{"podcast":{"title":"Tech Companies Tech Brief By HackerNoon","slug":"tech-companies-tech-brief-by-hackernoon-6365644","podcast_index_feed_id":6365644,"rss_url":"https://feeds.transistor.fm/tech-companies-tech-brief-by-hackernoon","website_url":"https://hackernoon.com/c/tech-companies","image_url":"https://img.transistorcdn.com/cg9XMHWlmFPejmVOx0mGxCZRnGkV3ZPsK38yP7WY1a4/rs:fill:0:0:1/w:1400/h:1400/q:60/mb:500000/aHR0cHM6Ly9pbWct/dXBsb2FkLXByb2R1/Y3Rpb24udHJhbnNp/c3Rvci5mbS9zaG93/LzQxNDI4LzE2ODM1/ODMzNTYtYXJ0d29y/ay5qcGc.jpg","author":"HackerNoon","episode_count":100,"summary":"Learn the latest tech companies updates in the tech world.","last_synced_at":"2026-06-17T06:20:18.995294+00:00","page_url":"https://stenobird.com/podcast/tech-companies-tech-brief-by-hackernoon-6365644"},"episode":{"title":"OpenAI Open-Sources Privacy Filter, a Tiny Model That Scrubs PII Without an API Call","slug":"openai-open-sources-privacy-filter-a-tiny-model-that-scrubs-pii-without-an-api-call","published_at":"2026-04-23T16:00:36+00:00","page_url":"https://stenobird.com/podcast/tech-companies-tech-brief-by-hackernoon-6365644/openai-open-sources-privacy-filter-a-tiny-model-that-scrubs-pii-without-an-api-call","show_page_url":"https://stenobird.com/podcast/tech-companies-tech-brief-by-hackernoon-6365644","url":"https://share.transistor.fm/s/71ea78f5","audio_url":"https://media.transistor.fm/71ea78f5/b5666516.mp3","summary":"This story was originally published on HackerNoon at: https://hackernoon.com/openai-open-sources-privacy-filter-a-tiny-model-that-scrubs-pii-without-an-api-call . OpenAI open-sourced Privacy Filter, a 50M-active-parameter model that detects and masks PII locally in one pass. Here's what's actually new, and what's hype. Check more stories related to tech-companies at: https://hackernoon.com/c/tech-companies . You can also check exclusive content about #openai , #open-source , #privacy-filter , #openai-privacy-filter , #tiny-model , #ai , #openai-open-sources , #hackernoon-top-story , and more. This story was written by: @abstraction . Learn more about this writer by checking @abstraction's about page, and for more stories, please visit hackernoon.com . OpenAI released Privacy Filter under Apache 2.0 — a 1.5B-parameter (50M active) bidirectional token-classification model that detects and masks PII in text locally, in a single forward pass. It runs on a laptop, supports 128K context, hits 96% F1 out of the box, and is fine-tunable with minimal data. Eight entity categories: names, addresses, emails, phones, URLs, dates, account numbers, and secrets. It's context-aware (not regex), ships with a CLI and eval tooling, and slots into the same open-weight ecosystem as gpt-oss. The catch: multilingual support is thin, adversarial formatting breaks it, and the benchmark validation used OpenAI's own models to grade OpenAI's model.","meta_description":"This story was originally published on HackerNoon at: https://hackernoon.com/openai-open-sources-privacy-filter-a-tiny-model-that-scrubs-pii-without-an-ap…","key_points":[],"chapters":[],"topics":[],"duration_seconds":621,"processing_state":"not_requested","actions":[{"name":"request_transcript","method":"POST","url":"https://stenobird.com/v1/public/podcasts/tech-companies-tech-brief-by-hackernoon-6365644/episodes/openai-open-sources-privacy-filter-a-tiny-model-that-scrubs-pii-without-an-api-call/transcription-requests","description":"Idempotently request low-priority transcript generation for this episode."},{"name":"read_markdown","method":"GET","url":"https://stenobird.com/podcast/tech-companies-tech-brief-by-hackernoon-6365644/openai-open-sources-privacy-filter-a-tiny-model-that-scrubs-pii-without-an-api-call.md","description":"Read the agent-friendly Markdown representation of this episode resource."}]}}