· design

Stability AI vs Leonardo.Ai

On what the policies say, Stability AI is the better choice for your data: graded D against Leonardo.Ai's F.

Grades read the plan most people are on. Each company's full entry has every plan, every clause and the archived copy it was read from.

Stability AI

Stability AI trains on your Inputs and Outputs unless you opt out. The switch is "Training: Improve the Model for Everyone" in account settings; which way it ships is stated nowhere.

Verdict

By default: Trains on you by default
The way out: A self-serve opt-out exists
What D means: On by default. An opt-out exists, but you have to go looking for it.
Last checked: 5 Oct 2026

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Leonardo.Ai

Leonardo analyses the images and prompts in your account to train its own models, and names no way to stop it.

Verdict

By default: Trains on you by default
The way out: No opt-out in the policy
What F means: On by default, with no way out on the plan you are on — and nothing short of reading the terms would have told you.
Last checked: 8 Jul 2026

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Stability AI: every plan

Stability AI · what each plan can refuse · checked 5 Oct 2026

1 PLAN

Plan

Exposure

Trains

Opt-out path

Retention

De-identified

Human review

All accounts

53 / 100

YES

Self-serve toggle

Not stated

Unknown

How the score is made53 / 100 · the rubric

Default32 / 50

On by default, with a way out

Way out15 / 33

One switch, but the policy never says which way it ships

Paywall0 / 4

No paywall on the control

Scope2 / 4

3 kinds of data are in scope

Human review2 / 4

The policy does not say whether people read it

De-identified2 / 2

Nothing is said about de-identification

EVERY CELL ABOVE IS SOURCED FROM A QUOTED CLAUSE OR A DOCUMENTED SEARCH · SEE THE EVIDENCE ABOVE

EXPOSURE IS SCORED 0–100 ON ONE AXIS, HOW HARD IT IS TO STOP THIS PLAN TRAINING ON YOU. THE GRADE IS THE BAND IT FALLS IN: A 0–10 · B 11–25 · C 26–45 · D 46–60 · E 61–80 · F 81–100. HOW THE SCORE IS SET

All accountsTRAINS: YES

OPT-OUT: Self-serve toggle
RETENTION: Not stated
EXPOSURE: 53 / 100
DE-IDENTIFIED: Not stated
HUMAN REVIEW: Unknown

Leonardo.Ai: every plan

Leonardo.Ai · what each plan can refuse · checked 8 Jul 2026

1 PLAN

Plan

Exposure

Trains

Opt-out path

Retention

De-identified

Human review

All plans

89 / 100

YES

None offered

Not stated

Unknown

How the score is made89 / 100 · the rubric

Default50 / 50

On by default, with no way out on this plan

Way out33 / 33

No route to refuse is stated