Definition
Format pass rate measures whether an output meets a structural requirement such as valid JSON, fixed labels, table shape, or a required field list.
AI Agent term
Format Pass Rate
The share of outputs that satisfy a required structure, schema, or formatting rule.
Why it matters
A high-quality paragraph may still be useless to software. Format pass rate helps teams separate human-readable quality from machine-usable reliability.
Example
If 92 of 100 extraction runs produce parseable JSON with required keys, the format pass rate is 92%.