Most people search this after hitting the free ceiling of 3 AI scans a month, or after looking at the renewal price. The answer depends on one question: do you need a detector, a rewriting tool, or a report someone else will accept? AI Detector Pro sells all three in one bundle, and that bundle is what you are really paying for.
Paste some text or load the example to estimate AI likelihood.
Working from the vendor's own pages, checked 16 August 2026:
The product does two jobs. It scans text for AI-generated writing, and it rewrites text, described on aidetector.pro as finding "detectable signs of AI and remove[s] them." The homepage lists a pinpoint editor, tone analysis, a scan-as-you-type beta, Word and Google Docs plugins, data export, and branded and white-label reports on the enterprise track.
Pricing on aidetector.pro/pricing, at the time of checking, showed a promotional 50 percent discount code applied to every paid tier:
| Plan | Monthly (listed) | Yearly (listed) | Scans | Humanizations |
|---|---|---|---|---|
| Free | $0 | $0 | 3 AI scans / month | 0 / month |
| Basic | "$27.98 $13.99 with 50% off" | "$279.98 $139.99 with 50% off" | 103 AI scans / month | Unlimited |
| Unlimited | "$49.98 $24.99 with 50% off" | "$499.98 $249.99 with 50% off" | Unlimited | Unlimited |
Two things the pricing page does not publish: a word limit per scan, and a price for API access. The FAQ states that the API costs extra and requires a plan that includes it, but no figure is given. If per-scan length matters to your work, ask before you subscribe.
Languages listed on the homepage: English, Spanish, French, Arabic, German, Portuguese and Korean.
On accuracy, the site declines to give a number, stating instead that "Due to the nature of AI models and the inherent randomness of the algorithms, no tool can be 100% accurate." That is more restrained than most of this category, and worth noting in a market where competing free tools advertise 99.9 percent.
Three reasons come up repeatedly, and only one of them is really about the product.
The free tier is a demo, not a tier. Three scans a month is enough to try the tool once and decide. It is not enough to check a week of drafts, so anyone who uses it seriously converts to paid immediately or leaves.
You only wanted half the bundle. The Basic plan pairs 103 scans with unlimited rewriting. If you are a teacher, an editor or a compliance reviewer, you will never touch the rewriting half, and you are still paying for it. That is the single most common reason to look elsewhere.
Undiscounted pricing is uncertain. The listed prices carry a stacked 50 percent discount code. Whether renewal happens at the discounted or the struck-through figure is not stated on the pricing page. Read the checkout terms rather than the headline.
If any of these describe you, changing tools will cost you more than it saves.
You need detection and rewriting in one editor. Most tools do one or the other well and bolt on the second as an afterthought. AI Detector Pro is built as a single loop: scan, see the flagged spans in the pinpoint editor, rewrite, rescan. If that loop is your daily workflow, splitting it across two vendors is a real downgrade in speed.
You work in Word or Google Docs and will not leave. The published Word and Google Docs plugins matter more than most feature lists admit. A tool that lives where you already write gets used. A browser tab you have to remember does not.
You need branded or white-label reports and the enterprise path. White-label output is genuinely rare below enterprise pricing. If you resell editing or content services and need the report to carry your client's logo rather than a vendor's, this is a short list and AI Detector Pro is on it.
You write in Arabic or Korean. Very few detectors publish support for either. If your work is in those languages, most of the alternatives below simply do not serve you, whatever their pricing looks like.
You want a vendor that does not advertise a fake accuracy number. Refusing to publish a percentage is a signal of some integrity in a category full of invented ones.
The field splits into three groups. Comparing across groups is where people waste money.
SmallSEOTools and PrePostSEO both run AI detectors inside large free tool collections. SmallSEOTools' AI Content Detector page stated "Up to 2000 Words will be used", no registration, and no charge (smallseotools.com/ai-content-detector, checked 16 August 2026). PrePostSEO's AI Content Detector page did not publish a word limit in its visible copy; the page's own script sets a MAX_WORD_LIMIT of 2000 (prepostseo.com/ai-content-detector, checked 16 August 2026). Both pages load Google's publisher ad tag.
These are fine for a quick sanity check on a paragraph. They give you no record of what you checked, no export, and nothing you can hand to a client or a committee.
TraceGPT, from PlagiarismCheck.org, targets schools and universities. Its vendor page advertises LMS integrations for Canvas, Moodle, Google Classroom, Schoology, Brightspace, Blackboard and Populi, a Google Docs add-on, a Chrome extension, an API, and combined plagiarism plus AI scanning (plagiarismcheck.org/ai-detector, checked 16 August 2026). Prices there "start at $2.08/month". If you are buying for an institution rather than yourself, this group is your group, not the paid consumer tools.
This is where AI Detector Pro sits, and where TextSight sits.
TextSight is a detector with team and reporting features, not a rewrite-first product. Pricing is published without a countdown discount: Starter $9.99 a month or $7.49 billed annually, Pro $19.99 or $14.99, Business $39.99 or $29.99, Enterprise $79.99 or $59.99. Annual saves 25 percent.
The paste box above runs before any signup. Anonymous use gives 3 checks a day, pooled across the AI Detector and the Document Detector, capped at 1,000 words. A free account raises that to 60 checks a day at 5,000 words. Starter gives 200 a day, Pro and above are unlimited. The minimum input is 25 words. Scores band as under 30 "likely human-written", 30 to 69 "mixed signals", 70 and above "likely AI-generated".
Beyond the box: sentence-level analysis and PDF export from Starter, Chrome extension and REST API from Pro, file upload, URL scan and bulk scan, plus teams and branded reports from Business.
Now the part that should decide it for some readers. TextSight's detector is English-only. It is an ensemble of DeBERTa, RoBERTa and ELECTRA, and it carries a known false-positive bias against writers who learned English as a second language. Against AI Detector Pro's published seven-language list, that is a straight loss. If you assess multilingual work, or you assess students and staff writing in English as a second language, weigh that heavily before switching.
If you rewrite as much as you scan, stay where you are. If you scan far more than you rewrite, you are subsidising a feature you do not use, and a detection-first tool at a published, undiscounted price is the cheaper shape. If you only need to check a paragraph now and then, use a free tool and spend nothing. If you are buying for a school, look at the institutional vendors instead of any tool on this page.
The deeper head-to-head: feature table, where GPTZero wins, where TextSight wins, and migration steps.
Read the comparePerplexity, burstiness, and transformer scoring explained, so you can read any detector's verdict critically.
Read the guideWhy detectors over-flag ESL and formal writing, and how sentence-level evidence helps you defend real work.
Read the guideThe full ranking with detection approach, pricing, and use-case fit side by side.
See the rankingStart with TextSight's free tier. No card, no signup, no commitment. Your first scan in about six seconds, with the evidence shown line by line.
Honest comparisons vs other tools.