Six months of YC, measured
Every company in the Y Combinator directory as it stood on 2026-02-28, compared against the live directory on 2026-10-04. This is what actually happened to a cohort of 5,737 startups over half a year.
793
added to the directory
84
acquired
73
marked inactive
652
repositioned their pitch
243
delisted
Outcomes by cluster
Of the classified companies present in February, how many were acquired, went inactive, or rewrote their pitch. Clusters with at least 20 companies.
| Cluster | In February | Acquired | Inactive | Rewrote pitch |
|---|---|---|---|---|
| Consumer | 783 | 6 | 4 | 44 (6%) |
| B2B SaaS | 756 | 10 | 13 | 79 (10%) |
| Vertical AI agents | 700 | 18 | 8 | 218 (31%) |
| Fintech | 592 | 10 | 8 | 55 (9%) |
| Developer tools | 474 | 6 | 8 | 57 (12%) |
| Healthcare and bio | 442 | 6 | 6 | 43 (10%) |
| Commerce and marketplaces | 419 | 4 | 7 | 27 (6%) |
| Robotics and physical world | 253 | 2 | 3 | 35 (14%) |
| Agent infrastructure | 239 | 9 | 4 | 109 (46%) |
| Security and compliance | 171 | 2 | 2 | 26 (15%) |
| Data for AI | 167 | 1 | 2 | 31 (19%) |
| Horizontal AI assistants | 127 | 4 | 3 | 30 (24%) |
| Climate and energy | 118 | 1 | 2 | 8 (7%) |
| AI infra and compute | 116 | 3 | 3 | 26 (22%) |
| Defense and space | 63 | - | - | 10 (16%) |
| Other | 43 | 1 | - | 0 (0%) |
Repositioning
Active companies whose public one-liner changed beyond a copy edit, ranked by how little the old and new wording overlap. A rewrite is a signal, not proof, of a pivot - but the sharpest ones usually are.
W17 · Commerce and marketplaces
Connects workplaces with professionals nearby.
Every shift, Covered.
W18 · Vertical AI agents
Radically simplifying cross-border logistics between USA & Mexico
Your AI partner for North America truckload freight
S18 · B2B SaaS
AI powered Lab Operation Management SaaS Platform
AIoT monitoring, workflow, and evidence systems for regulated labs.
S20 · Commerce and marketplaces
Turn customer emails into ERP-ready orders.
Organizing the world's inventory.
S21 · Data for AI
We automate pricing for eCommerce and on-demand service companies
One API to get clean data from any website for your AI agents at scale
S21 · Developer tools
The Fastest Tool for Automating Geospatial Production
AI CAD Software for Civil Engineering
S24 · Vertical AI agents
Real time, source of truth for every product screen and user flow
Automating workflows.
F25 · Agent infrastructure
The world's first human superintelligence community
Training Data for Recursive Self-Improvement
W21 · Vertical AI agents
AI-powered healthcare information
AI workers that book, scribe, code, interpret, and answer clinicians
W22 · Security and compliance
Cinder | Responsible AI, Trust & Safety, and Data Labeling At Scale
Infrastructure to protect companies from AI abuse
S23 · Vertical AI agents
No-Code Generative AI Automations Platform
AI Operating System for Private Market Investors
S24 · Developer tools
We run and deploy code your AI wrote
The most powerful sandboxes for AI Agents
S22 · B2B SaaS
Expanding Payment Flexibility and Lowering Rates for Merchants
Client management, communication, and projects in one platform.
W26 · Agent infrastructure
Adaptive Healthcare Admin Agents
Turning all software into agent-first APIs
S25 · Agent infrastructure
The frontend coding agent for real codebases.
The Open Source Agentic IDE
W23 · Horizontal AI assistants
AI Employees for Finance
Relationship Coverage for Deal Teams
W25 · Vertical AI agents
An SDK to run transformer models anywhere
Building agents that reads logs and fixes issues on your behalf.
S23 · Healthcare and bio
Automating repetitive processes in healthcare
Navigating patients to the right place, first time.
W23 · Developer tools
Transform any software to multi-cloud SaaS in minutes not years
Build your control plane to deploy your product in your customer VPC…
S23 · Healthcare and bio
AI-powered platform automating medical practice operations
The all-in-one EMR built for med spas and elective care
S24 · Consumer
Bloodwork and personalized insights to help you live longer
At-cost lab testing marketplace that profits when you test less
W26 · Vertical AI agents
AI-native workspace for municipal development review
The AI operating system for the built world
S22 · Agent infrastructure
Reliably integrate with websites that don’t have official APIs
Code-first scrapers and RPAs — built and maintained by AI
W25 · Horizontal AI assistants
We are rebuilding photoshop with an AI-voice interface.
awen translates intent into exceptional visuals through conversation
S22 · Horizontal AI assistants
All-in-one Payroll, HR and IT for India
Plan, edit and turn creative direction into videos people watch
S25 · Security and compliance
Vulnerability Management for Human Risk
Your always-on red team.
