Prolific vs Roundtable（Proof of Human）

免费 / 开源ZeroGPT is an AI content detection platform with a text AI detector, AI image and video detectors, AI humanizer, plagiarism checker, and a set of writing tools including paraphraser, summarizer, grammar checker, translator, and citation helper.

免费 / 开源面向学校与编辑的 AI 检测与写作验证

免费 / 开源以隐私为先的网络机器人检测与欺诈防护平台

精准研究受众搭配 AI 校验的数据质量

免费 / 开源Undetectable AI is a web platform that scans text for AI fingerprints and rewrites flagged passages so they read like natural human writing. It bundles an AI detector, an AI humanizer and a growing set of media authenticity tools in a single dashboard.

免费 / 开源支持句子级洞察的多语言 AI 检测工具

专项更强前沿 AI 训练所用的环境，以及负责重复性工作的智能体

提供企业级的 数据标注与 AI 对齐团队，但较少针对学术研究招募提供自助服务。

免费 / 开源免费 AI 检测器，提供逐句分析与文本人性化改写

免费 / 开源不只给分数，还标出证据的 AI 检测器

免费 / 开源两分钟，一个陌生人，一个问题：真人还是 AI？

专项更强SuperAnnotate is an AI data platform that combines a collaborative multimodal annotation editor, an expert data-operations team, and the orchestration layer needed to move curated datasets into training, evaluation, and production pipelines. It is aimed at teams building computer vision, NLP, audio, and generative AI systems who need reliable, high-quality ground truth at scale.