PII Shield vs Nightfall AI: keeping personal data out of ChatGPT and Claude

The short answer

Nightfall is a broad enterprise data loss prevention platform that covers AI tools, SaaS apps, email and laptops. PII Shield does one job: it masks personal data on the way into AI tools and restores it in the reply, so staff keep working normally. Choose Nightfall if you want one DLP platform across your whole company. Choose PII Shield if the problem is AI, you want public pricing and a self-serve trial, or you need the real values back in the answer.

Side by side

	PII Shield	Nightfall AI
Browser extension for AI chat	Yes. Chrome, Edge and Brave, on ChatGPT, Claude, Gemini, Copilot, Grok, DeepSeek, Perplexity, Mistral and Kimi	Yes. "Nightfall DLP for Browsers" on Chrome and Firefox; the Firefox listing names ChatGPT, DeepSeek, Copilot, Gemini, Grok, Perplexity and Claude
What happens to personal data	Masks personal data in the chat box before it is sent, then puts the real values back in the AI's reply automatically	Coaches, redacts or blocks before submission. Restoring the original values in the reply is not stated
Gateway for the OpenAI and Anthropic APIs	Yes. A drop-in base URL for the OpenAI and Anthropic APIs, so every request is redacted without a code change	A developer scan API with OpenAI among its tutorials. An OpenAI or Anthropic proxy is not stated
MCP server or Claude connector	Yes. An MCP server, plus a hosted connector that puts your ATS, CRM or helpdesk into Claude with records already tokenised	An MCP gateway, and Claude coverage through inference hooks and the Claude Compliance API
Document redaction before upload	Yes. Word, Excel, PowerPoint, PDF and text, plus scanned PDFs and images through OCR, with the layout kept	The API scans documents, spreadsheets and images. Redacting a file before upload is not stated
Self-hosting	Yes, on the Enterprise plan	Not stated. The pricing page mentions "in-tenant where deployment supports it"
Pricing	Public. 7-day free trial with no card, Starter $19 a month, Team $10 per seat a month (5 seat minimum)	Not public. Priced per user per year, with a proof of value instead of a self-serve trial
DLP beyond AI (Slack, email, laptops)	No. PII Shield covers AI tools only: chat, API, agents, connectors and documents	Yes. SaaS, endpoint and email as well as AI
POPIA (South Africa)	Yes. Built in South Africa, with free POPIA and GDPR DPIA and employee-notice templates	Not stated. Lists SOC 2, ISO 27001, HIPAA and GDPR

"Not stated" means we looked on Nightfall AI's own website and listings and could not find it. It does not mean Nightfall AI cannot do it. If something here is out of date, email [email protected] and we will correct it.

When Nightfall AI is the better choice

You want a single DLP platform that also watches Slack, Google Drive, email and laptops, and you have the budget for an enterprise contract.

When PII Shield is the better choice

Your team uses several AI tools. One extension covers ChatGPT, Claude, Gemini, Copilot and more, and one coverage setting drives every surface.
You need the answer to come back with the real names in it. PII Shield restores each value in the reply, so a drafted email or summary is ready to use.
You connect internal systems or code to AI. The API gateway, MCP server and Claude connector mask records before the model sees them.
You want to try it today. The price is on the website and the 7-day trial needs no card and no sales call.

See it on your own text

Paste a real email or CV into the free PII checker. It runs in your browser, sends nothing anywhere, and shows exactly what an AI model would see.

Sources

Every Nightfall AI fact above comes from Nightfall AI's own pages, checked on 7 November 2026:

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