We’re inviting India’s developer community to showcase what they’ve built with Sonnet 4.5 at the Accel + Anthropic Dev Day, a one-day, invite-only developer summit bringing together India’s finest CTOs, product leaders, and technical founders.

The top 3 submissions will receive up to $2,500 in Claude credits, and the opportunity to demo their builds live at the event.

The top 50 submissions will receive an invite to attend the event in person - with access to Anthropic’s roadmap keynote and sessions with India’s leading CTOs.

What to Build

  • Create something new using Sonnet 4.5, via Claude Code or the Claude API
  • Your project should be relevant, useful, and impactful - whether for startups, enterprises, or the wider developer ecosystem.
  • Think bold: tools that scale businesses, experiments that reimagine workflows, or apps that open entirely new categories.

Our focus theme: Enterprise Agents & Vertical Copilots — in fintech, health, logistics, education, compliance, customer support, HR, and beyond.

Requirements

What to Submit:

Participants must:

  1. Build a working demo using Sonnet 4.5, via Claude Code or the Claude API

  2. Submit:

    • A 3-minute demo video showing the app in action.

    • A short description (max 300 words) explaining what you built, who it’s for, and how you’ve used Claude.

    • A GitHub repo or app link to allow judges to review functionality.

  3. Projects must be new builds or substantial new features (no resubmissions of old work).

Hackathon Sponsors

Prizes

4 non-cash prizes
First Place
1 winner

$2500 in Claude Code Credits and an invitation to present your demo at the Accel + Anthropic AI Dev Day in Bangalore on Saturday, October 11th.

Second Place
1 winner

$1500 in Claude Code Credits and an invitation to present your demo at the Accel + Anthropic AI Dev Day in Bangalore on Saturday, October 11th.

Third Place
1 winner

$1000 in Claude Code Credits and an invitation to present your demo at the Accel + Anthropic AI Dev Day in Bangalore on Saturday, October 11th.

Top 5
2 winners

An invitation to present your demo at the Accel + Anthropic AI Dev Day in Bangalore on Saturday, October 11th.

Devpost Achievements

Submitting to this hackathon could earn you:

Judges

Chitranjan Jain

Chitranjan Jain
Accel

Danny Delaney
Anthropic

Chloe Ho

Chloe Ho
Anthropic

Prayank Swaroop

Prayank Swaroop
Accel

Judging Criteria

  • Relevance
    Does the project use Claude in a helpful, harmless, and honest way? Is the project’s concept innovative and unique?
  • Pitch
    Does the project seem useful, good, and necessary? Is the pitch good? How effectively does the team present their project?
  • Technical Implementation
    How well has the team implemented the idea? Does the code or demo work?
  • Future Potential
    What is the project’s long-term potential for success, growth, and impact? Is this a startup or a longer-term project?

Questions? Email the hackathon manager

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