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Razib Khan's Unsupervised Learning

Razib Khan's Unsupervised Learning Add us as a preferred source on Google

Substack @razib Science
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🔒 Paid proposals held safely in escrow — released only when the work's approved.

📣Sponsored placementThe primary sponsor slot at the top of a regular issue — your message in front of an engaged, opted-in inbox. $147→ 📝Sponsored post (editorial)A full post written in my voice featuring your product — newsletter readers trust the writer, so native beats a banner. $265→ 📧Dedicated sendA whole solo email to my list about you — the entire inbox moment is yours. My highest-impact slot. $382→ 🔖Classified / footer adA short text ad in the footer of an issue — the affordable entry point that still reaches the whole list. $44→ 📦Package / presenting sponsorRecurring placements across several issues — "brought to you by YourBrand" for the month. Familiarity compounds. $441/mo→ ⭐Paid recommendationI recommend your newsletter or product to my subscribers via Substack's recommendation network — a warm intro that converts to signups far better than a socia… $176→ 🎙️Podcast ad (host-read)A host-read ad on my Substack podcast — my voice, my listeners. $221→ 🔗Affiliate / commissionOngoing affiliate mentions in my issues. The monthly fee is a placement retainer; you set a commission (paid via your affiliate program) on the sales it drives. $74/mo→ 🤝Cross-promo swapWe recommend each other to our lists — a value swap between newsletters via the recommendation network. Swap or paid→ 📞1:1 ConsultPaid video call — advice, coaching or Q&A $75/hr→

Every booking is a normal escrow-protected deal.

Subscribers
56K
Account age
5 yrs
🎁 Free analysisfor Razib Khan's Unsupervised Learning
🕵️Fake Followers CheckReal-audience % & bot risk→ 📊Engagement rateBenchmarked vs. peers→ 💰What they chargeFair sponsored-post price→

💡 Facts

🗓️Joined Substack in 2020 — 5 years ago.
📤Posts about 1.2× per week.
💬0.06% engagement rate.
🏅Earned the 10K Subscribers for passing 10K subscribers.

👥 Audience demographics

Estimated

Modeled from this creator's niche, platform & region — a niche benchmark, not this creator's real audience data.

Gender split
Male 74% Female 26%
Age · peak 18-24
13-179%
18-2436%
25-3430%
35-4414%
45+11%
Top geographies
  • United States34%
  • India11%
  • United Kingdom8%
  • Brazil6%
  • Indonesia5%
Audience language
  • English88%
  • Other12%
Likely interests
EntertainmentLifestyleTrending

💬 Newsletter engagement

Measured

Real reader activity from the last 12 posts — reactions, comments and restacks are public on every Substack post.

33
❤ avg reactions / post
4
💬 avg comments / post
4
🔁 avg restacks / post
0.06%
Solidreaction rate
Free issues (reach the whole list) vs paywalled
25% free

Mostly paywalled — the free issues are the sponsor-reachable surface.

About

Conversations on population genetics, evolution, history, books, and culture

🔀 Audience overlap

Estimated

Estimated shared audience with similar creators — useful for avoiding overlap (or doubling down) when planning a campaign.

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Frequently asked questions

How much does Razib Khan's Unsupervised Learning charge for a sponsorship?
Razib Khan's Unsupervised Learning hasn't published fixed prices yet. Send a proposal through SocialDB and agree terms directly — your payment is held in escrow until the work is approved.
How do I contact Razib Khan's Unsupervised Learning for a brand deal or collaboration?
Send a paid deal or collab request right here on SocialDB — we notify Razib Khan's Unsupervised Learning, and once they accept, your payment is held safely in escrow and released when the work is approved. You don't need to track down an email.
How many subscribers does Razib Khan's Unsupervised Learning have?
Razib Khan's Unsupervised Learning has 56,000 subscribers on Substack.

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