--- title: "Privacy filter: personal data masked, with a map back | Astroware" description: "The privacy filter looks for personal data in what you send and masks it before it reaches the model. The answer carries a map back to the originals; putting them back is your step." url: https://astroware.ai/haloguard-eu/privacy-filter language: en-GB --- HaloGuard EU Privacy filter Live # Personal data masked, with a map back. For teams that send customer or staff text to an AI model. Looks for personal data in what you send and masks it before it reaches the model. The answer carries a map back to the originals; putting them back is your step. [Try it on your text](https://astroware.ai/pii-checker) [Start free](https://console.astroware.ai/sign-in) Free. No sign-up. Tested in the 24 official EU languages. Model: privacy. The same endpoint, key and price as HaloGuard EU. The privacy filter is part of HaloGuard EU. [The HaloGuard EU page](https://astroware.ai/haloguard-eu) 1. 01 Your text 2. 02 Find 3. 03 Mask 4. 04 Map back The answer carries a map back to the originals; putting them back is your step. What reaches the model Write to \[PERSON\_1\] at \[EMAIL\_1\] about the Q3 report. map \[PERSON\_1\] Anna Schmidt \[EMAIL\_1\] anna.schmidt@example.com 04 / 04 ## Where it sits The privacy filter looks for personal data in what users send and masks it before it reaches the model. The answer carries a map back to the originals; putting them back in the reply is your step. Your app, the filter, and your model Your app Write to Anna Schmidt at anna.schmidt@example.com … Privacy filter Write to \[PERSON\_1\] at \[EMAIL\_1\] about the Q3 report. Your model Gets \[PERSON\_1\] and \[EMAIL\_1\] in their place. The map goes back to your app with the answer: \[PERSON\_1\] → Anna Schmidt ## You choose what it masks Each company chooses what it masks. ### All personal data The default. ### All but names ### All but the kinds you choose ### Off Nothing is masked. Unless masking is off, it masks the passwords, access keys and card security codes it recognises. ## Results on public benchmarks Share of personal values found, per benchmark. Loose mode looks for names and usernames, email addresses, phone numbers, postal addresses, dates of birth, personal links and IP addresses, bank and card numbers, ID, passport and VAT numbers, passwords and keys. Strict mode looks for everything loose mode does, plus any date, codes, places, organisations and job titles. | Benchmark | Languages | Texts scored | Our privacy filter (strict mode) | Our privacy filter (loose mode) | Open model openai/privacy-filter (default settings) | | --- | --- | --- | --- | --- | --- | | REDACT (terms) | 12 EU | 480 | 99.3% | 99.1% | 89.0% | | SPY | 1 | 1,000 | 99.6% | 98.7% | 86.8% | | PII-TRACE\* | 1 | 250 | 100% | 88.9% | 93.0% | | Kiji\* | 6 | 1,002 | 99.1% | 92.5% | 85.3% | | Gretel finance\* | 7 | 1,001 | 96.3% | 94.0% | 79.1% | | Gretel English | 1 | 1,000 | 99.8% | 98.8% | 93.7% | Our filter also masks more text around personal data than the open model: about 2 to 3.5 times the personal data itself, against about 1 to 2 times. \* We used other samples from this benchmark while building our filter. The samples scored here were not used. REDACT: records from its evaluation split, EU languages only. SPY: English legal and medical questions. PII-TRACE (Perplexity): English multi-turn chat. Kiji (Dataiku): customer support messages. Gretel finance (Gretel): financial documents. Gretel English (Gretel): documents from many domains. ## The API ## How to call it 1. 01 A person at your company signs in to the console and creates a key. The key is shown once. 2. 02 POST https://api.astroware.ai/v1/chat/completions, with the header Authorization: Bearer . 3. 03 Set "model" to "privacy". 4. 04 The answer carries the masked conversation, a map back to the originals and the kinds found. Send masked\_messages on instead. Putting the originals back into your model’s reply with map is your step. Read the [EU Mode API docs](https://astroware.ai/docs/eu-mode) before the first call. Request body ``` {"model": "privacy", "messages": [ {"role": "user", "content": "Write to Anna Schmidt at anna.schmidt@example.com about the Q3 report."}]} ``` Recorded answer, inside content, shortened ``` {"check": "privacy", "decision": "mask", "personal_data": ["email", "person"], "masked_messages": [{"role": "user", "content": "Write to [PERSON_1] at [EMAIL_1] about the Q3 report."}], "map": {"[PERSON_1]": "Anna Schmidt", "[EMAIL_1]": "anna.schmidt@example.com"}, "privacy_mode": "all"} ``` ## Pricing Hosted API Live $30 / billion input tokens - Output tokens are free on all models. - The same endpoint, key and price as HaloGuard EU. - Tokens of your text are counted each time they go through a model: text sent to two models, or through two checks in eu-mode, is counted twice. Start with a $5 trial budget [Start free](https://console.astroware.ai/sign-in) Enterprise rates Volume pricing, on an Order - For high volumes, a per-token rate agreed for your usage, with invoicing and payment terms to suit. - Prices can be set in euros. [Book a call](https://calendar.app.google/6S2eq9HLADdrN8Ct9) Free tool ## See what it finds in your own text. Paste any text. See the personal data our privacy filter finds in it, and the same text with that data masked. [Try it on your text](https://astroware.ai/pii-checker) [Book a call](https://calendar.app.google/6S2eq9HLADdrN8Ct9) Free. No sign-up. Tested in the 24 official EU languages. ## Questions your security team will ask Which model name do we call? privacy Set "model" to "privacy". The same endpoint, key and price as HaloGuard EU. Who puts the originals back? You The answer carries a map back to the originals; putting them back is your step. Can we choose what it masks? Yes All personal data by default, all but names, all but the kinds you choose, or off. Which languages does it work in? 24 It was tested in the 24 official EU languages. Where does it run? EU Hosted in the EU. Details on our Trust page. The privacy filter is part of HaloGuard EU. [The HaloGuard EU page →](https://astroware.ai/haloguard-eu)