +23% | +33% | 2 | $11M | Seed$11M, Sep 2026 |
The training data R&D engine for physical AI | 15 | Â | Â | 0 | ||
Autonomous construction on Earth and beyond | 15 | +15% | +50% | 2 | $4.5M | YC investment$500K, Aug 2026 |
Watch and create anime | 13 | Â | Â | YC | ||
AI engineer that debugs and fixes production incidents in realtime | 12 | −8% |  | 0 | $1.5M | Seed (before YC)$1.5M, Dec 2022 |
The AI operating system for radiology networks | 11 | +38% | Â | 0 | $500K | YC investment$500K, Sep 2026 |
AI employees that run home appliance repair companies | 10 | Â | Â | 4 | ||
Network for Physical AI Data Business | 10 | +25% | +100% | 1 | ||
Grok bot for GTM & Revenue teams | 10 | −17% |  | 0 | ||
AI collections agency for late stage portfolios | 9 | −10% | +29% | 0 | ||
AI career agent that finds matching jobs & applies on your behalf | 8 | Â | Â | YC | $500K | YC investment$500K, Apr 2026 |
Autonomous offensive security agents. The best defense is offense | 8 | Â | Â | 0 | ||
Nervous System for Physical AI | 8 | Â | Â | 0 | $657K | Pre-seed$657K, Jul 2026 |
Modernizing Chip Manufacturing Infrastructure | 8 | −11% |  | 0 | $500K | YC investment$500K, Jun 2026 |
Making Diamond Semiconductors | 7 | Â | Â | 0 | ||
Autonomous AI defense system for cyber attack | 7 | Â | Â | 0 | $500K | YC investment$500K, Jul 2026 |
We turn waste gases into supply-secure chemicals | 7 | +17% | +17% | 0 | ||
Web data API for agents | 7 | Â | Â | 0 | $500K | YC investment$500K, May 2026 |
AI-native procurement services for the physical economy | 7 | Â | Â | 0 | $1M | Pre-seed$1M, Jun 2026 |
Superintelligence for Infrastructure | 6 | Â | Â | YC | ||
The AI-native trading company: factory prices, delivered, one number | 6 | +20% | Â | 0 | ||
The AI BPO for financial servies, run by computer-use agents | 6 | Â | Â | 0 | ||
OpenRouter for Voice AI: one API, every call on the best speech model | 6 | Â | Â | YC | ||
Fully automated growth for small business | 6 | Â | Â | YC | $500K | YC investment$500K, Jul 2026 |
Building Products and Datasets for Frontier Models | 6 | Â | Â | 0 | ||
AI-native debt collection company | 6 | 0% | 0% | YC | $500K | YC investment$500K, Aug 2026 |
Supply chain compliance and cost savings | 6 | −40% | −50% | 0 | $20K | Grant (before YC)$20K, Mar 2025 |
LinkedIn for agents | 6 | Â | Â | YC | $500K | YC investment$500K, Jun 2026 |
Local creators for local businesses | 6 | Â | Â | YC | ||
Agentic procurement & inventory for deep tech teams. | 6 | 0% | 0% | 0 | ||
Agentic data layer for manufacturing & process industries. | 6 | Â | Â | YC | $700K | Pre-seed$700K, Jul 2026 |
AI Brokers for Industrial Trade | 6 | Â | Â | 0 | $1.1M | Pre-seed$1.1M, Jun 2026 |
AI-native materials discovery powered by unpublished experimental data | 6 | Â | Â | YC | $500K | YC investment$500K, Jul 2026 |
Advancing model capabilities for critical infrastructure | 6 | Â | Â | 0 | $500K | YC investment$500K, Sep 2026 |
Autonomous rovers to make the ‘Google Maps’ of underground utilities | 6 |  |  | 0 | $500K | YC investment$500K, Mar 2026 |
Autonomous IT Delivery | 5 | Â | Â | 0 | ||
The robot workforce for infrastructure of the AI era | 5 | Â | Â | 0 | ||
AI-native pharma company | 5 | Â | Â | 0 | $500K | YC investment$500K, Jul 2026 |
We help lawyers start and scale AI-native law firms. | 5 | Â | Â | 0 | ||
USA-made magnetics for robotics and defense. | 5 | Â | Â | 0 | $500K | YC investment$500K, Aug 2026 |
Making Defense Manufacturing Faster and Cheaper | 5 | Â | Â | YC | ||
The company brain for construction companies | 5 | Â | Â | 0 | $620K | YC investment$500K, Jul 2026 |
Agentic Hotel Operating System | 5 | Â | Â | 0 | ||
CrowdStrike for AI Agents | 5 | Â | Â | 0 | $700K | Pre-seed (before YC)$700K, May 2026 |
AI-native learning for every school | 5 | Â | Â | YC |
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
227 companies were in Y Combinator's Summer 2026 batch (S26); 226 are active.
10 companies posted roles in the last 60 days, led by Bernard (4 roles), Nori (3 roles) and Hop Aero (2 roles). 47 mark themselves as hiring on YC's directory.
By team growth over 6 months (10+ people): Ultrasonium (+167%), Care GP (+45%) and Avoca Systems (+38%).
Largest latest rounds in the last 12 months, after their YC batch: Hop Aero ($11M), Robocurve ($10M) and OpenRelay ($9.8M).