Free hackathons (2026)
Every hackathon on this page is free to enter: there is no registration fee to take part. You still get the full experience: problem statements, a team workspace, mentors where offered, prizes and a certificate when you submit.
A few hackathons charge a small fee for a later round (for example, to confirm a shortlisted spot). That is always stated on the hackathon page before you register.
Open and upcoming
ML Challenge Hack4Hack 2026
A two-round machine-learning challenge. A 24-hour Round 1 starts when the problem statement and dataset go live on 22 Oct; the top 100 get a new problem and dataset for 3 days.
Datathon by Hack4Hack · Online · ₹1L in prizes · Free · Registration closes 20 Oct 2026
AgentX Hackathon 2026
Build AI agents that get real work done. 24 hours, online. Free to register.
Hackathon by Hack4Hack · Online · ₹3.75L in prizes · Free · Registration closes 30 Oct 2026
Frequently asked questions
Do I have to pay to register on Hack4Hack?
No. A Hack4Hack account is free, and most hackathons are free to enter. When an organizer charges a fee, it is shown on the hackathon page before you register.
Will I get a certificate?
Every team that submits a project gets a participation certificate when the hackathon ends, and winners get a certificate of achievement. Some organizers add their own certificates too.
Why do some hackathons charge a fee?
Fees usually cover venue, food or prizes for in-person events, or confirm serious teams in a final round. The amount and what it covers are shown on the hackathon page.