Cosmos Institute
Investor Due Diligence Report
substackAI
The Academy for Philosopher-Builders. Building AI for human flourishing.
20K
1.4K paid
~0%
Subscriber count is a platform estimate
Pricing
$10/mo
$100/yr annual option
$11K
1.4K paid subs
$11K/mo – $11K/mo(±0%)
Previously Weekly
1.0 posts/week
69/100
Consistent (~6.9d avg)
| Newsletter | Subscribers | Weekly Growth | Price | Platform |
|---|---|---|---|---|
| AI Report | 58.5K | +0.9% | $12/mo | substack |
| MarTech AI | 48K | N/A | $15/mo | substack |
| Market Sentiment | 44K | N/A | $97/mo | substack |
| AI Safety Newsletter | 44K | N/A | Free | substack |
| Month | Subscribers | Est. Revenue | Change |
|---|---|---|---|
| Feb 2026 | 17K | $9,460.5 | — |
| Mar 2026 | 18.5K | $10,295.25 | +8.8% |
| Apr 2026 | 20K | $11,130 | +8.1% |
Platform Dependency
Uses substack platform
Publishing Consistency
Variable publishing frequency
Key Person
Single-author publication — key-person dependency
Revenue Model
Active paid subscription tier
Subscriber threshold
20K subscribers — above the 3K category median for first paid tier
Has paid tier
Active paid subscription offering
Peer monetization
100% of 79 similar-size peers in AI have paid tiers
Pricing position
$10/mo vs $7.5/mo category median (621 newsletters)
| Date | Monthly | Annual |
|---|---|---|
| Mar 2026 | $10 | $100 |
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 |
|---|---|---|
| Paid Subscriber Ratio | 75/100 | 25% |
| 43K |
| N/A |
| $79/mo |
| substack |