Hacktoberfest Hack Day São Paulo x FLUSP
About
[pt-BR]
E se, neste Halloween, em vez de caçar fantasmas, você caçasse bugs? No dia 31 de outubro, o FLUSP — FLOSS at USP recebe a Hacktoberfest 2026 para um dia de experimentação, aprendizado e construção coletiva no CCSL, no IME-USP.
A edição deste ano da Hacktoberfest tem um novo foco: Open-Source AI. Em vez de simplesmente contar pull requests, a proposta é colocar a mão no código, explorar modelos open-weight, ferramentas de IA open source e agentes, aprender junto e construir coisas de verdade.
E não poderia haver lugar melhor para isso. O FLUSP é uma comunidade de estudantes da USP dedicada a contribuir com projetos de software livre, com uma cultura baseada em compartilhamento de conhecimento, revisão de código, mentoria e colaboração. O grupo mantém encontros semanais no CCSL, um espaço do IME dedicado justamente à promoção do software livre.
Durante o Hack Day, vamos transformar essa filosofia em prática: formar equipes, experimentar ideias, construir projetos e aprender com outras pessoas. Você não precisa ser especialista em IA nem chegar com um projeto pronto — basta trazer curiosidade, vontade de construir e, de preferência, seu laptop.
E sim: é Halloween. Então venha preparado para encontrar alguns bugs assustadores, modelos que fazem coisas inexplicáveis e, quem sabe, um ou outro merge sobrenatural.
Código aberto, ideias abertas e um sábado inteiro para construir. Nos vemos no Hack Day!
[en]
What better way to spend Halloween than hunting bugs instead of ghosts? On October 31st, FLUSP — FLOSS at USP is hosting Hacktoberfest 2026 for a full day of experimentation, learning, and collaborative building at the CCSL, at IME-USP.
This year’s Hacktoberfest comes with a new focus: Open-Source AI. Instead of simply counting pull requests, the goal is to get hands-on with open-weight models, open-source AI tools, and agents — learning together, experimenting, and actually building things.
There couldn’t be a better place for it. FLUSP is a community of USP students dedicated to contributing to free and open-source software, with a culture built around knowledge sharing, code review, mentoring, and collaboration. The group holds weekly meetings at the CCSL, a space at IME dedicated to fostering free and open-source software.
During the Hack Day, we’ll put that philosophy into practice: form teams, explore ideas, build projects, and learn from one another. You don’t need to be an AI expert or arrive with a fully formed project — bring your curiosity, your willingness to build, and, preferably, your laptop.
And yes: it’s Halloween. So be ready for terrifying bugs, mysterious model behavior, and maybe even a supernatural merge.
Open code, open ideas, and a whole Saturday to build. See you at Hack Day!
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
