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Hackathons

Hackathons are short build events, online or in person, with prizes from organisers and sponsors. In-person places are often allocated by a short application, and judging rewards a working demo with a clear explanation.

38 open listings, each checked against its official page.

  1. Closing soon: 2 November 2026Codex x TwitchCon HackathonTwitchOnline hackathon: use OpenAI Codex to build tools, games or overlays for Twitch streamers and their chat (Twitch API, EventSub). Adults 18+; $25,000 in prizes, and the…$25,000 in prizesRemote · open worldwideDetails and how to apply
  2. Closing soon: 2 November 2026HSK Chain Horizon Hackathon · IndiaHSK ChainAI x DeFi hackathon on HSK Chain (Mumbai edition): build an AI-agent trading system on a DEX, or agent-to-agent payments with HSP. Open worldwide; submit on DoraHacks by…10,000 USDT total (5,000 USDT per track; 1st place 2,500 USDT)Mumbai, India · open to applicants worldwideDetails and how to apply
  3. Closing soon: 2 November 2026YouCam API Skin AI & eCommerce VTO HackathonPerfect CorpOnline hackathon to build a web or mobile prototype on Perfect Corp's YouCam APIs (AI skin analysis, apparel virtual try-on) for beauty, fashion or e-commerce. 1,000…$6,000 in prizesRemote · open worldwideDetails and how to apply
  4. Closing soon: 8 November 2026Sheridan Datathon 2026GDG on Campus Sheridan College24-hour in-person datathon (an MLH member event) at Sheridan College, Mississauga, on 7–8 Nov: turn real datasets into models, analyses or dashboards, judged on insight…CA$12,000 in prizesMississauga, CanadaDetails and how to apply
  5. Closing soon: 9 November 2026Learn AR with SPECSDevpostOnline learning hackathon run by Devpost: design an augmented-reality Lens for Snap's SPECS glasses and let an AI coding agent build it in Lens Studio, no glasses…$2,500 in prizesRemote · open worldwideDetails and how to apply
  6. Closing soon: 11 November 2026Mozilla Otari Hackathon - Devs Wilding Online!MozillaTwo-week online hackathon from MozFest: finish a side project using Mozilla AI's open-source Otari gateway (open-weight models, agents, tools). Submit a repo, demo video…$1,200 in prizesRemote · open worldwideDetails and how to apply
  7. Closing soon: 12 November 2026PayPal AI Hackathon (Build What's Next with PayPal and AI)PayPalOnline hackathon open worldwide in which developers, designers, founders and students build AI-powered payment and commerce tools using PayPal's platform for cash prizes.$67,500 in prizesRemote · open worldwideDetails and how to apply
  8. Closing soon: 13 November 2026BCH BLAZE 2026BCH BLAZEOnline Bitcoin Cash hackathon (second edition) on DoraHacks: build a working app that sends BCH mainnet transactions, or enter the media track. Developers worldwide…$8,000 in prizesRemote · open worldwideDetails and how to apply
  9. Closing soon: 13 November 2026Veritas AI International High School HackathonVeritas AIFree 48-hour online AI hackathon for high school students anywhere in the world, solo or in teams of up to 3. Free prep workshops; finalists pitch live to AI…$75,000 in prizesRemote · open worldwideDetails and how to apply
  10. Closing soon: 14 November 2026AMD AI LeagueAMDOnline league run by lablab.ai with AMD: earn points through AMD AI Academy courses and six build Matches (RAG, web agents, code repair, game agents) on AMD GPUs…$10,000 in prizesRemote · open worldwideDetails and how to apply
  11. Closing soon: 14 November 2026System Public ChallengeSystem, Inc.Free in-person hackathon at System's New York headquarters (13–14 Nov): teams of 2–7 explore, visualise or build tools on the System Public Graph, an open map of…$7,500 in prizesNew York, United StatesDetails and how to apply
