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YC X26 companies (Spring 2026)

All 192 companies in Y Combinator's Spring 2026 batch, with team size, growth, open roles and funding.

Updated weekly, last on November 9, 2026. Roster from Y Combinator's public directory.

Hiring the mostlast 60 days
10 roles
9 MothersX26
  1. 2Tolmo5
  2. 3Madrone5
See all 13
Fastest growingteam, 6 months
+233%
InstaAgentX26
  1. 2Hub+194%
  2. 3Tasklet+160%
See all 18
Shrinkingteam, 12 months
−3%
Asendia AIX26
Raised the mostlast 12 months
$27M
PloyX26
  1. 2Tolmo$22M
  2. 3Drafted$16M
See all 20
Companies
192
Active
188
Hiring, last 60 days
13
Open roles, 60 days
34
People on these teams
1,167
Showing 50 of 192 companies
CompanyTeam6 mo12 moOpen rolesTotal raisedLast round
Real-world training data for frontier AI labs and robotics.
53+194%+152%YC
AI recruiters for staffing agencies
29+4%−3%YC$1MYC investment$500K, Mar 2026
Ploy turns your website into your company's growth engine.
27+93% 2$27MSeed$27M, Jun 2026
Marketplace for AI agents to hire humans.
25  0$12MSeed (before YC)$12M, Feb 2026
Agent native workspace for heavy parallel workflows on the web
24−11%+4%0$751KYC investment$500K, Mar 2026
Counter Drone Systems. $1.6m sales. We delivered for the DoW.
22+120%+214%10$500KYC investment$500K, Jun 2026
Patreon for AI Originals
22+144% 0$500KYC investment$500K, Jun 2026
AI Scheduling for Short Haul Trucks
21+91%+91%0$500KYC investment$500K, Jun 2026
Vanta for physical products
21+31%+200%1$13.6MSeed$11M, Sep 2026
AI-native recruiting agency
20  0$500KYC investment$500K, Dec 2025
Scale marketing campaigns across hundreds of personas
20+233%+300%0$500KYC investment$500K, Jun 2026
Agentic hiring marketplace
16+60% YC$500KYC investment$500K, May 2026
robots & software for farms
16+78% 0$500KYC investment$500K, May 2026
Programmable DNA drug destroying all cancers, unlocking 80% of targets
14  0$500KYC investment$500K, Jun 2026
Computer use agents to deploy enterprise marketing campaigns
14+27%+8%YC$11.8MSeed$9.8M, Jun 2026
Design your home instantly with AI
13+18% 0$17.6MSeed$16M, May 2026
Agents that own the work
13+160% YC$45.8MUndisclosed round$12.8M, Oct 2026
We make the most compact nuclear reactors
13+117% 0$32.1MUndisclosed round$620K, Sep 2026
Tolmo is the AI security platform that secures every layer of cloud…
13+44% 5$22MSeed$22M, Jun 2026
AI-native observability and security platform
12+50% 0$8.5MSeed$8M, Jun 2026
AI Native Sourcing Broker For Overseas Manufacturing
120%0%0$500KYC investment$500K, Mar 2026
Agents that build personal injury cases
11  0$500KYC investment$500K, Jun 2026
AI primary care doctor
10+67% YC$12MPre-seed$12M, May 2026
Plena is the AI operating system for specialty medical practices
10+67%+67%YC$500KYC investment$500K, Jun 2026
Live Evaluation Arenas for Financial Work
9−18%+50%0
Cancer screening without barriers
9+29%+29%1$500KYC investment$500K, Jun 2026
Scalable windows desktop automations
9+29%+80%YC
AI Native Shopify
9  YC$500KYC investment$500K, Jun 2026
AgentRel, Devrel For Agents
9  YC$1.4MSeed$1.3M, Oct 2026
Human Intelligence for Robots
9  YC$500KYC investment$500K, Jun 2026
AI Reservation System for Restaurants
8  YC$500KYC investment$500K, Jun 2026
Human-centered AI for contact centers.
8  2
Robotic pitstops for self-driving cars
8  YC$10.5MSeed$10M, Jun 2026
Real world training envs for healthcare AI models
8  YC$500KYC investment$500K, Jun 2026
AI-Native FDA Regulatory Services
8  0$500KYC investment$500K, Jun 2026
AI Customer Support for Fortune 500-scale enterprises
7+40% 0
AI for Commercial Lending
7−30% YC$500KYC investment$500K, Jun 2026
AI model built for high accuracy deterministic tasks
7+40%+40%YC$2MYC investment$500K, Jun 2026
Let agents talk to your customers
7+17%+17%0
AI agents that interviews every employee to hand context to AI tools.
7  0$500KYC investment$500K, Jun 2026
Fast, smart, accessible 3D ultrasound that anyone can use
7 +40%0$500KYC investment$500K, Jun 2026
Robotics
6  YC
Agent harnesses for asset managers
6  1
iMessage infrastructure for business
6  0
Autonomous insurance brokerage for small businesses
6  1$500KYC investment$500K, Jun 2026
AI Health Assistant for Chronic Illness
6  YC$500KYC investment$500K, Jun 2026
Annotations for robotics data
6  0
Real-world sandboxes to test and train AI agents
6  0$10.5MSeed$10M, Aug 2026
Construction Cost Intelligence.
6  0
the software verification layer for the agentic coding era
6  YC$9.7MSeed$8M, Nov 2026

How this works

1. The roster

Every launched company in YC's public directory, with its batch, status, industry and location. New companies show up the week YC lists them.

2. The numbers

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.

3. The lists

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.

Built with Crustdata. Get your own API key and build your own.

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.

  • Company search for team size, growth and funding
  • Job search with a count by company, for who is hiring and for what
  • A watch that re-runs the search weekly and sends only what changed
# 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

Questions about YC X26 companies

How many YC X26 companies are there?

192 companies were in Y Combinator's Spring 2026 batch (X26); 188 are active.

Which YC X26 companies are hiring?

13 companies posted roles in the last 60 days, led by 9 Mothers (10 roles), Tolmo (5 roles) and Madrone (5 roles). 65 mark themselves as hiring on YC's directory.

Which YC X26 companies are growing fastest?

By team growth over 6 months (10+ people): InstaAgent (+233%), Hub (+194%) and Tasklet (+160%).

Which YC X26 companies raised the most?

Largest latest rounds in the last 12 months, after their YC batch: Ploy ($27M), Tolmo ($22M) and Drafted ($16M).

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