Hacktoberfest Hack Day Linz

A one-day mini-hackathon on open-source AI at JKU Linz on 30 October 2026: free, in person, and open to seasoned developers and first-time hackers alike. Teams build a working prototype with open-source tools and open-weight models in dedicated build time, with mentors on site all day. Linz was the only location in Austria to host a Major League Hacking (MLH) Hacktoberfest event this season.

Best Open-Source AI Project, with DigitalOcean: the main track. Open-source or open-weight AI must be a core part of the build: an agent skill, an open-weight large or small language model, or an open-source model harness. Prize: an exclusive Hacktoberfest 2026 winner DEV badge and an MLH swag bag.

Best Use of Gemma 4, with Google DeepMind: multimodal assistants, focused AI tools and rapid prototypes built on the open-weights Gemma 4 model through the Gemini API.

Best Use of ElevenLabs: projects that integrate or build on the ElevenLabs platform. Every participant registered before 27 October, 1 pm, received a free 1-month Pro subscription; the winning team took home long-term Pro access.

Best Use of Lovable: projects that integrate or build on the Lovable platform. Every participating team received a free 1-month Pro subscription; the winning team took home long-term Pro access.

Mentorship from founders, engineers and AI researchers. Exclusive MLH shirts and badges. Partner tool access for every team. Dinner and networking to close the day.

Mentors on site all day: Krish Munot, Vladyslav Kravchenko, Dino Osmanagić, Olha Rybak, Muhammad Ahmad Anwar and Abdalaziz Ayoub.