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Check if a file was made with Claude

Anthropic launched a browser-based tool that detects whether a file was created or processed with Claude by reading embedded C2PA content credentials—cryptographically signed metadata attached to supported file types. The tool operates locally without uploading files and currently identifies only image/video/audio formats, not text, which uses a separate Detection API in private preview.

Background

AI-generated content detection has become a growing concern as large language models and multimodal AI tools produce increasingly realistic images, text, and media. C2PA is an open industry standard for content provenance, adopted by major tech and media companies to combat misinformation.

Source
Lobsters
Published
Sep 3, 2026 at 03:23 AM
Score
5.0 / 10