Substack vs Synthesia
Side-by-side comparison of Substack and Synthesia.
Newsletter publishing and monetization in one place
Turn text scripts into talking-head videos instantly
What they are
Substack
Substack is a publishing platform where writers host email newsletters and charge subscribers a recurring fee. Independent journalists, essayists, and niche experts use it to build direct audiences without relying on ad revenue. The platform handles payments, delivery, and a basic website automatically. Substack takes a 10% cut of paid subscription revenue on top of stripe fees, which becomes a real cost as an audience grows.
Synthesia
Synthesia generates studio-quality videos using AI avatars that lip-sync to a typed script, with no camera, microphone, or editing software required. It targets corporate trainers, marketers, and course creators who need to produce multilingual video content at scale. The output looks polished but has a recognizable AI avatar aesthetic that some audiences find less engaging than real presenters. Pricing starts at $14 per month on the Starter plan.
if you need hosting and monetization. It has a usable free tier to start with.
- +Free to start with no upfront cost
- +Built-in payment processing removes the need for a separate tool
- +Readers can comment and respond, creating light community features
if you need ai video. It has a usable free tier to start with.
- +No filming or recording equipment needed
- +125-plus AI avatars and 160-plus languages available
- +Custom avatar creation lets you clone your own likeness
Which to choose
Substack and Synthesia solve different problems, so most people would not choose between them directly. The comparison below helps if you are weighing where to spend budget, or deciding whether you need both.
Read the full reviews for Substack and Synthesia.
Pricing checked 3 Jun 2026.