Does OpenAI's Watermarking Degrade Model Quality? Reddit Debates the KLD Cost
ResearchCrafty1804 · reddit · 2026-10-06
To comply with EU rules requiring identification of AI-generated text and images, OpenAI has begun watermarking model outputs; Anthropic already applies similar watermarking worldwide. The technique embeds a statistical signal by not always picking the most probable next token.
The post argues this introduces KLD > 0 — negligible for short outputs but compounding noticeably across multi-turn tasks, degrading quality. The thread debates whether watermarking necessarily trades off output quality and whether lossless implementations are possible.
Related event: OpenAI Adds Text Watermarks for EU Compliance, Sparking Quality Concerns(2 posts)→
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