GPTZero AI Detection Model 3.7
#2 in AI Detection & Authenticitygptzero · v3.7 · seit August 2025 · 28× · zuletzt 30. Juni 2026
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Momentum
GPTZero AI Detection Model 3.7b is an AI text detection model released in August 2025 by GPTZero (founded by Edward Tian at Princeton University). It is exclusively a text-based detection system built on an end-to-end deep learning pipeline with seven internal components, including perplexity and burstiness analysis, a sentence-level classifier, and a Paraphraser Shield. The model detects AI-generated text from models such as GPT-4.1, GPT-5 (without explicit training), Claude Sonnet 4, Gemini 2.5, o3, and other LLMs. In June 2026, GPTZero was acquired by Superhuman (Grammarly) for $88 million.
Momentum trend
04.04.03.07.
Features
| Deployment (Self-Hosted/Cloud) | Cloud service (SaaS), no self-hosting; SOC 2 compliant |
| Platform | Web app (gptzero.me), Chrome extension, REST API |
| Price | Essential $14.99/month, Premium $23.99/month, Professional $45.99/month (prices for web app/account, not model-specific) |
| Protocol Compatibility | REST API with JSON response (document_classification, class_probabilities, confidence_category, highlight_sentence_for_ai fields) |
| Release Date | Summer/August 2025 (model 3.7b), in time for the 2025/2026 school year |
| Supported Models/Providers | ChatGPT (GPT-3, GPT-4, GPT-4.1, GPT-5), o3, Google Gemini (incl. 2.5), LLaMA, Claude (incl. Sonnet 4), DeepSeek |
