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Testsets are collections of test cases for evaluating prompts. Each row maps to your prompt variables.

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Create a testset

Upload a CSV — create a CSV with column headers matching your prompt variable names (without {{}}). Include an ideal_output column for expected outputs.
Import the CSV and edit it like a spreadsheet — add, delete, or modify rows.
Add test cases from logs — if your logs contain prompt variables, you can add them directly to a testset. Click a log with variables, then click the + button to add it to a testset.