Related Products
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About
Lenz is an audit-grade fact-checking API for AI-drafted text, built for teams that need to check factual claims before customers or clients see them. It reads a draft, memo, model answer, or page of copy, extracts the factual statements that can be checked against independent public sources, and returns a result for each. Its workflow follows four API primitives: extract verifiable claims, assess them in bulk with a fast multi-model verdict, escalate uncertain statements to a full verification, and ask follow-up questions grounded in the verification. Full verification runs through a structured five-stage pipeline of framing, research, debate, panel review, and conclusion. Lenz searches public sources, scores evidence for authority, relevance, and recency, has models from multiple vendors argue both sides of a claim, and returns a verdict, confidence score, cited sources, and reasoning trace that users can audit.
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About
Every proposal, deck or report you send can win or lose a deal, and PDFTrackr tells you how it landed. Share it as a secure tracked link and see who opened it, which pages they read and where they stopped, with bots and email scanners filtered out so the numbers are real.
The part worth paying for is Signals: who came back, who is genuinely engaged and who is worth a call now, plus a per-recipient verdict on whether a prospect read it and an alert the moment they open it or return.
You also decide who can open a document at all: allow lists, block lists and a six-digit email verification code, alongside password, expiry, download control and watermarking.
Free is complete: 500MB, full page-by-page analytics, 12-month history, virus scanning, no card. Pro ($9/month or $84/year) adds Signals, alerts, verdicts, CSV export, bulk links, folders and versioning, and every new account runs on Pro free for 14 days.
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Platforms Supported
Windows
Mac
Linux
Cloud
On-Premises
iPhone
iPad
Android
Chromebook
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Platforms Supported
Windows
Mac
Linux
Cloud
On-Premises
iPhone
iPad
Android
Chromebook
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Audience
AI product teams, developers, editors, and researchers wanting to verify factual claims in AI- or human-written text against independent public sources before publication or delivery
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Audience
Sales and business development teams, consultants, agencies, and founders raising on a pitch deck: professionals who send proposals, quotes, decks, and reports and need to know who actually read them and who is worth a follow-up.
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Support
Phone Support
24/7 Live Support
Online
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Support
Phone Support
24/7 Live Support
Online
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API
Offers API
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API
Offers API
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Screenshots and Videos |
Screenshots and Videos |
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Pricing
$7.99 per month
Free Version
Free Trial
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Pricing
Free
Free: $0 - 500MB storage, 50 files, 50 share links, 50MB/file, full page-by-page analytics, 12-month history, no credit card. Pro: $9/month or $84/year - 10GB, 500 files, unlimited links, 250MB/file, 24-month history, Signals, per-recipient verdicts, open and return-visit alerts, Reading Reports, allow/block lists, verified viewer email, CSV export, bulk personalized links, watermarking, folders, versioning. Every new account includes 14 days of Pro free, no card; when it ends the account moves to the free plan instead of losing access.
Free Version
Free Trial
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Reviews/
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Reviews/
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Training
Documentation
Webinars
Live Online
In Person
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Training
Documentation
Webinars
Live Online
In Person
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Company InformationLenz
Founded: 2026
Bulgaria
lenz.io
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Company InformationPDFTrackr
Founded: 2025
Poland
pdftrackr.com
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Alternatives |
Alternatives |
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Categories |
Categories |
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PDF Features
Annotations
Convert to PDF
Digital Signature
Encryption
Merge / Append
PDF Reader
Watermarking
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Integrations
ChatGPT
Claude
Claude Code
Cursor
Model Context Protocol (MCP)
WhatsApp
Zapier
n8n
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Integrations
ChatGPT
Claude
Claude Code
Cursor
Model Context Protocol (MCP)
WhatsApp
Zapier
n8n
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