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 2026-09-08. This is what actually happened to a cohort of 5,737 startups over half a year.
696
added to the directory
71
acquired
63
marked inactive
601
repositioned their pitch
218
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 | 788 | 4 | 4 | 40 (5%) |
| B2B SaaS | 757 | 10 | 9 | 75 (10%) |
| Vertical AI agents | 707 | 15 | 8 | 200 (28%) |
| Fintech | 595 | 8 | 7 | 48 (8%) |
| Developer tools | 475 | 6 | 7 | 51 (11%) |
| Healthcare and bio | 444 | 5 | 5 | 40 (9%) |
| Commerce and marketplaces | 419 | 4 | 6 | 23 (5%) |
| Robotics and physical world | 253 | 2 | 3 | 34 (13%) |
| Agent infrastructure | 242 | 7 | 3 | 105 (43%) |
| Security and compliance | 171 | - | 2 | 25 (15%) |
| Data for AI | 167 | 1 | 2 | 26 (16%) |
| Horizontal AI assistants | 129 | 4 | 3 | 31 (24%) |
| Climate and energy | 118 | - | 2 | 4 (3%) |
| AI infra and compute | 117 | 3 | 2 | 25 (21%) |
| Defense and space | 63 | - | - | 9 (14%) |
| 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.
S18 · B2B SaaS
AI powered Lab Operation Management SaaS Platform
AIoT monitoring, workflow, and evidence systems for regulated labs.
F25 · B2B SaaS
The intelligence layer for how your teams use AI
AI agents for the finance back office.
S19 · Healthcare and bio
Helping healthcare workers find their next career opportunity
Workforce platform to recruit, license, credential & manage clinicians
W21 · Robotics and physical world
The world's first AI powered tool and die maker
Software orchestrated mass production of plastics
W23 · B2B SaaS
Air Traffic Control for Warehouses
The operating system for shipping and receiving.
S21 · Developer tools
The Fastest Tool for Automating Geospatial Production
AI CAD Software for Civil Engineering
S24 · B2B SaaS
Confident decisions in days with AI-led interviews.
Growth through always‑on consumer understanding
X25 · Vertical AI agents
24/7 AI Call Center for Home Services
All-In-One AI Growth Partner. Built for Trades.
F25 · Vertical AI agents
AI agents for third-party logistics
AI product specialists for equipment manufacturers
W26 · Robotics and physical world
Algorithmic safety validation tools for autonomy.
Insurance risk layer for physical AI
W26 · AI infra and compute
AI agents for chip design.
Custom silicon for power electronics
W25 · Vertical AI agents
An SDK to run transformer models anywhere
Building agents that reads logs and fixes issues on your behalf.
S22 · B2B SaaS
Expanding Payment Flexibility and Lowering Rates for Merchants
Client management, communication, and projects in one platform.
S22 · Vertical AI agents
The world's first digital concierge for real estate and lending
AI workforce for mortgage
W22 · Security and compliance
Cinder | Responsible AI, Trust & Safety, and Data Labeling At Scale
Infrastructure to protect companies from AI abuse
S23 · Fintech
A modern version of NetSuite
The AI Native ERP for the fastest growing companies.
S22 · Agent infrastructure
Reliably integrate with websites that don’t have official APIs
Code-first scrapers and RPAs — built and maintained by AI
W23 · Horizontal AI assistants
Building what’s next with AI.
AI coworkers for running projects and operations
S24 · Vertical AI agents
AI helpers for patient intake and benefits checks
AI-powered workflow automation for US healthcare providers.
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
W26 · Data for AI
We use AI to collect and analyze real estate data
The brokerage that never sleeps
S21 · Fintech
A safe and friendly way to play crypto games.
The global operating account you truly deserve.
W24 · Agent infrastructure
The Modern ETL and Data Science Platform for Finance
Helps teams work effectively with AI coding agents.
W25 · Consumer
Personalized Updates on Company Progress
The digital home for your personal memories
W24 · Vertical AI agents
AI coworkers to automate browser work, in minutes.
