How do their growth rates compare?

Originality.ai has a month-over-month growth rate of +2.8%; Truth Keeper has —.

How does pricing compare?

Originality.ai: Paid. Free tier with a one-time 10K-word (100 credit) allowance and no subscription. Pro is about $14.95/month monthly or $12.95/month billed yearly for 200K words per month, and Enterprise is about $179/month monthly or $136.58/month yearly for 1.5M words per month. Additional credits can be purchased; 1 credit equals 100 words. Truth Keeper: Free. Free to install from the Chrome Web Store; no paid tiers are advertised.

What are alternatives to Originality.ai and Truth Keeper?

Other tools in related categories include ZeroGPT, GPTZero, Scribbr, Undetectable AI, Copyleaks.

Originality.ai vs Truth Keeper — Traffic (2.05M vs 0), Pricing & Verdict

Open AI Tools

Originality.ai vs Truth Keeper — Traffic (2.05M vs 0), Pricing & Verdict | Open AI Tools

Side-by-Side Traffic & Specification Matrix

Dimension / Metric	Originality.ai	Truth Keeper
Official Domain	originality.ai	chromewebstore.google.com
Pricing Model	Paid	Free
Monthly Visits	2.05M (2,049,639)	0 (0)
MoM Traffic Delta	+55.72K (+2.8%)	0 (—)
Primary Market & Share	🇺🇸 United States (38.4%)	🌐 Global (—)
Direct Visits / mo	890.71K	0
User Rating	4	3.1
Supported Platforms	Website	Browser Extension

Originality.ai

AI detector, plagiarism and content-quality checks in one scan

AI detection with sentence highlights

Classifies text as AI, original or mixed and pinpoints which sentences most influenced the score, so reviewers know exactly where to look.

Plagiarism and content-quality checks in one pass

Runs plagiarism matching, readability scoring, grammar and spelling fixes, guideline checks and fact/hallucination screening from the same scan.

Bulk scan, files and full-site scanning

Upload DOCX, PDF or DOC files, paste text, scan a URL, or queue large batches of documents to process at scale.

Extensions, API and MCP integration

Check content inside Chrome and Google Docs, or wire detection into your own apps through the REST API and MCP server.

Strengths & Pros

+Single scan returns AI, plagiarism, readability, grammar and fact checks together
+Sentence-level highlights and Writing Replay make results easy to defend
+Bulk scan, API, extensions and team roles suit agencies and enterprises
+Free trial credits let you test accuracy before paying