Y Combinator×Symphony

Buildathon

Path to YCWinner gets a YC interview

Build from anywhereOct 15 – Nov 20, 2026Finale at Symphony, Lalit Ashok, Bengaluru
Apply Now

Bring any idea.
Give it a voice.

Build whatever you like, as long as voice is part of it. A new product, or a voice feature on something you've already built. The Buildathon is fully virtual. Only the top 3 teams come to Bengaluru to pitch on the Abhyas stage at Symphony on 20th Nov, and we cover their travel.

Y Combinator×Bolna

Path to Y Combinator

The winning team gets an interview with YC.

Build something real with voice AI over five weeks. Pitch it on stage at Symphony. If you win, you take it straight to a YC interview.

  1. 01

    Oct 15 – 31

    Build and submit your project

  2. 02

    Nov 20

    Grand Finale pitch at Abhyas Hall

  3. 03

    The winner

    Interviews with Grey Baker, YC Partner

Our sponsors

PlivoExotelSarvamCartesiaDeepgramKalpa Labs

Prizes

₹1.2 lakh in cash for the top three teams. The winner gets a shot at Y Combinator.

01
Grand prize

1st Place

₹50,000 + a YC interview

Interview with Grey Baker, YC Partner. Travel covered, and more.

02

2nd Place

₹40,000

Cash, goodies and travel covered. Pitch on the Abhyas stage.

03

3rd Place

₹30,000

Cash, goodies and travel covered. Pitch on the Abhyas stage.

How it works

  1. 01
    Oct 15 – 31

    Apply & Build

    Register and start building your idea.

  2. 02
    Oct 31

    Submit

    Deadline to submit your project.

  3. 03
    Nov 3

    Shortlist

    Selected teams get an interview invite by email.

  4. 04
    Nov 5 – 7

    Interview

    Interviews with selected teams.

  5. 05
    Nov 8

    Results

    Finalists announced. Top 10 win free Symphony tickets.

  6. 06
    Nov 20

    Grand Finale

    Top 3 pitch to the crowd at Abhyas Hall.

Final presentations at Abhyas hall, Symphony.

Everything before the finale happens online. Only the top 3 teams travel to Abhyas Hall on 20th Nov to present, and we cover their travel.

20th Nov, 2026

During Symphony

Abhyas Hall, The Lalit Ashok, Bengaluru

Grand Finale pitch

Any idea, powered by voice

Build anything with Voice AI

Path to YC

Winner interviews @ YC

Build anything.
Just make it talk.

No tracks. Bring any idea, as long as it has a voice component.

Some examples

01

A voice tutor for kids

02

A phone helpdesk for a local clinic

03

A voice layer on an app you already built

04

A hands-free tool for drivers or field workers

FAQs

Students, professionals and indie builders — anyone who wants to build with voice.

Your team

About you

Your idea

Have you decided on your idea?*