QuillBot started as a paraphrasing & writing tool. Over time it added many extras. One of those is the AI Content Detector.
It lets you check whether a piece of writing seems machine-generated or human. It pairs with paraphrasing, grammar checking, summarizing, and more.
QuillBot claims millions of users globally, and its writing tools are used in many languages and fields.
How the AI Detector Works
You paste text (or upload) and the detector scans for patterns typical of AI. It looks at probability, repetition, fluency, and unnatural syntax. It gives you a verdict: likely AI, likely human, or in between.
It handles writing in many styles academic, casual, creative. The goal is to detect subtle AI traits while letting normal human writing pass.
Pricing & Word Limits (in Paragraph Form)
QuillBot offers a free plan where you can use many tools with limits. For example, paraphrasing is capped at 125 words in free mode. The AI Detector in free mode also has limits (word count, detection depth)
Paid plans open up full access. The monthly plan costs $19.95/month. The annual plan is billed $99.95 (≈ $8.33/month) The semiannual plan is ~$13.31/month when paid quarterly.
There’s also a Team plan: multiple seats at a lower per-user cost. For 5+ users, it can be ~$7.50 per user per month (billed annually)
Pros
Easy to use for non-tech folks
Integrated with other writing tools (paraphraser, grammar, summarizer)
Free version lets you test before paying
Fast detection for moderate text lengths
Team plan helps groups or classrooms
Cons
Free limits can frustrate heavy users
May misclassify human writing that is very polished or short
Not perfect at handling mixed human + AI text
Big quotas require paying premium
The detector depth is not fully transparent (black box behaviour)
Traffic & Ranking Signals
QuillBot’s site sees tens of millions of visits monthly. In recent data, its organic search visits are huge. Ahrefs reports it got ~45.85 million visits in one recent month.
It ranks top for keywords like “ai detector,” “paraphrase tool,” “grammar checker,” and others.
In terms of competition, sites that rank similarly use terms like “AI content detection,” “machine writing scanner,” “authentic writing check,” and “AI checker.” So you want to sprinkle those phrases (naturally) in your article too.
Visitors & Social Presence
Monthly visitors: ~38 million (according to Ahrefs data)
Social media followers: I could not locate one combined number reliably, but the brand is active on LinkedIn, Twitter, etc.
User community: QuillBot states it has ~56 million users (monthly active writers) across tools.
Use Cases in Real Life
A student wants to verify if their essay draft was AI generated
A blogger checks guest article content before publishing
An editor wants to spot machine-written sections in submissions
A writer uses it to ensure their writing feels “real”
Tips to Make Your Writing Pass Detectors
Mix sentence lengths (short + medium)
Add flairs, minor errors, colloquial phrasing
Use personal stories or opinions
Avoid overly formulaic structures
Occasionally break “perfect” grammar (but gently)
These small touches help shift the feel from “machine like” to human.
Final Thoughts
QuillBot’s AI Content Detector is a neat tool if you already use its writing toolkit. It gives you a layer of verification. But don’t let it override human judgment. Use it as a safety net don’t depend on it alone.
