Leonardo.ai vs Stable Diffusion: who uses which
Customers, public proof and the companies that use both.
On usedby, 2 companies use Leonardo.ai and 12 use Stable Diffusion. No company is listed with both yet.Latest check Oct 5, 2026: 12 of 14 public lines checked. Counts include every proof level, job-post signals included. Companies named on both have a confirmed or observed line on each side.
Who uses Leonardo.ai, Stable Diffusion, or both
Every company with a public proof for at least one of the two tools.
2
use only Leonardo.ai
0
companies use both
12
use only Stable Diffusion
2 companies use only Leonardo.ai, 12 use only Stable Diffusion and 0 use both, out of the 14 companies on usedby that use at least one of them.
Where it lands
Newest customers
We have not started tracking changes for Leonardo.ai yet.
Where it lands
Newest customers
No new customer since tracking started on October 4, 2026.
Who uses both
Companies with a confirmed or observed line on both tools.
Side by side
Facts from our data and from each vendor's public pages. Each line says where it comes from.
Leonardo.ai
Stable DiffusionWhat customers report
Results as the vendor or the customer published them, with the source and the date.
Questions about Leonardo.ai and Stable Diffusion
Which is used more, Leonardo.ai or Stable Diffusion?
Stable Diffusion has more customers on usedby: 12 against 2 for Leonardo.ai.
Do companies use both Leonardo.ai and Stable Diffusion?
usedby has not found a company with a confirmed or observed line on both Leonardo.ai and Stable Diffusion yet.
Who uses Leonardo.ai?
2 companies on usedby, each with the public page that shows it. See who uses Leonardo.ai.
Who uses Stable Diffusion?
12 companies on usedby, each with the public page that shows it. See who uses Stable Diffusion.
How does usedby count customers?
A company counts when a public page shows it: a vendor's customer page, a case study, a press release or a job post, most saved with a dated capture. Every line is a customer, at one of three proof levels: confirmed, observed or signal (a job post, the weakest). A company is named as using both tools when its lines on both are confirmed or observed.