Moonfire • Build Night Hackathon
Hosted by Moonfire Events + Moonfire 🌗🔥
View organizer listing
What to look forward to
Moonfire’s fast-paced Build Night hackathon will bring 30 selected builders together in teams to tackle challenges in always-on agents, autonomous research, and security, with frontier models, GPU compute, and technical support from Google, Anthropic, and ElevenLabs. Senior investors, AI lab leaders, and technical operators will judge the builds, with top teams presenting onstage and an Anthropic workshop and fireside conversation rounding out the evening.
Inside the event
Presenting a 3-hour hackathon for London’s builders, as part of Moonfire’s Build Night.
Registrations are now closed, but if you want to come along just for the ride, sign up to the wider Build Night event here.
We’re selecting 30 builders to form 10 teams of three, tackling challenges set by our partners and portfolio companies.
This is a deliberately short, fast, and selective hackathon.
The all important challenge streams, set by awesome companies including White Circle, C3, Sparkles, and AgentBay
- Always-On Agents
- Autonomous Research
- Agent Security
We're running the event with support from Google, Anthropic, and ElevenLabs. Teams will have access to frontier models, GPU compute, and API credits.
Outputs will be judged by senior investors, leaders from frontier AI labs, and experienced technical operators. The leading teams selected will take to the main stage and present what they’ve built to 300+ people from London’s builder ecosystem.
There will be prizes for the strongest builds, support from technical engineers throughout the evening (including Moonfire's very own data gang), and multiple opportunities to meet the wider Build Night crowd.
Alongside the hackathon, we’ll be hosting a live builder workshop from Anthropic, followed by a fireside conversation with technologists from Anthropic and Google.
You don’t need to be the most technical person in the room. We’re looking for people who are curious, inventive, and keen to build.
You can apply solo or as part of a team of up to three. If you apply individually, we’ll help with team matching. If you already know who you’d like to build with, each team member should apply and include the names of their teammates.
Applications close at midday on Monday 12th of October. Successful applicants will be informed shortly after the deadline.
How the evening will run:
- 4:30pm · Doors open
- 5:00pm · Hackathon begins
- 8:00pm · Building ends
- 8:30pm · Winning teams take the stage
- 9:00pm · Close
Bring your laptop. We’ll bring the challenges. 🌗🔥
One Triton Square
One Triton Square, 1 Triton Square, London NW1 3BF, UK. Confirm the venue with the organizer before traveling.
Open in Google Maps ↗Discovered through Cerebral Valley. Details come from the event listing and the organizer page; registration is managed by the organizer.
Last checked: Oct 22, 2026. Confirm current availability before making plans.
Organizer page checked: Oct 22, 2026. Check registration for the latest details.