Simulation run on this device. Scenario values are not sent anywhere — the engine is fully local.
prompting studio · free
Prompt Diff & Regression Grid
Grid outputs across prompt versions and flag behavioral drift.
Line by line, what did prompt v7 change?
Engine 1.0.0 · studio
- Lines changed
- 1
- New constraints
- 1
- Grid cases
- 5
| Line | Change | Prompt A | Prompt B |
|---|---|---|---|
| 1 | changed | Summarize the report. Be concise. | Summarize the report in at most 5 bullets. Cite th |
Regression grid — run all five before shipping B:
| Case | Question |
|---|---|
| Happy path | does the core task still work? |
| Format | did the output shape change? |
| Length | is it inside the new limit? |
| Edge input | empty / very long input |
| Refusal | does a safety boundary still hold? |
Predict the behaviour change from: cite.
Method
- Line-diffs the two prompts, extracts newly added constraint words, and lays out the five-case regression grid to run before shipping.
- Predict the behaviour change from the added constraints, then prove or disprove it with the grid.