S22 · Vertical AI agents
Enabling discovery to be done entirely in-house
Superpowers for litigators
S21 · Fintech
A safe and friendly way to play crypto games.
The global operating account you truly deserve.
Acquired
Status moved to acquired since February (84 companies).
- Remedy · Vertical AI agentsF25
- Metis · Agent infrastructureS25
- Nexa Labs · Robotics and physical worldS25
- Opennote · Horizontal AI assistantsS25
- Blaxel · Agent infrastructureX25
- Galen AI · Vertical AI agentsX25
- Kirana AI · Vertical AI agentsX25
- TensorPool · AI infra and computeW25
- ZeroEntropy · AI infra and computeW25
- Curo · Climate and energyF24
- Central · Vertical AI agentsS24
- Midship · Vertical AI agentsS24
- Browser Buddy · ConsumerW24
- Consul · FintechW24
- Focal · ConsumerW24
- Lucite · Vertical AI agentsW24
- Lumetric · Vertical AI agentsW24
- Onyx · Horizontal AI assistantsW24
- Sample · Healthcare and bioW24
- Soundry AI · ConsumerW24
- Speck · Horizontal AI assistantsW24
- CheqUPI · FintechS23
- Continue · Developer toolsS23
- Dioxus Labs · Developer toolsS23
- Fragment · B2B SaaSS23
Went inactive
Active in February, marked inactive today (73 companies).
- Kyten Technologies · Robotics and physical worldW26
- Mendral · Vertical AI agentsW26
- Dome · Commerce and marketplacesF25
- Rovr · Developer toolsF25
- TectoAI · Agent infrastructureS25
- Percival · Data for AIX25
- Altrina · Vertical AI agentsW25
- Baseline AI · Vertical AI agentsS24
- camfer · Developer toolsS24
- Lilac Labs · Vertical AI agentsS24
- Pre · Horizontal AI assistantsS24
- Aedilic · Security and complianceW24
- Glimmer · Data for AIW24
- K-Scale Labs · Robotics and physical worldW24
- Preloop · Developer toolsW24
- Tesseral · Agent infrastructureW24
- Thorntale · Horizontal AI assistantsW24
- Tusk · Developer toolsW24
- Atla · Agent infrastructureS23
- Leafpress · Climate and energyS23
- Synch · B2B SaaSS23
- Fetchr · ConsumerW23
- Gluetrail · Developer toolsW23
- Homeflow · B2B SaaSW23
- Peeba · Commerce and marketplacesW23
Added since February, by batch
New entries in the directory - the newest batches filling up, plus late additions to older ones.
Recently raised
Funding rounds extracted from news feeds. A batch tag means the company is in the radar directory - graduation happening in real time.
unknown · Climate and energy · 2026-10-01
unknown · Robotics and physical world · 2026-09-30
series-a · Consumer · 2026-09-29
unknown · Fintech · 2026-09-24
seed · Vertical AI agents · 2026-09-23
debt · Consumer · 2026-09-23
unknown · Vertical AI agents · 2026-09-22
series-a · Vertical AI agents · 2026-09-22
unknown · Climate and energy · 2026-09-21
unknown · Other · 2026-09-18
Survival by accelerator
Share of companies whose website still answers. Only YC publishes company statuses; a dead site is the one survival signal measured identically across every program. "Alive" includes sites behind bot walls.
| Program | Sites alive | Alive | Checked | 3y+ cohorts alive |
|---|---|---|---|---|
| Y Combinator | 84.3% | 5,262 | 6,243 | 78.6% |
| Plug and Play | 77.9% | 4,293 | 5,509 | - |
| Techstars | 82.9% | 3,693 | 4,455 | 80.9% |
| 500 Global | 80.8% | 1,782 | 2,206 | 79.7% |
| antler | 90.1% | 969 | 1,076 | 87.2% |
| SOSV | 78.7% | 621 | 789 | 78.3% |
| ef | 89.9% | 453 | 504 | 87.5% |
| skydeck | 77.4% | 264 | 341 | 73.6% |
| a16z speedrun | 95.3% | 324 | 340 | - |
| seedcamp | 93.3% | 307 | 329 | 92.4% |
| spc | 96.6% | 199 | 206 | 96.4% |
| pear | 96.5% | 193 | 200 | - |
| aigrant | 89.1% | 82 | 92 | 85.7% |
Sweep covers companies with a known domain; unreachable can mean slow hosting, so treat shares as an upper bound on mortality, not an exact one. The 3y+ column keeps only cohorts old enough to have had time to die.
snapshot: accelerator export 2026-02-28 · live: YC public directory, synced daily · site liveness swept in-house