OpenAI Privacy Filter goes open-weight (Apache 2.0!)

Reddit r/LocalLLaMA / 4/23/2026

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Key Points

OpenAI’s Privacy Filter has been released as an open-weight model under the Apache 2.0 license, making it available for broader use beyond a hosted API.
The 1.5B-parameter system detects and redacts personally identifiable information (PII) locally, avoiding the need to send data to external services.
It reportedly achieves 96% F1 on PII detection and is designed to run on-device.
The release is described as one of OpenAI’s most practically useful updates in months, highlighting its real-world privacy and deployment value.
The move to open source/open weights is expected to lower adoption barriers for teams building privacy-preserving workflows.

April 22nd—yesterday. A 1.5B parameter model that detects and redacts PII locally, no API calls needed. 96% F1 on PII detection. Runs on-device. Honestly? This is one of the most practically useful releases from OpenAI in months, and it's actually open source.

submitted by /u/Equivalent_Tennis_20
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