GPT-Live audio gains SynthID watermarking and verification API

Supported GPT-Live audio generated through ChatGPT Voice and the API now includes SynthID watermarking. OpenAI’s public verification tool can detect supported provenance signals, and developers can access verification by API. The signal complements Content Credentials; neither method is infallible after transcoding or platform processing.

Impact: Contact centres, media platforms and regulated services can add automated provenance checks, but should combine them with access logs, consent records and human review.