LOCAL VALIDATION · NO API

Check evidence and comparison reports locally

Open an OpenGPT Evidence v1 or v2 package, or a report exported by Private comparison. OpenGPT checks format, declared values, internal consistency, and known secret patterns without calling a model.

✓No API or API key requiredThe file stays in this browser and is never uploaded.

Choose evidence or report JSONJSON only · maximum 5 MB

Build a compatible evidence package

Download JSON Schema Download demo JSON Create a comparison report

The demo is synthetic and can only demonstrate format checks.

Ready for a local check

Choose an evidence file to see every required check and a local summary.

This checks structure and declared consistency. Suite and output hashes are declared values only; model identity, output origin, and provider authenticity are not verified.

A portable, provider-neutral workflow

1Generate anywhereRun the frozen evaluation suite in your own environment or with any provider.

2Validate locallyOpen the evidence JSON here to check structure, values, hashes, and secret safety.

3Keep the receiptUse the local file fingerprint to identify the exact evidence package you reviewed.