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Lighthaven Campus
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Lighthaven is the primary physical gathering space for the AI safety and rationalist community in the Bay Area, making it relevant as infrastructure supporting the broader AI safety research and coordination ecosystem.
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Summary
Lighthaven is a physical campus in Berkeley, CA, operated by Lightcone Infrastructure, dedicated to hosting events, conferences, retreats, and programs focused on AI safety, rationality, forecasting, and intellectual progress. It serves as a hub for the rationalist and EA-adjacent communities, hosting events like LessOnline, Manifest, MATS AI safety fellowship, and SPARC.
Key Points
- •Physical venue in Berkeley offering retreat/workshop space (15-70 people), conference facilities (up to 500), and ~40 bedrooms for accommodation.
- •Hosts major rationalist/EA community events including LessOnline festival, Manifest prediction markets conference, and MATS AI safety fellowship.
- •Run by Lightcone Infrastructure, whose mission is facilitating intellectual progress on humanity's most important questions including AI safety.
- •Has hosted AI safety researchers, forecasters, progress studies scholars, and rationalist writers since 2023.
- •Supports multi-week residency programs like MATS AI safety fellowship and Vitalist Bay longevity science program.
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| Page | Type | Quality |
|---|---|---|
| Lighthaven (Event Venue) | Organization | 40.0 |
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# Lighthaven
_A campus in Berkeley, CA, run by Lightcone Infrastructure_
Chat with us [Submit an inquiry](https://airtable.com/appIDSB5FN81es9PE/shrkHA9uGBXTexxRN)
### Retreats & Workshops
#### 15 - 70 people
We offer cozy nooks, discussion rooms with endless whiteboards, and ~40 bedrooms (with up to ~80 beds).
### Conferences
#### 50 - 500 people
Conference space for up to 140 people inside, 500 people outside. 20+ session spaces. 80 conference attendees can book accommodation on the campus.
### Event Space
#### 10 - 500 people
We can host events ranging from 20 person talks to large 500 person mixers. We can provide sound setup, music, private kitchens, snacks, catering.
## What is Lighthaven?
Lighthaven is a space dedicated to hosting events and programs that help people think better and improve humanity's long-term trajectory.
Since 2023, we've hosted some of the most important gatherings at the intersection of AI, science, and intellectual culture — from David Chalmers exploring AI consciousness at [Eleos ConCon](https://eleosai.org/conference/), to talented high schoolers learning applied rationality at [SPARC](https://www.sparc.camp/), to progress studies pioneers at the [Progress Conference](https://rootsofprogress.org/conference/).
Our annual festival [LessOnline](https://less.online/) and the prediction markets conference [Manifest](https://manifest.is/) together bring 600+ writers, forecasters, and builders each summer. We've hosted multi-week programs like the [MATS](https://www.matsprogram.org/) AI safety fellowship and [Vitalist Bay](https://www.vitalistbay.com/)'s 8 weeks of longevity science, as well as intimate residencies like [Inkhaven](https://www.inkhaven.blog/) where 40 writers spent a month publishing daily.
Lighthaven is a project by [Lightcone Infrastructure](http://www.lightconeinfrastructure.com/), which is dedicated to facilitating intellectual progress on humanity's most important questions.
## Some Events We've Hosted
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**LessOnline** \\
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Our own festival. 400+ people who write on the internet getting together to argue, give talks, and meet each other in person.\\
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Scott Alexander · Zvi Mowshowitz · Patrick McKenzie · ...](https://less.online/) [\\
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**Ma
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