Loops vs Substack
as AI assistants see them, week of 2026-09-28
Loops and Substack both stay fairly niche in AI answers, with Substack edging ahead overall (score 14 vs 7, named in 11 of 59 answers versus 8 of 59). Substack owns the newsletter question outright, named in all 3 of 3 answers for "best newsletter platform," and shows up for paid-newsletter and sponsor-focused queries too. Loops does better on technical ground, getting named in 2 of 3 answers for automated onboarding and drip emails. Head to head across shared questions, it's an even split: 6 wins each and 8 ties. Neither tool appears for small-business or solo-creator free-tier questions.
Head to head
| metric | Loops | Substack |
|---|---|---|
| score | 7 | 14 |
| questions won | 7 | 7 |
By assistant
Loops
| assistant | score | named in, this week | usual spot, this week |
|---|---|---|---|
| ChatGPT | 5 | 5% of answers | #1.0 |
| Claude | 17 | 35% of answers | #8.3 |
| Gemini | not sampled this week | ||
| Perplexity | 0 | 0% of answers |
Substack
| assistant | score | named in, this week | usual spot, this week |
|---|---|---|---|
| ChatGPT | 9 | 11% of answers | #2.5 |
| Claude | 26 | 35% of answers | #3.4 |
| Gemini | not sampled this week | ||
| Perplexity | 8 | 10% of answers | #3.0 |
Where they differ
Only Loops gets named for
- What's the best tool for automated onboarding and drip emails?
- What's the best email platform for a SaaS startup?
- What's the best email platform for developers with a clean API?
- What's the best email platform that doesn't charge for duplicate subscribers?
- What's the best alternative to Mailchimp?
- What's the best email platform that segments users by behaviour?
Only Substack gets named for
- What's the best newsletter platform?
- What's the best email tool for selling a paid newsletter?
- What's the best email tool for a newsletter with sponsors and ads?
- Which email platform is best for a solo creator?
- What are the best email marketing platforms?
- What are the best free email marketing tools?
More comparisons
- Loops vs Sender
- Buttondown vs Loops
- Constant Contact vs Loops
- Braze vs Loops
- EmailOctopus vs Loops
- Customer.io vs Substack
Not sold on either?
Scores count how often each assistant names a product, weighted by position. How the score works · Full Email marketing platforms leaderboard