The hottest Meetups Substack posts right now

And their main takeaways
Category
Top Travel Topics

Spring Meetups Everywhere 2026 - Call For Organizers

Astral Codex Ten • 4886 implied HN points • 13 Mar 26
🎭️ Culture Meetups
  1. Sign up by March 26 using the organizer form if you want to run your city’s ACX meetup; the list of meetups will be posted on the blog around March 27 so people can find your event.
  2. Organizing is simple: pick a date/time/place (any day April 1–May 31; mid-April or early May is best), show up with a sign, and you don’t need to run structured activities unless you want to.
  3. Turnout varies from zero to over a hundred, so plan accordingly; small expenses like nametags, food, and drinks can be reimbursed, and you’re not committing to run meetups forever — you can recruit or hand off the role.

ACX Classifieds 1/26

Astral Codex Ten • 3785 implied HN points • 29 Jan 26
🎭️ Culture Meetups
  1. This is an irregular classifieds thread where people can advertise things in the comments.
  2. Keep replies under the right top-level category (Employment, Dating, Read My Blog, Consume My Product/Service, Meetup, Other) and don’t add new top-level comments or they’ll be deleted.
  3. Be respectful especially when responding to dating posts, and consider the linked resources like the EA job board, internships, and meetup finder for related needs.

Open Thread 413

Astral Codex Ten • 3372 implied HN points • 22 Dec 25
🎭️ Culture Meetups
  1. Lightcone Infrastructure runs a lot of the community’s technical and meetup infrastructure (like LessWrong and Lighthaven), they’ve built websites for several AI/community projects, and they’re currently fundraising so you can donate or contact them about larger gifts.
  2. A bio policy group is looking for volunteers to help vaccine expert Stanley Plotkin estimate the medical consequences if the U.S. adopted Denmark’s childhood vaccine schedule; the task would take about 4–10 hours and volunteers can apply via a form.
  3. MIRI is offering an 8‑week technical governance research fellowship in early 2026 that pays $1,200/week, begins with a one‑week intro in Berkeley (travel and lodging provided) and continues remotely, though they don’t sponsor visas.

Open Thread 416

Astral Codex Ten • 1995 implied HN points • 12 Jan 26
🎭️ Culture Meetups
  1. There’s a new subscriber-only post called “Sell Me This Pen” that collects ultrashort stories based on the classic sales interview prompt.
  2. Some ex-Triplebyte employees are trying to revive the original Triplebyte idea as Otherbranch; they’re hiring (technical sourcer) and inviting engineers and employers to connect.
  3. There’s an ACX Grants meetup in San Francisco this Saturday — grantees should check their email and contact [email protected] if they didn’t get details, and judges, funders, VCs, and other potential supporters are welcome to attend.

Possible Manchester reader meet-up?!

Odds and Ends of History • 402 implied HN points • 16 Jan 26
🎭️ Culture Meetups
  1. A reader meet-up in Manchester is being planned for the evening of 5 March, though the date is tentative.
  2. If you’d like to attend, fill in the linked form to express your interest — both paid and free subscribers are welcome.
  3. If the meet-up goes ahead, people who sign up will be contacted privately by email; previous meet-ups have been very fun and aimed at like-minded readers.
Get a weekly roundup of the best Substack posts, by hacker news affinity:

AMA on *You Have No Right to Your Culture*

Bet On It • 115 implied HN points • 27 Jan 26
🎭️ Culture Meetups
  1. A text-based Ask Me Anything is open about the book "You Have No Right to Your Culture", inviting questions, challenges, or puzzles; the host will try to respond within the next 24 hours.
  2. There’s a meet-up tomorrow at Carmine’s Times Square at 3:15 PM, and attendees should RSVP in the comments so the host has a head count.
  3. All are welcome to join the meet-up, and the host confirmed they are arriving on time.

Berkeley Meetup This Wednesday

Astral Codex Ten • 2133 implied HN points • 03 Jun 25
🎭️ Culture Meetups
  1. There is a meetup happening in Berkeley on June 4 at 6:30 PM. It's a great chance to connect with others in the community.
  2. Anyone is welcome to join, even if you're feeling shy or don't think you fit in. It's all about meeting new people and having fun.
  3. Some special guests may attend, making it a unique opportunity to meet interesting individuals from out of town.

Open Thread 384

Astral Codex Ten • 1927 implied HN points • 02 Jun 25
🎭️ Culture Meetups
  1. There is a weekly open thread where people can discuss anything and ask questions freely. It's a space for open communication.
  2. In-person meetups are happening, giving people a chance to connect with others in the community. This week, there’s a meetup in Berkeley.
  3. Some recent disagreements in discussions are being put to rest, with participants acknowledging they won't continue debating. It shows a willingness to move on and engage in new conversations.

Open Thread 383

Astral Codex Ten • 1858 implied HN points • 26 May 25
🕹 Technology Meetups
  1. There's an open thread where you can talk about anything or ask questions. It’s a place for free conversation.
  2. Meetups are happening around the world, including one in London this week. It’s a good chance to connect with others.
  3. There are several upcoming conferences and courses related to AI and safety. You can get involved and learn more about important topics.

