Unverified50% confidenceFactExact time
OpenAI internally developed a text watermarking system in 2022 but shelved its release due to concerns about unfair impact on non-native English speakers, and did not reconsider deployment until 2024.
1
Sources
50%
Confidence
Long-term
Relevance
8/16/2026
First Seen
Sources
Claude隐形水印争议：AI输出内容可被溯源追踪
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