Colosseum (Solana)
Colosseum's fall hackathon closed Oct 12 and Eternal is paused. Winners can still land $250k pre-seed.
Colosseum runs crypto's biggest online hackathons and turns the best teams into funded startups: accepted winners join its accelerator with $250,000 in pre-seed funding. Right now there is nothing open to enter.
As of October 2026: Colosseum's fall hackathon, the Crypto World's Fair, ran September 14 to October 12, 2026, and judging is underway. Colosseum says winners land roughly one month after the deadline, so expect results around mid-November. Colosseum Eternal, its four-week rolling sprint, is paused to new sprints. No 2027 hackathon dates are announced, so I have marked this page ended until the next round is.
What did the Crypto World's Fair pay?
$840,000 in prizes plus $2.5 million in seed funding, with 11,650 builders signed up. A $30,000 Grand Prize, $15,000 each for the next 20 projects, a $5,000 Public Good Prize and a $5,000 University Prize, plus ecosystem tracks for Solana, Ethereum, Hyperliquid, Base, Tempo, Arbitrum, Zcash and Robinhood Chain. The Solana track alone paid $10,000 each to 10 projects. This edition went cross-ecosystem, not Solana-only.
Why Colosseum matters
Every winner is considered for the accelerator: $250,000 in pre-seed funding, mentorship and a 12-week program at Colosseum's San Francisco office. That is the shortest path I know from a weekend build to a funded company.
My take: "Colosseum is a fundraise disguised as a hackathon." The prize money is nice. The accelerator seat is the real prize.
The honest catch
Thousands of teams enter and most win nothing. Colosseum ran two big hackathons in 2026 (spring and fall), but the fall dates moved from what it first published in January, so wait for the official announcement before you plan around a window.
What to do now
Start the project now, so you enter the next round with users instead of an idea. Builder money open today: the Base Builder Grant , Circle's grants on Arc and GOAT's agent grants . Need it built? Deployr .
How you earn
Colosseum is between rounds, so you cannot enter today. This is how it works when a round opens.
When Eternal reopens, you can also run a four-week sprint at any time: weekly one-minute progress videos, a final submission, and a shot at the $25,000 Eternal Award.
The official page is where the next round will be announced.
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