Build with Voice x Hackathon

Date: 06 – 07 September 2025

Location: Techspace Aldgate East, London

Build with voice. Move fast. Push what’s possible.

Join in London for a weekend at the frontier of human–AI interaction. In just 48 hours, go from blank page to working prototype — powered by ElevenLabs, Synthflow, and Anam.ai.

Hosted by Antler, the global VC backing founders from day zero, this hackathon is for those ready to experiment, collaborate, and create the future of voice.

Who We’re Looking For

We’re curating a highly selective group of exceptional builders:

Engineers, product thinkers, designers, and creatives — all builders welcome
Aspiring founders exploring voice, audio, and applied AI
High-agency operators ready to collaborate and move fast

No team? No idea yet? No problem. Teams will form on Day 1.

Apply by midnight Thursday 4 September. Places are limited.

What You’ll Get

ElevenLabs: Access to powerful voice APIs, credits, and tools
Synthflow: Access to the platform for building human-like phone agents with memory, context, and real-time responses in 30+ languages
Anam.ai: One-shot persona synthesis to bring characters and voices to life
Mentorship from the ElevenLabs, Synthflow, Anam, and Antler teams, plus more partners to be announced
Workspace, fuel, and pizza + drinks each evening
A chance to demo to top operators, investors, and product minds in AI

Logistics

Dates:
- Saturday 6 September, 11 AM – 9 PM
- Sunday 7 September, 9 AM – 5 PM
Location: Central London (shared after registration)
Format: In-person only
Food & drinks: Provided