Hacktoberfest Hack Day Budapest
Come along to Puzl CowOrKing this Halloween to build open-source software, explore AI and hardware, and connect with the local Hungarian dev community.
Prize category
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.