Detecto vs GPTKit

Detecto is a web service that estimates AI-generation likelihood for text, images, video, and audio, returning calibrated probabilities, supporting evidence, and reviewer reports. Text reports can highlight sentences and show perplexity, burstiness, and a confidence band. Image reports include generation likelihood, a region heatmap, surface-artifact flags, and metadata-integrity checks. Reviewers can add notes, save reports, export PDFs, and share controlled links. Scans and reports are private to the account by default; ephemeral mode allows scanning without storing content or reports. Detecto says submissions are never used to train its detection models. The service is aimed at editors, educators, newsroom verification desks, PR teams, agencies, publishers, and universities. A free tier includes starter credits and full report fidelity without a card. Student costs $6.99 a month billed $83.88/yr; Pro costs $19.99 a month billed $239.88/yr; Max costs $59.90 a month billed $718.80/yr. Scores are probabilistic, not proof, and short or translated text can affect detection.

GPTKit analyzes submitted text and classifies it as human-written or ChatGPT-generated. It is available through a web interface and an API, with English currently supported. The maker says the detector combines six AI-based methods, was trained on 1 million datasets, and produces authenticity and reality reports. GPTKit reports approximately 93% accuracy based on testing 100K+ human and ChatGPT responses. The first 2048 characters of every request are free, including for guests; the Free Plan allows up to five requests per minute. Unlimited (Personal) costs $5 a month and supports two team members. Unlimited (Team) costs $10 a month, supports eight members, and includes API access. Unlimited (Institution) costs $20 a month, supports 20 members, and includes API access. Team credits can be shared. GPTKit says submitted text is temporarily stored and removed after detection; its policy says absolute security cannot be guaranteed.