Google opens SynthID Detector globally for AI watermark checks

Google announced on October 7, 2026, that SynthID Detector was available globally in English, expanding access beyond media professionals. The tool checks images, video and audio for AI watermarks from Google and partners including OpenAI, NVIDIA and Kakao; Google says Apple support is coming. One post cautions that a missing watermark does not prove a file is human-made, while detection does not verify whether events shown in a video are real.