Hacktoberfest Hack Day Frankfurt am Main x Open Source Community
About
Hacktoberfest Hack Day in Frankfurt
Join us for a day of building with open-source AI. This Hacktoberfest 2026 Hack Day brings students and anyone curious about open source together to explore open-weight models, open-source tools, and hands-on hacking.
Whether you’re writing your first line of code or you’re an experienced developer, there’s a place for you here. No prior AI experience needed. Join as a team or on your own.
It’s less about finishing everything and more about enjoying the process. Let’s see what we can build together in a few hours!
What to expect:
- Hands-on hacking with open-source AI tools and open-weight models
- Food to keep you going
- Short project demos (2-3 min) at the end of the day
- Prizes for the Best Open-Source AI Project & Best Use of Gemma 4
- A fun, friendly community vibe
What to bring:
- Your laptop, charger, and a GitHub account. Bring your curiosity too, you don’t need to be an AI expert to take part.
Seats are limited, so register early!
Come build, learn, and celebrate open source with us. Happy hacking!
Prize Categories
2 categories- View Best Open-Source AI Project
Best Open-Source AI Project
Exclusive Hacktoberfest 2026 Winner DEV Badge & MLH Swag Bag
Build an original project that uses open-source or open-weight AI as an important part of how it works. Teams could create an agent skill, build with an open-weight large or small language model, or build or adapt an open-source model harness.
Build with DigitalOceanView category - View Best Use of Gemma 4
Best Use of Gemma 4
It’s time to see how much you can build with a lightweight, open model. Gemma 4 packs multimodal intelligence into an open-weights model that you can access through the Gemini API. So, what can Gemma 4 bring to your project?
- Multimodal Experience: Work with text and images to create an assistant that understands more of what users share.
- Focused AI Tools: Build a focused AI tool for learning, creativity, productivity, or your community.
- Rapid Prototyping: Experiment with an open model while using the Gemini API to move quickly from an idea to a working prototype.
Bring your idea to life… what will you build with Gemma 4 today?
Build with Gemma 4View category
