На февраль 2023 года мне удалось найти и опробовать следующие инструменты:

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https://hivemoderation.com/ai-generated-content-detection

GPT-ZERO https://gptzero.me/

OpenAI GPT2 Output Detector

https://openai-openai-detector.hf.space/

Hello-SimpleAI ChatGPT Detector

https://hello-simpleai-chatgpt-detector-ling.hf.space/

Contentatscale AI Content Detector

https://contentatscale.ai/ai-content-detector/

Writers AI Content Detector

https://writer.com/ai-content-detector/

AI Content Detector

https://crossplag.com/ai-content-detector/

AI Content Detectorbeta by Copyleaks

https://copyleaks.com/features/ai-content-detector

Corrector App - AI Content Detector

https://corrector.app/ai-content-detector/

Originality.ai

Originality.ai did a great job on all three prompts, accurately detecting them as AI-written.

• Educator considerations for ChatGPT (https://platform.openai.com/docs/chatgpt-education)
• AI Text Classifier (https://platform.openai.com/ai-text-classifier)
• Hugging Face (https://huggingface.co/)
• GPT-2 Output Detector Demo (https://huggingface.co/openai-detector)
• Details on GPT-2 Output Detector (https://huggingface.co/roberta-base-openai-detector)
• https://www.newscientist.com/article/2350655-openai-is-developing-a-watermark-to-identify-work-from-its-gpt-text-ai/
• GptZeroX: http://gptzero.me/
• OpenAI chatGPT (https://chat.openai.com/chat)
• DetectGPT: Zero-Shot Machine-Generated Text Detection using Probability Curvature (https://ericmitchell.ai/detectgpt/)
• Detecting GPT-2 Generations with DetectGPT (https://detectgpt.ericmitchell.ai/)