Customer.io vs Ghost
as AI assistants see them, week of 2026-09-28
Customer.io and Ghost land close together overall, scoring 13 and 15 out of 100, with Ghost named slightly more often, 13 of 59 answers versus 12 of 59 for Customer.io. They shine in different corners: Customer.io shows up in every answer for automated onboarding and drip email questions, and behaviour-based segmentation, while Ghost sweeps questions about open-source or self-hosted newsletter tools and general newsletter platform picks. Neither gets named for free email tools, small-business picks, or platforms avoiding duplicate-subscriber charges. Head to head across shared questions, they're evenly matched, each coming out ahead 5 times, with 10 questions ending in a tie.
Head to head
| metric | Customer.io | Ghost |
|---|---|---|
| score | 13 | 15 |
| questions won | 7 | 7 |
By assistant
Customer.io
| assistant | score | named in, this week | usual spot, this week |
|---|---|---|---|
| ChatGPT | 10 | 11% of answers | #1.5 |
| Claude | 19 | 35% of answers | #6.9 |
| Gemini | not sampled this week | ||
| Perplexity | 14 | 15% of answers | #1.7 |
Ghost
| assistant | score | named in, this week | usual spot, this week |
|---|---|---|---|
| ChatGPT | 15 | 21% of answers | #4.0 |
| Claude | 25 | 35% of answers | #3.9 |
| Gemini | not sampled this week | ||
| Perplexity | 7 | 10% of answers | #4.0 |
Where they differ
Only Customer.io gets named for
- What's the best tool for automated onboarding and drip emails?
- What's the best email platform that segments users by behaviour?
- What's the best email platform for a SaaS startup?
- Which email tool has the best deliverability?
- What's the best email marketing software in 2026?
Only Ghost gets named for
- What's the best open-source or self-hosted newsletter tool?
- 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?
More comparisons
- Customer.io vs Substack
- Customer.io vs HubSpot
- Customer.io vs Loops
- Customer.io vs Omnisend
- Ghost vs Substack
- Ghost vs HubSpot
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