# Hugging Face — How to build scalable web apps with OpenAI's Privacy Filter

- Company: Hugging Face (huggingface.co)
- Announced: 2026-04-27T00:00:00+00:00
- Category: developer-tool-release
- Subject: Platform
- Open weights: yes
- Models affected: Privacy Filter
- License: Apache 2.0
- Context window: 128,000 tokens
- Source: https://huggingface.co/blog/openai-privacy-filter-web-apps
- Record: https://forck.live/items/1511-how-to-build-scalable-web-apps-with-openai-s-privacy-filter

OpenAI released Privacy Filter, an open-source PII detector, on Hugging Face Hub. The blog post demonstrates building three web apps (Document Privacy Explorer, Image Anonymizer, SmartRedact Paste) using gradio.Server with the model.

## Evidence

Verbatim from https://huggingface.co/blog/openai-privacy-filter-web-apps:

> OpenAI released Privacy Filter on the Hub this week: an open-source personally-identifiable information (PII) detector that labels text across eight categories in a single forward pass over a 128k context.

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