Mistral Moderation Playground for Moderation Testing

A Mistral Moderation Playground for Moderation Testing moderation playground is a UI to test moderation prompts and run evals on how Mistral Moderation Playground for Moderation Testing classifies content—useful for policy checks, routing, and safety experiments.

Prompt testing and evaluations for moderation: decision consistency, false positives/negatives on your edge cases, and output formats you can use in an app.

Yes. Bring your API keys. LangFast routes requests through our proxy.

To prevent abuse, apply fair-use limits, and let you save decisions, reuse the same test set for regressions, and share results with your team.

Consistency across repeated runs, how it handles borderline content, and whether it matches your policy categories and thresholds.

Yes. Build a small labeled set of examples (allowed vs disallowed) and score where Mistral Moderation Playground for Moderation Testing over-blocks or under-blocks.

Yes. Prompt for category outputs and measure whether category assignment is stable and useful for routing.

Yes. If you need “label + confidence + rationale,” enforce a schema and evaluate how often formatting breaks.

Yes. Reuse the same labeled examples and rerun after prompt changes or model updates to detect drift in decisions.

Yes. Run the same test set side-by-side to compare strictness, consistency, and cost/latency trade-offs.

Use it to evaluate behavior first. Production policies still need your own rules, monitoring, and provider terms review.

LangFast is free to use with some basic features. You need to provide your own API keys to run models and use the app. When you add your API keys, you pay the model provider (e.g., OpenAI) for the credits/tokens you use. LangFast premium features can be unlocked with a one-time purchase.

Wait for reset or add paid usage to continue running moderation evals.

No. We don’t train on your prompts or content. Sharing is opt-in and retention is configurable.

Requests route to model providers. See the Data & Privacy page for processing regions and details.

LangChain helps you build moderation workflows. LangFast helps you test prompts and evaluate moderation behavior before you implement pipelines.

Those tools manage datasets, evals, and tracing in workflows. LangFast is an interactive bench to test moderation prompts and compare behavior quickly.