Sapling AI Content Detector

Sapling uses probabilistic models to analyze text, rather than determining authorship. The page displays scores for entire paragraphs and individual sentences, allowing users to review the revised text or use a browser extension to analyze selected web page content.

PDF and Word files are first extracted into text before being scanned, while images require OCR beforehand. Web page inspection, report sharing, the batch document panel, and the API serve as separate workflow entry points; the specific limits are subject to confirmation based on the plan and the API specifications.

The official website notes that short, generic, or essay-like text is more prone to misclassification and clarifies that language support is uneven. The listed multilingual models do not include dedicated Chinese-language support; other languages are scored using the English model, resulting in lower reliability. Accuracy should be interpreted in the context of the specific version, dataset, and threshold.

Editing, research, and teams that require text proofreading

2026-10-25 Official page: Free checks are limited to the first 2,000 characters; Pro and Enterprise plans allow up to 100,000 characters. For longer texts, segmenting or verifying API conditions is required. Scanned images must first undergo OCR, and report links expire after 3 days. The current subscription amount has not been verified; no fixed price is provided.