Originality.ai
Accurate AI detector for ChatGPT, GPT-5 and Gemini
Overview
Originality.ai started as an AI detector and has grown into a broader content integrity toolkit. It still leads with detection accuracy, claiming 97.8% accuracy across dozens of languages, but it now also checks plagiarism, grammar, readability and factual accuracy in the same scan. The Chrome extension is a nice addition for writers who want to prove a piece was actually typed by a human rather than pasted in from ChatGPT, since it captures the writing process itself.
The pricing model runs on credits, 1 credit per 100 words, which works fine for occasional checks but adds up fast if you're running full-site scans or bulk document checks regularly. Pro at under $13 a month gives 2,000 credits, enough for a moderate content operation, but agencies scanning thousands of pages will need Enterprise at $136.58 a month and its 15,000 credits. No AI detector, including this one, is 100% reliable, so treat results as a strong signal rather than absolute proof.
Key Features
AI Detection: Identifies AI-generated content across 30+ languages, covering ChatGPT, Claude, Gemini and other major models.
Plagiarism Detection: Checks submitted text against content already published across the internet.
Deep Scan: Explains why a piece of text reads as AI-written and suggests edits to fix it.
Content Quality Score: Evaluates readability and general writing standards.
Fact Checking: Flags factual claims worth double-checking before publishing.
Chrome Extension: Replays the writing process in real time to help prove human authorship.
Pricing
Starting price
$12.95/mo (billed annually)
Pro: $12.95/month billed annually ($14.95/month billed monthly). 2,000 monthly credits, 30-day scan history, Chrome extension, team management.
Enterprise: $136.58/month billed annually ($179/month billed monthly). 15,000 monthly credits, 365-day scan history, API access, dedicated Customer Success Manager.
Pay-As-You-Go: One-time credit purchases that expire after 2 years if unused.
Disclaimer: pricing may change, confirm on Originality.ai's own pricing page before buying.
Pros
Multiple Checks In One Tool: AI detection, plagiarism, grammar, readability and fact-checking in a single scan.
Affordable Entry: Pro plan starts under $13/month with a real feature set, not a stripped-down trial tier.
Team Features: Team management, custom tags and shareable reports built in even on Pro.
Chrome Extension: A genuinely useful way for writers to document their own human-written process.
Cons
AI Detection Isn't Perfect: Like all AI detectors, false positives and negatives happen, results shouldn't be treated as absolute proof.
Credits Burn Fast: Full-site scans and bulk checks eat through the credit allowance quickly.
Big Price Jump To Enterprise: Enterprise costs over 10x the Pro plan for the API access and priority support many teams actually need.
Extra Seats Cost More: Team seats are billed separately on top of the base plan.
What Makes It Unique
All-In-One Content Integrity Check: Originality.ai combines AI detection, plagiarism, fact-checking and readability into a single scan, instead of making you run separate tools for each.
Kay Score
8
/ 10