Open Thread 368

Astral Codex Ten • 2959 implied HN points • 10 Feb 25
🕹 Technology Meetups
  1. A biotech company called MiniCircle had mixed research results on a new technology. While there are some positive findings, the effects are much weaker than needed, and more careful testing is required.
  2. Open Philanthropy plans to give out $40 million for AI safety research. They're looking for new ideas in areas like control and generalization, and people can apply for funding.
  3. Students at the University of Chicago have started a rationalist reading and meetup group. They invite anyone interested to join and connect with others who share similar interests.

My Upcoming Events And Potential Meetups, Western U.S. Edition

Singal-Minded • 58 implied HN points • 10 Jan 26
🎭️ Culture Meetups
  1. Two ticketed live events are scheduled. One is Jan 18 in Austin with several guest writers, and the other is Feb 16 in San Francisco with Helen Lewis.
  2. There may also be two West Coast meetups planned that would be limited to primo-only subscribers, but those plans are tentative.
  3. More content is coming soon, and people can either read a free post or buy a paid subscription and tickets to attend the events.

California Events

Bet On It • 75 implied HN points • 05 Dec 25
🏝 Travel Meetups
  1. He’ll be in California from December 7–16 and is doing a series of in-person meetups across the state in multiple cities.
  2. Several events are confirmed with specific dates, times, and venues — Los Angeles lunch on Dec 10 (Maria’s Italian Kitchen), Santa Barbara lunch on Dec 11 (12:30 PM at the UC Santa Barbara Faculty Club), San Francisco Q&A on Dec 13 (5–7 PM at Mox), and a Berkeley dinner on Dec 15 (Steve’s Korean BBQ); some gatherings ask for RSVP or prepayment.
  3. He’s traveling with his son, invites people to say hi if they spot them, and plans to visit Pinnacles National Park during the trip.

Miami meetup with Rob Henderson

Rob Henderson's Newsletter • 303 implied HN points • 20 Dec 24
🎭️ Culture Meetups
  1. There will be a meetup in Miami on December 28 from 8pm to 11:30pm. It's a good chance to relax and enjoy some new company after the holiday rush.
  2. Previous meetups have been fun and successful, helping people connect and make new friends. Even if you're shy, it's a great way to meet approachable people.
  3. The event will feature interesting guests, including a venture capitalist and the founders of a healthy snack brand. It's a nice opportunity to chat with different people and expand your network.

Unconferences: A Better Way to Run Meetups (28/30)

psychotechnology • 8 implied HN points • 29 Nov 25
🎭️ Culture Meetups
  1. Conversations after talks are often the most valuable part of a meetup, and turning that social time into an unconference helps people make deeper, serendipitous connections.
  2. An unconference uses a visible write-in schedule of tables and time slots so anyone can propose and run short sessions, and it naturally lets groups keep talking or form open discussion circles.
  3. It requires little prep but organizers should clearly signal time, explain and invite participation, pre-seed a few topics, and aim for about 25–40+ attendees for the format to work best.

[EVENT] Receipt Printer meetup TOMORROW!! 🧾

vrk loves paper • 39 implied HN points • 25 Oct 23
🕹 Technology Meetups
  1. There is a Receipt Printer Meetup happening tomorrow in Brooklyn, NY, where people can learn about thermal printers. It's a casual event for those curious about printers, whether they know much about them or not.
  2. The meetup will feature a show-and-tell of various receipt printer projects, plus a chance to hang out with others who share this interest. Attendees can also see and try out different printers, including cat printers.
  3. Even though there won’t be snacks or drinks, it’s a fun, relaxed setting where people can connect. If anyone can't make it, there will be a recap in the next newsletter.

Nashville Meetup - Feb 20th

Marginally Compelling • 7 implied HN points • 12 Feb 25
🎭️ Culture Meetups
  1. There's a meetup in Nashville on February 20th where you can meet friends and new people.
  2. You can sign up for a free trial to read more about the event and the author's posts.
  3. It's a good opportunity to socialize and connect with others in the area.

February RSS AI and Data Science newsletter - anything to contribute?

RSS DS+AI Section • 0 implied HN points • 18 Jan 25
🕹 Technology Meetups
  1. The next newsletter for AI and Data Science will come out in early February. It’s a good chance to stay updated.
  2. You can contribute to the newsletter if you have announcements, meetups, or jobs to share. Just reach out directly instead of replying to the email.
  3. Make sure to send your contributions to the specified email to ensure they are included.

What we learned at the 11th Street Bridge Park

The New Urban Order • 0 implied HN points • 07 Oct 23
🎭️ Culture Meetups
  1. A group of subscribers recently met up for a tour and discussion about the DC Bridge Park, illustrating the joy of connecting with like-minded individuals passionate about cities and urban exploration.
  2. The experience of the meet-up was enjoyable and left the author eager to organize another subscriber gathering for the following month.
  3. The post offers a 7-day free trial to access more content from The New Urban Order, encouraging readers to explore further insights and discussions about urban environments.