STRANGER BUILDS Halloween Hackathon 2026
Registration closed · Similar hackathons still open
- Naïve Autonomous Company HackathonDue 11-07
- BIG BERLIN HACK (Nov 2026)Due 11-28
- Alipay Agent Emergence Award 2026 · Round 1 (Ant Group)¥1M · Due 12-06
- Anthropic Claude Impact Lab San Francisco: AI Trust & SafetyDue 11-17
- Tech4Bharat 2026: GAVS National Student HackathonDue 11-10
- 2026 Zhuhai AI OPC Startup Competition¥400k · Due 11-10
Not sure which to join? Get 1:1 help →

About this hackathon
NERDCONF's "nerdiest Halloween hackathon": on Saturday, Oct 31 you build for a day in person in San Francisco, Melbourne or Bangalore—or online from anywhere—then get seven more days online to ship and find your first real users. Main sponsors are Base44 and Fetch.ai, with Vonage APIs; challenges and judges are still to be announced. $10,000 in cash prizes and credits. Free; each edition has its own Luma page and in-person spots need host approval.
- Status
- Deadline
- 2026-10-31
- Starts
- 2026-10-31
- Who
- Open to all (Free; pick the San Francisco, Melbourne or Bangalore in-person edition or join online from anywhere; in-person spots need host approval)
- Level
- Beginner-friendly
- Prize
- $10,000 in cash prizes and credits combined (cash share not disclosed); challenges to be announced
- Size
- —
- Format
- Hybrid · San Francisco · International
- Location
- San Francisco
Browse similarHackathons in San FranciscoOnline hackathonsBeginner-friendly hackathonsAI hackathonsAI Agent hackathonsAI Coding hackathonsStartup hackathonsHackathons in October 2026
Original listing (Chinese)
The full original listing below is in Chinese, as published in the Hack123 newsletter.
一句话简介:NERDCONF 办的万圣节主题黑客松,10月31日先在旧金山、墨尔本、班加罗尔线下或全球线上开发一天,再用 7 天线上把作品做完,找到第一批真实用户。
看点:主赞助 Base44(一句话生成带后端、登录和托管的应用)和 Fetch.ai(AI Agent),另有 Vonage 消息/音视频 API;强调「做点奇怪的东西并让真人用起来」;各站分开报名,线下场需主办方审核;赛题和评委还没公布
奖金:现金奖 + 额度共 1 万美元(现金占比未公布)
截止日期:10月31日(活动当天,线下场需提前报名审核)(线上+线下,旧金山 / 墨尔本 / 班加罗尔)
活动日期:10月31日 10:00—18:00(太平洋时间)线下或线上开发日,之后 7 天线上冲刺(线上+线下)
Summarized from the organizer’s page and public posts. Please confirm details on the official site before registering.