Isgen AI detector

The free tier is per scan. The FAQ says "you may check for AI-generated content using the free AI detector provided by Isgen.ai", the box is capped at 5,000 characters, and the pricing FAQ names a "Freemium Plan" that cannot buy additional words (isgen.ai/pricing, read 9 November 2026). No free word allowance or period is stated, so the card records no free words per month and Isgen sits in the second table of the free tiers ranking.

The pricing page shows a Monthly and "Yearly (5 Months Free)" toggle with a USD currency switch; the figures in the page source are the annual-billing figures, and the monthly toggle's prices are not in the server HTML, so the card records the annual figures only, read 9 November 2026.

The pricing FAQ adds that "Words do not roll over to the next month" and that refunds are considered where "your account's usage falls below 15% of the maximum allowed under your chosen plan" (read 9 November 2026). Isgen's API price per 1,000 words is not published, so the card is tabled apart on the API pricing ranking.

Retention is stated three ways. The home page FAQ answers "Do you store my data?" with "No, we do not store any data. Input history is maintained for users with a paid plan, but it can be deleted at any time" (isgen.ai, read 9 November 2026). The Bulk Scan page says documents "are stored safely in an encrypted database", "are never used to train our models and are deleted from our servers as soon as they are processed" (read 9 November 2026). The pricing page sets "15 days Document History" on Academic and "30 days Document History" on Ultimate and Writing. The privacy policy, last updated 10 February 2024, keeps Personal Data "only for as long as is necessary" and states no period for submitted text (isgen.ai/privacy-policy, read 9 November 2026). The card records no period: the FAQ's "we do not store any data" and the pricing page's Document History periods conflict and govern different things, the reading the index gave Sensity and Pindrop, so both are quoted and the data retention ranking lists Isgen in its second table rather than at 30 days (ruling of 10 November 2026).

Isgen states one accuracy figure and one comparison. The FAQ reads: "isgen boasts an accuracy of 96.4% on a benchmark where the most used AI Detector tool in the market has an accuracy of 81.22%" (isgen.ai, read 9 November 2026). The benchmark, its size, its date and the compared tool are not named. The false positive claim is a phrase, not a rate: "Our AI Detection tool provides a false positive ratio of nearly 0%, so you can safely rely on the model results." The page also calls Isgen "the best AI detector in the market that works for all languages" and says it "delivers the highest accuracy in the market for English AI content detection". No base is stated for any of these, so the card records no false positive rate and Isgen appears in the sub-1% false positive claims question as a claim with no study beside it. With no study record, there is nothing for the claim versus evidence gap to compute.

The FAQ's caveat is addressed to teachers: "AI Detectors, including Isgen, are not 100% accurate. There is a possibility of false positives", followed by advice to "allow them to justify why the piece was not generated by AI" and a note that a student who used AI to structure a topic "could still be flagged as AI" (read 9 November 2026). Isgen makes no claim to detect paraphrased or humanized text. The same suite sells an AI Humanizer, and the AI Editor section promises to "humanize anything that reads robotic" while the detector FAQ says its analysis helps writers "future-proof their writing against any AI Text Detector".