  12. Closing soon: 15 November 2026IceHacks 2026CodeStartersFree week-long online hackathon for high school students worldwide (8–15 Nov), run by the student nonprofit CodeStarters: build any working project, from websites and AI…No cash prizes: sponsor credits, subscriptions and scholarships (Devpost lists $17,150 in prize value)Remote · open worldwideDetails and how to apply
  13. Closing soon: 15 November 2026UGREEN Hackathon 2026 on AI NASUGREENOnline hackathon to build an AI 'Skill' for UGREEN's AI NAS (UGOS). Round 1 needs only a 500-word proposal PDF and a pre-test Skill package, no NAS; up to 30 finalists…$46,000 in prizesUnited States, Canada, Mexico · remoteDetails and how to apply
  14. Apply by 18 November 2026Meta VR Start Developer Competition 2026MetaEight-week online competition for members of Meta's Start developer program to build hands-first entertainment, gaming or productivity apps for Meta VR glasses and Quest…$1,000,000 in prizesRemote · open worldwideDetails and how to apply
  15. Apply by 20 November 2026Dakar Bitcoin Hack by BTrustDakar Bitcoin DaysMonth-long online, non-profit hackathon by Dakar Bitcoin Days with Btrust: build open-source tools on Bitcoin, Lightning, Nostr or AI that meet everyday needs of people…$900 in prizesRemote · open worldwideDetails and how to apply
  16. Apply by 25 November 2026HackWithAditya 2026Aditya University (with Oracle Academy and OpenAI Student Collective)National-level, prototype-first student hackathon in India: teams bring an existing working prototype and develop it further in a 48-hour residential round hosted by…₹5,00,000 in prizesIndia · remoteDetails and how to apply
  17. Apply by 25 November 2026K! Hacks 4.0CEG Tech Forum, Anna UniversityNational hackathon by CEG Tech Forum, Anna University: a free online idea round in six domains (incl. Agentic AI, FinTech, Health Tech), then a 24-hour offline final for…₹2,00,000 in prizesChennai, IndiaDetails and how to apply
  18. Apply by 27 November 2026Pixels To PrognosisIIT Madras (Shaastra 2027)Shaastra 2027 (IIT Madras) medical-AI challenge: an online quiz, then train a glioma MRI segmentation model on a provided BraTS-derived dataset; finalists adapt it to…₹35,000 in prizesChennai, IndiaDetails and how to apply
  19. Apply by 30 November 2026#BuildHybridAI 2026GoogleGoogle's three-week online hackathon to build AI apps that run both on-device and in the cloud with Firebase AI Logic hybrid inference. Registration is open now; full…$10,000 in prizesRemote · open worldwideDetails and how to apply
  20. Apply by 4 December 2026Kiroween 2026Kiro (AWS)Kiro's annual Halloween-themed online hackathon (October 30 - December 4, 2026) where developers use the Kiro agentic IDE to build creative projects across themed…$100,000 in prizesRemote · open worldwideDetails and how to apply
  21. Apply by 10 December 2026HackOdisha 6.0Webwiz, NIT Rourkela36-hour hackathon run by Webwiz, the official tech club of NIT Rourkela, listed as online on Devfolio for 11–13 Dec 2026. Open to beginners and experts from anywhere…$1,620 in prizesRemote · open worldwideDetails and how to apply
  22. Apply by 20 December 2026Arbiter Hacks V1ArbiterOnline student hackathon with an open general track and a 'Rethinking Waste' theme track for tools that help reduce, sort or recycle waste.$7,800 in prizesRemote · open worldwideDetails and how to apply
  23. Apply by 21 December 2026Cosmo Hacks 2026Cosmo HacksFree four-day online hackathon (December 18-21, 2026) for middle-school, high-school and college students to build projects that improve student or community life.About $197K in listed prizes (mostly sponsor in-kind)Remote · open worldwideDetails and how to apply
  24. Apply by 22 December 2026Codegeist 2026: Build with context. Ship with confidence.AtlassianAtlassian's annual online hackathon: build an app on the Forge platform that uses Atlassian context (Jira, Confluence, Rovo, Teamwork Graph) for software, business or…$120,000 in prizesRemote · open worldwideDetails and how to apply

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