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Artwork for Astral Codex Ten Podcast

Astral Codex Ten Podcast

Jeremiah
Scott Alexander
Artificial Intelligence
ACX Grants
Openai
Education
Consciousness
Covid-19
Trump
Substack
Boomers
Book Review Contest
Intelligence
Heritability
Roman Empire
AI Art Turing Test
AI Safety
Prediction Markets
Parenting
United States Elections
AI Art

The official audio version of Astral Codex Ten, with an archive of posts from Slate Star Codex. It's just me reading Scott Alexander's blog posts.

PublishesDailyEpisodes1170Founded9 years ago
Number of ListenersCategories
ScienceTechnology

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Artwork for Astral Codex Ten Podcast

Latest Episodes

In recent posts on Trump and dictatorship, people have asked me - how do you know you're not suffering from Trump Derangement Syndrome?

I take this seriously; we've all lost loved ones to this condition. The best check on my reasoning would be an... more

The most controversial part of last week's article on the Midjourney ultrasound scanner was medical experts' recommendation against whole-body screening (including existing whole-body screening technology using MRI).

Isn't this crazy? Whole-body sc... more

like that, except from a medium-sized startup instead of a tech giant.

Earlier today, they announced a pivot to medical scanners. The new MidJourney Scanner, which they describe as "a bold new kind of machine to reimagine the foundations of healthc... more

In 1917, three children in Fatima, Portugal claimed to have seen the Virgin Mary. They promised she would perform a miracle on a certain day in October. Nearly 100,000 pilgrims arrived, hoping to see whatever happened, and nearly all report that the ... more

Key Facts

Accepts Guests
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Number of Listeners
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Recent Guests

Alexander Sasha Putilin
Guest author reading their own post on neural entrainment and replication of an EEG learning study
Independent researcher / ACX grant recipient
Episode: Never Cross a River Four Feet Deep on Average
David Speiser
Author of Ollentay review; wrote the guest post read on the episode
Episode: Last Rights
Alex Bates
Statistician and health economist from Oxford
Personal blog
Episode: Non-Book Review Contest 2025 Winners
Alex King
Engineer from San Francisco involved in community mentoring and blogging
King of Daydreams
Episode: Non-Book Review Contest 2025 Winners
Mika Estes
Neuroscientist and immunologist managing a research lab
The Journal Club with Mika
Episode: Non-Book Review Contest 2025 Winners
Chris Finkel
Manager of a makerspace in Central Florida
The Viewer From Nowhere
Episode: Non-Book Review Contest 2025 Winners
John V.
Neuroscientist and AI researcher
Theories of Intelligence
Episode: Non-Book Review Contest 2025 Winners
Oliver Kump
Former professional Muay Thai fighter turned writer
Episode: Non-Book Review Contest 2025 Winners
Laura Gonzalez Salmeron
Works on advising team at 80,000 Hours, pursuing a PhD
80,000 Hours
Episode: Non-Book Review Contest 2025 Winners

Host

Scott Alexander
Host of the show, reading Scott Alexander's blog material; affiliation commonly listed as Astral Codex Ten.

Reviews

4.8 out of 5 stars from 375 ratings
  • Incredibly good

    Worth listening for hundreds of hours

    Apple Podcasts
    5
    macneilmacneil
    United Statesa year ago
  • A rare open minded and novel consideration of the concept of "race" which deftly avoids polarized viewpoints

    Podcast Addict
    5
    indigonegative
    2 years ago
  • Awesome

    Awesome but sometimes confusing to listen to due to the original being text

    Apple Podcasts
    5
    Rallzor
    Sweden3 years ago
  • The most interesting podcast.

    The content of Scott Alexander’s blog is phenomenal, and the narration is perfect. This is the best podcast.

    Apple Podcasts
    5
    Tamarindophoto
    United States3 years ago
  • Excellent audio and great content

    Excellent audio and great content

    Apple Podcasts
    5
    Sage5763
    Australia3 years ago

Listeners Say

Key themes from listener reviews, highlighting what works and what could be improved about the show.

Great source of well-written ideas; narration is soothing and professional.
Excellent audio and clear delivery makes complex blog material accessible.
High-quality narration and thoughtful essays; intellectually engaging.
Content is consistently insightful, though some posts are lengthy or dense.

Chart Rankings

How this podcast ranks in the Apple Podcasts, Spotify and YouTube charts.

Apple Podcasts
#225
United States/Technology
Apple Podcasts
#213
Australia/Technology
Apple Podcasts
#82
Hong Kong/Technology
Apple Podcasts
#132
Finland/Technology
Apple Podcasts
#143
Israel/Technology
Apple Podcasts
#171
Poland/Technology

Talking Points

Recent interactions between the hosts and their guests.

Defying Cavity: Lantern Bioworks FAQ
Q: Is it dangerous to have bacteria secreting alcohol in your mouth? Will you get drunk?
Most people already have some alcohol secreting bacteria in their bodies, and the amount produced by BCS3L1 is not significant enough to cause intoxication.
Defying Cavity: Lantern Bioworks FAQ
Q: How do you use it?
To apply, you brush your teeth with a special pumice-based product that removes your existing tooth bacteria, then swab it on with a Q-tip.

Audience Metrics

Listeners, social reach, demographics and more for this podcast.

Listeners per Episode
Gender Skew
Location
Interests
Professions
Age Range
Household Income
Social Media Reach

Frequently Asked Questions About Astral Codex Ten Podcast

What is Astral Codex Ten Podcast about and what kind of topics does it cover?

This show is a high-quality audio reading of long-form essays from a singular, analytic blogger's archive. Episodes span philosophy, politics, science, technology, and culture, often blending rigorous argument with accessible storytelling. Listeners frequently encounter thoughtful critiques, historical context, and meta-discussion about ideas, with a strong emphasis on clarity and intellectual honesty. A notable strength is the calm, professional narration that makes dense posts approachable, turning dense blog content into a consistent, thought-provoking audio experience. The format is especially appealing to listeners who prefer deep-dive essays over short-form takes and who value careful reasoning across a broad intellectual landscape.

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How many listeners does Astral Codex Ten Podcast get?

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Which podcasts are similar to Astral Codex Ten Podcast?

These podcasts share a similar audience with Astral Codex Ten Podcast:

1. Dwarkesh Podcast
2. Conversations with Tyler
3. Clearer Thinking with Spencer Greenberg
4. Complex Systems with Patrick McKenzie (patio11)
5. EconTalk

How many episodes of Astral Codex Ten Podcast are there?

Astral Codex Ten Podcast launched 9 years ago and published 1170 episodes to date. You can find more information about this podcast including rankings, audience demographics and engagement in our podcast database.

How do I contact Astral Codex Ten Podcast?

Our systems regularly scour the web to find email addresses and social media links for this podcast. We scanned the web and collated all of the contact information that we could find in our podcast database. But in the unlikely event that you can't find what you're looking for, our concierge service lets you request our research team to source better contacts for you.

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What guests have appeared on Astral Codex Ten Podcast?

Recent guests on Astral Codex Ten Podcast include:

1. Alexander Sasha Putilin
2. David Speiser
3. Alex Bates
4. Alex King
5. Mika Estes
6. Chris Finkel
7. John V.
8. Oliver Kump

To view more recent guests and their details, simply upgrade your Rephonic account. You'll also get access to a typical guest profile to help you decide if the show is worth pitching.

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