battles / Platforms
Kajabi vs Solidus
Kajabi ($179/mo/mo, vibe code 6/10) vs Solidus (usage-based/mo, vibe code 6/10). Solidus is the easier one to rebuild yourself — here is what you lose either way.
Platforms
$179/mo/mo
- MVP
- multi-day
- Full replacement
- weeks, not days
Platforms
usage-based/mo
- MVP
- 2 weeks
- Full replacement
- 8-14 months
easier to rebuild
get the build prompt →price gap / year
$2,148/mo
running both / year
$2,148/mo
our call
Start with Solidus — highest vibe code, weakest moat.
Kajabi
You can build one course checkout or landing funnel, but Kajabi bundles site, course, community, email, automations, payments, analytics, and support.
you can rebuild
- Build the specific funnel/course/membership needed with Stripe, a CMS, email provider, and gated content.
what you lose
- all-in-one stack
- funnels
- email automations
- communities
- course delivery
real moats
- execution-polish
- integrations
open source escape hatches
- CourseLit open source
Solidus
There is no licence to escape. Rebuilding makes sense only if you want to leave Ruby; otherwise you are trading a maintained core for a bespoke one.
you can rebuild
- Catalog, variants and option types
- Cart, checkout and order state machine
- Promotions with basic rules and actions
- Admin interface for orders and products
what you lose
- A maintained upgrade path with a security-conscious core team
- Rails extensions for payments, taxes and reporting
- Free bug fixes from other people's production incidents
real moats
- An active maintainer community absorbing edge cases you have not hit yet
open source escape hatches
- spree/spree BSD-3
- medusajs/medusa MIT
- saleor/saleor BSD-3
Questions people ask
Which is easier to rebuild with AI, Kajabi or Solidus?
Solidus. It scores 6/10 on vibe code with a moat of 2/10, so an AI-assisted MVP takes about 2 weeks and a full replacement about 8-14 months.
Which one costs less, Kajabi or Solidus?
Solidus at usage-based/mo for a typical mid-market store. The gap between the two is about $2,148/mo a year.
What do I lose if I replace Kajabi?
all-in-one stack funnels email automations
What do I lose if I replace Solidus?
A maintained upgrade path with a security-conscious core team Rails extensions for payments, taxes and reporting Free bug fixes from other people's production incidents
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