Cursor Windsurf (Codeium)
On what the policies say, Cursor is the better choice for your data: graded D against Windsurf (Codeium)'s F.
Cursor
With Privacy Mode off, Cursor trains on your codebase, prompts and editor actions. The switch is free on every plan — but you have to find it.
Verdict
D
- Trains on you by default
- A self-serve opt-out exists
- On by default. An opt-out exists, but you have to go looking for it.
- 5 Oct 2026
Windsurf (Codeium)
Windsurf trains on User Content — which, for a coding assistant, is source code — and makes it conditional on terms held somewhere else.
Verdict
F
- Trains on you by default
- No opt-out in the policy
- On by default, with no way out on the plan you are on — and nothing short of reading the terms would have told you.
- 5 Oct 2026
Cursor: every plan
Cursor · what each plan can refuse · checked 5 Oct 2026
All plans (free and Pro)
YES
Self-serve toggle
Not stated
Not stated
Unknown
32 / 50
On by default, with a way out
15 / 33
One switch, but the policy never says which way it ships
0 / 4
No paywall on the control
2 / 4
3 kinds of data are in scope
2 / 4
The policy does not say whether people read it
2 / 2
Nothing is said about de-identification
All plans (free and Pro)TRAINS: YES
- Self-serve toggle
- Not stated
- 53 / 100
- Not stated
- Unknown
Windsurf (Codeium): every plan
Windsurf (Codeium) · what each plan can refuse · checked 5 Oct 2026
All accounts
YES
None offered
Not stated
Not stated
Unknown
50 / 50
On by default, with no way out on this plan
33 / 33
No route to refuse is stated
0 / 4
No paywall on the control
1 / 4
2 kinds of data are in scope
2 / 4
The policy does not say whether people read it
2 / 2
Nothing is said about de-identification
All accountsTRAINS: YES
- None offered
- Not stated
- 88 / 100
- Not stated
- Unknown