June 2026 Hackathon Tier List
the builder window is wide open this month
ranked by prize, influence, and who's backing it
S TIER
> Build with Gemini XPRIZE - $2,000,000 (build live, Aug 17)
xprize.devpost.com
>
@SuiNetwork Overflow 2026 - $500,000 (June 30)
overflow.sui.io
> ETHGlobal New York - $225,000 (June 12–14, NYC)
ethglobal.com/events/newyork…
A TIER
>
@arbitrum Open House London - $115K / $415K total (June 14)
arbitrum-london.hackquest.io
>
@Mantle_Official Turing Test - $100,000 (June 15)
dorahacks.io/hackathon/mantl…
> HackerNoon Proof of Usefulness - $150,000 (June 5)
hackernoon.com/buildathon
> Casper Agentic Buildathon - $150,000 (June 30)
dorahacks.io/hackathon/caspe…
> Google Cloud Rapid Agent - $60,000 (June 11)
rapid-agent.devpost.com
> Poker Arena (
@devfun x Monad) - $50,000
x.com/devfun
B TIER
> UiPath AgentHack - $48,000 (June 29)
uipath-agenthack.devpost.com
> FIND EVIL! (SANS) - $22,000 (June 15)
findevil.devpost.com
>
@qvac Edge AI by Tether - $21,000 USDT (June 1–21)
dorahacks.io/hackathon/qvac-…
> Splunk Agentic Ops - $20,000 (June 15)
splunk.devpost.com
C TIER
> LaunchHacks V - $17,575 (June 20–22)
launchhacks-v.devpost.com
> UXmaxx - $15,000 (crypto UX)
encodeclub.com/programmes/ux…
> USAII Global AI - $15,000 (students, June 14–21)
usaii-global-ai-hackathon-20…
> Microsoft Agent Academy - $12,000 (June 2)
microsoft.github.io/agent-ac…
> Band of Agents - $10,000 (June 12–19)
lablab.ai/ai-hackathons/band…
> World Product Day - $10,000 (June 20)
mindtheproduct.devpost.com
D TIER
> Vara Agents Arena - $8,000 (June 6)
agents.vara.network/hackatho…
> Somnia Agentathon - $5,000 (June 10)
encodeclub.com/programmes/ag…
> Tatum x Sui Walrus - $2,000 (June 6)
tatum.io/tatum-x-walrus-hack…
who's ready to win ?