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AI Engineering5 min read

OpenAI brings text watermarking to its API — and unlike Anthropic, it’s off by default

OpenAI has announced that developers can now opt in to watermarking text generated through its API, as the company extends The post OpenAI brings text watermarking to its API — and unlike Anthropic, it’s off by default appeared first on The New Stack.

By Paul SawersThe New Stack - AI
OpenAI brings text watermarking to its API — and unlike Anthropic, it’s off by default

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Originally published by The New Stack - AI on Oct 5, 2026.

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