Hacktoberfest Hack Day Bengaluru <> KrowdKraft
Hacktoberfest Hack Day Bengaluru × KrowdKraft
KrowdKraft Community is hosting Hacktoberfest Hack Day Bengaluru 2026, a free, in-person Hack Day bringing together developers, students, professionals, open-source contributors and builders for a full day of learning, collaboration and building.
The Hack Day is part of Hacktoberfest 2026 and will focus on open-source AI and hands-on project building.
Whether you’re an experienced developer or exploring open source for the first time, you’re welcome to participate.
Event Details
- Date: 18 October 2026
- Time: 8:30 AM to 6:30 PM IST
- Venue: Startup Park, Bengaluru
- Format: Free, in-person Hack Day
- Eligibility: Open to everyone
- Team Size: 1 to 3 members
- Registration Deadline: 7 October 2026
- Shortlist Announcement: By 9 October 2026
Registration and Shortlisting
Every participant must register individually through OrganizerHQ.
Registration does not guarantee an in-person seat. Due to limited venue capacity, participants will be shortlisted for the in-person Hack Day.
Registrations close on 7 October 2026.
Shortlisted teams and participants will be announced by 9 October 2026 and will receive further information and event-day instructions separately.
All confirmed attendees must complete their OrganizerHQ check-in at the venue on the day of the event.
Theme and Challenges
The Hack Day will focus on building with open-source AI, open-source technologies and open-weight models.
Participants should refer to the official Hacktoberfest Hack Day Challenges page for the latest challenge statements, requirements and partner challenges:
Participants should follow the challenge requirements listed on the official page while planning and building their projects.
What to Bring
- Laptop and charger
- Valid government-issued or institutional ID
Participants are expected to follow the MLH Code of Conduct and venue guidelines throughout the event.
Challenges
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?
Best Open-Source AI Project
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. These are examples within one challenge, and teams may combine them.
Open-source or open-weight AI must be an important part of the project.
The project must be published in a public GitHub repository and use an open-source license.
An agent skill must comply with the Agent Skill Open Standard.
A model-harness entry must include an original implementation or meaningful changes to an existing open-source harness.
Submissions aren’t open for this event.