AI agents for insurance claims
F24 · Agent infrastructure
CTGT safeguards against reputational risk from GenAI across your org
The deterministic layer for frontier intelligence
W23 · Vertical AI agents
ARR Reporting and Forecasting for SaaS companies
AI agents for healthcare and insurance operations in GCC
S25 · Vertical AI agents
AI regulatory drafting and compliance
Secure frontier AI for government & adjacent knowledge work
S24 · Vertical AI agents
The modern operating system for chemical manufacturing.
Helping industrial manufacturers win deals fast, at the right price.
W23 · Horizontal AI assistants
AI Employees for Finance
Discover new opportunities (jobs, deals, investors)
S24 · Developer tools
Optimizing ecommerce pricing with dynamic, personalized discounts
Providing quick product and design feedback via digital twins
Acquired
Status moved to acquired since February (71 companies).
- Remedy · Vertical AI agentsF25
- Metis · Agent infrastructureS25
- Nexa Labs · Robotics and physical worldS25
- Opennote · Horizontal AI assistantsS25
- Galen AI · Vertical AI agentsX25
- TensorPool · AI infra and computeW25
- ZeroEntropy · AI infra and computeW25
- Central · Vertical AI agentsS24
- Midship · Vertical AI agentsS24
- Browser Buddy · ConsumerW24
- Lumetric · Vertical AI agentsW24
- Onyx · Horizontal AI assistantsW24
- Sample · Healthcare and bioW24
- Soundry AI · ConsumerW24
- Speck · Horizontal AI assistantsW24
- Tusk · Developer toolsW24
- CheqUPI · FintechS23
- Continue · Developer toolsS23
- Dioxus Labs · Developer toolsS23
- Fragment · B2B SaaSS23
- Glide · FintechS23
- Mocha · Developer toolsS23
- Cobblestone · B2B SaaSW23
- Fintool · Horizontal AI assistantsW23
- Helicone · Developer toolsW23
Went inactive
Active in February, marked inactive today (63 companies).
- Kyten Technologies · Robotics and physical worldW26
- Mendral · Vertical AI agentsW26
- Dome · Commerce and marketplacesF25
- Rovr · Developer toolsF25
- 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
- Atla · Agent infrastructureS23
- Leafpress · Climate and energyS23
- Synch · B2B SaaSS23
- Fetchr · ConsumerW23
- Gluetrail · Developer toolsW23
- Homeflow · B2B SaaSW23
- Peeba · Commerce and marketplacesW23
- rift · B2B SaaSW23
- Turntable · Developer toolsW23
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 · Data for AI · 2026-09-03
unknown · B2B SaaS · 2026-09-03
unknown · Data for AI · 2026-09-02
unknown · Consumer · 2026-08-27
unknown · Robotics and physical world · 2026-08-27
unknown · Climate and energy · 2026-08-24
growth · Robotics and physical world · 2026-08-21
unknown · B2B SaaS · 2026-08-19
series-a · Other · 2026-04-01
seed · Healthcare and bio · 2026-04-01
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% | 5,204 | 6,174 | 78.9% |
| Plug and Play | 77.9% | 4,232 | 5,430 | - |
| Techstars | 83.1% | 3,685 | 4,433 | 81.3% |
| 500 Global | 81.3% | 1,789 | 2,200 | 80.4% |
| antler | 90.5% | 962 | 1,063 | 87.8% |
| SOSV | 79.3% | 624 | 787 | 78.9% |
| ef | 90.1% | 453 | 503 | 87.8% |
| skydeck | 78.0% | 266 | 341 | 72.8% |
| seedcamp | 93.3% | 305 | 327 | 92.4% |
| a16z speedrun | 94.4% | 219 | 232 | - |
| spc | 96.5% | 194 | 201 | 96.4% |
| pear | 96.5% | 193 | 200 | - |
| aigrant | 89.1% | 82 | 92 | - |
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