Deep (Learning) Focus
Investor Due Diligence Report
substackAI
I contextualize and explain important topics in AI research.
Investor Due Diligence Report
I contextualize and explain important topics in AI research.
77K
7.3K paid
+0.7%
+2.7%
net growth
Pricing
$5/mo
$50/yr annual option
$29K
7.3K paid subs
$29K/mo – $29K/mo(±0%)
4.8
157.0
0.21%
(comments + likes) / subscribers
Monthly
0.3 posts/week
88/100
Very Consistent (~24.0d avg)
| Newsletter | Subscribers | Weekly Growth | Price | Platform |
|---|---|---|---|---|
| How to AI | 984K | +1.0% | $120/mo | substack |
| One Useful Thing | 485K | +0.6% | $10/mo | substack |
| Sabrina Ramonov 🍄 | 299K | +2.6% | Free | substack |
| Almost Timely Newsletter | 290K | N/A | Free | substack |
| Month | Subscribers | Est. Revenue | Change |
|---|---|---|---|
| Feb 2026 | 63K | $23,790.38 | — |
| Mar 2026 | 66K | $24,923.25 | +4.8% |
| Apr 2026 | 67K | $25,300.88 | ~0% |
| May 2026 | 68K | $25,678.5 | ~0% |
| Jun 2026 | 70.5K | $26,624.55 | +3.7% |
| Jul 2026 | 72K |
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
77K subscribers — above the 3K category median for first paid tier
Has paid tier
Active paid subscription offering
Peer monetization
76% of 38 similar-size peers in AI have paid tiers
Pricing position
$5/mo vs $5/mo category median (428 newsletters)
| Date | Monthly | Annual |
|---|---|---|
| Mar 2026 | $5 | $50 |
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.
| Component | Score | Weight |
|---|---|---|
| Engagement Rate | 75/100 | 30% |
| Paid Subscriber Ratio | 100/100 | 25% |
| Growth Consistency | 96/100 | 15% |
| Publishing Consistency | 66/100 | 10% |
| 257K |
| +2.9% |
| Free |
| substack |
| $27,189 |
| +2.1% |
| Aug 2026 | 73K | $27,566.63 | ~0% |
| Sep 2026 | 75K | $28,321.88 | +2.7% |
| Oct 2026 | 76K | $28,699.5 | ~0% |
Revenue Model
Active paid subscription tier