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YC Winter 2024 (W24)

248 companies Y Combinator lists for Winter 2024, with what each one builds. 79.7% of the tagged companies are AI, up from 74.3% in S23.

Companies
248
AI share
79.7%
Top sector
Engineering, Product and Design
41 companies
Second
Infrastructure
13 companies

What’s in Winter 2024

Winter 2024 lists 248 companies so far (S23 had 220). The biggest themes by YC's tags are Developer Tools (30), AI Assistant (19), Fintech (16), Healthcare (13) and Automation (12). The largest sectors are Engineering, Product and Design, Infrastructure, Healthcare IT and Analytics. 11.5% are based outside the US.

  • Developer Tools · 30
  • AI Assistant · 19
  • Fintech · 16
  • Healthcare · 13
  • Automation · 12

See what YC asked founders to build · Breakout themes across batches

All Winter 2024 companies

248 companies

  • Abel

    Transforming document review for litigation teams

    AI
    Legal2San Francisco, CA, USAInactive
  • Adapted

    AI physical therapy for athletes

    AI
    Consumer2San Francisco, CA, USA
  • Aedilic

    Open-Source AI-generated image/deepfake detection

    AI
    Security2San Francisco, CA, USAInactive
  • Aftercare

    Conversational AI surveys with intelligent follow-up questions

    B2B3New York City, NY, USA
  • Agentic Labs

    AI system design tools for dev teams

    AI
    Engineering, Product and Design2New York City, NY, USA
  • Aidy

    Mobile app helping people better manage chronic health conditions

    Consumer Health and Wellness2San Francisco, CA, USA
  • Alai

    Create high quality presentations quickly using AI

    AI
    B2B5San Francisco, CA, USA
  • Alex

    Alex is the AI recruiter for hiring great people.

    AI
    Recruiting and Talent30San Francisco, CA, USA
  • Andon Labs

    Autonomous organizations without humans in the loop

    AI
    Engineering, Product and Design11San Francisco, CA, USA
  • Andy AI

    Faster clinical documentation for home health nurses

    AI
    Healthcare IT5San Francisco, CA, USA
  • Aqua Voice

    Frontier Voice Input - write 4x faster than typing.

    AI
    Consumer5New York City, NY, USA
  • AI
    Consumer2New York City, NY, USAAcquired
  • Aren

    Powering Successful Nursing Shifts

    AI
    Healthcare
  • Argon AI, Inc.

    AI for Pharma Intelligence

    Healthcare2New York City, NY, USA
  • Arini

    The single platform to run all healthcare operations

    AI
    Healthcare IT17San Francisco, CA, USA
  • Artisan

    AI employees that take on real work, starting with sales

    AI
    B2B50San Francisco, CA, USA
  • Artos

    Authoring documents for life sciences in minutes, not months.

    B2B7San Francisco, CA, USA
  • Astro Mechanica

    Supersonics for the new Jet Age

    Aviation and Space52San Francisco, CA, USA
  • atopile

    We make tools to design electronics circuit boards with code

    Engineering, Product and Design5San Francisco, CA, USA
  • Attunement

    Attunement turns fragmented behavioral health records into structured…

    AI
    Healthcare3San Francisco, CA, USA
  • AveryIQ

    AI Copilot for Property Managers and Landlords

    AI
    Housing and Real Estate3Austin, TX, USA
  • Basalt

    Constellations as a Service

    AI
    Aviation and Space10San Francisco, CA, USA
  • Basepilot

    AI agents for insurance claims

    AI
    Productivity2San Francisco, CA, USA
  • BetterBasket

    Smart grocery pricing with AI

    AI
    Analytics5San Francisco, CA, USA

Source: Y Combinator’s public company directory. Each company links to its YC profile. See how we count and what YC asked founders to build.

Frequently asked questions

How many companies are in YC Winter 2024?

Y Combinator's public directory lists 248 companies for Winter 2024 (W24), compared with 220 in Summer 2023. YC adds companies as they launch, so a recent batch can still grow.

What kind of startups are in YC Winter 2024?

The most common themes by YC's own tags are Developer Tools (30), AI Assistant (19), Fintech (16), Healthcare (13) and Automation (12). The largest sectors are Engineering, Product and Design, Infrastructure, Healthcare IT and Analytics. 79.7% of the companies YC has tagged are AI.

Where are YC Winter 2024 companies based?

11.5% of Winter 2024 companies with a listed location are based outside the US.