Helicone
Acquired
What they do:
LLM Observability for Developers
Quick facts:
HQ: San Francisco, CA, United States
Y Combinator Winter 2023 Startups
This list has 274 startups and was last updated on Oct 15, 2026. 78 of them are hiring right now. Biggest hubs: San Francisco (112), New York (50), and Bengaluru (7). Largest teams: Alaan, Tennr, and Numeral. Latest round: Clueso raised $10M (Oct 13, 2026).
274 startupsPage 7 of 8
Rally Tax
Acquired
What they do:
AI-native tax platform to save $1T+ for Americans
Quick facts:
HQ: San Francisco, CA, United States
Keep
Acquired
What they do:
The open-source AIOps platform
Quick facts:
Brewit
Acquired
What they do:
Conversational data analytics for every team
Quick facts:
HQ: San Francisco, CA, United States
Trigo
Acquired
What they do:
Rent verification API for landlords and lenders
Quick facts:
HQ: New York, NY, United States
Outerbase
Acquired
What they do:
The interface for your database
Quick facts:
HQ: Pittsburgh, PA, United States
OpenInt
Acquired
What they do:
Open Source Embedded Product Integrations
Quick facts:
HQ: Remote
Cardinal
Acquired
What they do:
Your AI product backlog
Quick facts:
HQ: Austin, TX, United States
Cobblestone
Acquired
What they do:
Delinquency reduction and automation software for institutional…
Quick facts:
HQ: New York, NY, United States
Booth AI
Acquired
What they do:
Generative AI Photographer for E-Commerce
Quick facts:
HQ: San Francisco, CA, United States
Fairway Health
Acquired
What they do:
AI Co-Pilot for Health Insurers to Authorize Treatment Faster
Quick facts:
HQ: New York, NY, United States
Vocode
Acquired
What they do:
Open source Voice AI
Quick facts:
HQ: San Francisco, CA, United States
Viddy
Acquired
What they do:
A new way to create landing pages that is video-native.
Quick facts:
HQ: New York, NY, United States
Dashdive
Acquired
What they do:
Break down AI and cloud costs by feature and customer
Quick facts:
HQ: San Francisco, CA, United States
Pledge Health
Acquired
What they do:
AI RCM assistant that handles any insurance task on payer portals for…
Quick facts:
HQ: New York, NY, United States
Arroyo
Acquired
What they do:
Cloud-native stream processing
Quick facts:
HQ: San Francisco, CA, United States
Muffin Data
Acquired
What they do:
Modern analytics for CPG brands
Quick facts:
DAGWorks Inc.
Acquired
What they do:
Open source tools & services for reliable AI Agents & AI Applications
Quick facts:
HQ: San Francisco, CA, United States
Persana AI
Acquired
What they do:
Sales Agents with 100+ data sources to close more deals
Quick facts:
HQ: San Francisco, CA, United States
Peeba
Shut down
What they do:
Risk-free wholesale for retailers across Southeast Asia
Quick facts:
GoodCourse
Shut down
What they do:
The TikTok style corporate training platform
Quick facts:
HQ: London, United Kingdom
CreatorML
Shut down
What they do:
Foundation Model for Human Attention
Quick facts:
HQ: New York, NY, United States
Luca
Shut down
What they do:
The Modern Pricing Engine for Retail
Quick facts:
HQ: San Francisco, CA, United States
Paperplane
Shut down
What they do:
Credit risk management platform for builders' merchants
Quick facts:
HQ: New York, NY, United States
Lynx
Shut down
What they do:
AI platform for investigating and resolving engineering incidents
Quick facts:
HQ: San Francisco, CA, United States
Neptyne
Shut down
What they do:
The programmable spreadsheet.
Quick facts:
HQ: New York, NY, United States
Homeflow
Shut down
What they do:
Simplifying insurance for large real estate investors
Quick facts:
HQ: San Francisco, CA, United States
Fetchr
Shut down
What they do:
The Personal Shopper in Your Pocket
Quick facts:
HQ: San Francisco, CA, United States
Upfront
Shut down
What they do:
A personal assistant for every homeowner
Quick facts:
HQ: San Francisco, CA, United States
Lavo Life Sciences
Shut down
What they do:
AI for drug formulation
Quick facts:
Struct
Shut down
What they do:
Multi-lingual AI Voice Agents
Quick facts:
HQ: Remote
Layup
Shut down
What they do:
Guide your users. Right in your product.
Quick facts:
HQ: New York, NY, United States
OpenSight
Shut down
What they do:
AI-powered customer support automation for fast-growing companies
Quick facts:
HQ: San Francisco, CA, United States
OutSail Technologies
Shut down
What they do:
Revolutionary, Modern Wing Sails
Quick facts:
HQ: San Francisco, CA, United States
Echo
Shut down
What they do:
Founder-led sales co-pilot for B2B startups.
Quick facts:
HQ: Haifa, Israel
Turntable
Shut down
What they do:
AI-native operating system for analytics teams
Quick facts:
HQ: New York, NY, United States