TextSight.ai

TextSight.ai is an AI tool. TextSight.ai combines a sentence-level AI detector, a 0 to 100 Humanization Score and an AI Humanizer in one workflow, so flagged passages can be rewritten and rescanned without switching tools. Free tier without signup, paid plans with larger word allowances, tone options and API access.

TextSight.ai pairs an AI detector with a humanizer so you can find AI-sounding passages, rewrite them, and rescan the result without moving between tools. Paste text or upload a Word, PDF, .txt or .md file, and the scanner returns an AI probability, a Humanization Score on a 0 to 100 scale, and a colour-coded flag on each individual sentence that reads as machine-written. Instead of one verdict for the whole document, you get a map of what to fix. From there the flagged sentences can be sent to the built-in AI Humanizer, which rewrites them in one of five tones (Natural, Professional, Friendly, Academic, Engaging) while aiming to preserve meaning and facts. Each rewrite is reviewable before it is applied, so you can accept suggestions selectively rather than regenerating an entire draft. A recheck runs in the same view and shows the before and after scores side by side, which is the practical difference from stacking a separate detector and a separate paraphraser. The tool is aimed at students checking essays, writers and bloggers smoothing robotic phrasing, SEO and marketing teams reviewing AI-assisted copy for brand voice, and educators who want sentence-level evidence rather than a single number. A free Chrome extension applies the same scan to selected text on any page, including email threads and shared docs, and the extension shares one quota with the web app. TextSight publishes its own testing rather than third-party validation. It ran 1,180 human-written papers from 2018 (predating GPT-3) through the detector and reported a 5.85% false positive rate with a 95% confidence interval of 4.65 to 7.34. The company states accuracy of roughly 88 to 92% on long-form English over 300 words and 70 to 78% on text under 100 words, and it frames any score as one signal rather than proof. Competitors such as GPTZero, Originality.ai, Turnitin and Undetectable AI are addressed on dedicated comparison pages.