POLAR-Bench: Evaluating Privacy-Utility Trade-offs in LLM Agents

๐กDiscover why smaller open-weight models struggle with privacy and how to audit your agent's data protection capabilities
โก 30-Second TL;DR
What Changed
Introduces a 5x5 diagnostic surface to measure privacy and utility across 10 domains and 7,852 samples.
Why It Matters
This benchmark highlights a critical security gap for developers deploying local or private LLM agents. It provides a standardized way to audit models before integrating them into systems that handle sensitive user information.
What To Do Next
Run your current on-device or private LLM agent against the POLAR-Bench framework to identify specific privacy leakage points before production deployment.
Key Points
- โขIntroduces a 5x5 diagnostic surface to measure privacy and utility across 10 domains and 7,852 samples.
- โขFrontier models successfully withhold over 99% of protected attributes during adversarial probing.
- โขSmaller 1-30B open-weight models show significant vulnerabilities, with some leaking over 50% of protected data.
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Original source: ArXiv AI โ