# AI Engineer World's Fair Hackathon 2026

- **When:** Jun 27 at 9:00 AM – Jun 28 at 5:00 PM (PDT)
- **Where:** San Francisco, CA
- **Hosts:** [Cerebral Valley](https://cerebralvalley.ai/u/events)
- **Format:** Hackathon
- **Registration:** Closed (the event has ended) — https://cerebralvalley.ai/e/aiewf-hackathon-2026
- **Page:** https://cerebralvalley.ai/e/aiewf-hackathon-2026

Welcome to the **second** official [AI Engineer World’s Fair](https://www.ai.engineer/worldsfair/2026) Hackathon, hosted with [Cerebral Valley](https://cv.inc/about).

The world is progressing towards **recursive self-improvement (RSI)**, but **what happens when AI is capable of building itself? **

This hackathon is dedicated to exploring that future. Come build at the **edge of RSI**: systems that learn from their own outputs and AI that becomes more capable through continuous iteration.

Winners will receive **$35,000+** across cash prizes and partner credits.

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Markdown version of https://cerebralvalley.ai/e/aiewf-hackathon-2026. Site index for agents: https://cerebralvalley.ai/llms.txt · full text: https://cerebralvalley.ai/llms-full.txt