Simon Willison’s Newsletter
Investor Due Diligence Report
substackAI
AI, LLMs, web engineering, open source, data science, Datasette, SQLite, Python and more.
58K
+2.7%
5.3
72.8
0.13%
(comments + likes) / subscribers
Weekly
1.1 posts/week
76/100
Consistent (~6.4d avg)
| Newsletter | Subscribers | Weekly Growth | Price | Platform |
|---|---|---|---|---|
| How to AI | 631K | +5.5% | $120/mo | substack |
| Latent.Space | 182K | +0.3% | $8/mo | substack |
| The AI Corner | 151K | +2.8% | $89/mo | substack |
| The Product Compass | 135K | +0.4% | $15/mo | substack |
| Import AI |
Platform Dependency
Hosted on substack subdomain
Publishing Consistency
Regular publishing schedule
Key Person
Single-author publication — key-person dependency
Audience Concentration
Consistent engagement across posts
Subscriber threshold
58K subscribers — above the 3K category median for first paid tier
Has paid tier
No paid subscription tier yet
Peer monetization
100% of 48 similar-size peers in AI have paid tiers
Disclaimer: This report is generated automatically based on publicly available data and proprietary estimation models. Estimated subscriber counts are derived from engagement patterns and should be verified through direct disclosure. Revenue estimates are based on known pricing and estimated paid subscriber counts. This report is for informational purposes only and should not be the sole basis for investment decisions.
Score based on available components only.
| Component | Score | Weight |
|---|---|---|
| Engagement Rate | 49/100 | 30% |
| Growth Consistency | 89/100 | 15% |
| Publishing Consistency | 78/100 | 10% |
| 127K |
| +0.9% |
| $10/mo |
| substack |
Revenue Model
Pre-monetization — no paid subscription tier