Productivity AutomationVerified
Reviewed and published by trentmaziarz, May 11, 2026. Discovered and drafted by our automated research pipeline.
Warner Bros. Discovery deployed an AI captioning tool called 'Caption AI,' built on Google Cloud's Vertex AI platform, to automatically generate closed captions for content on its Max streaming service, starting with unscripted programming in the United States in September 2024. Human reviewers remain in the loop for quality assurance.
Details
The Caption AI system takes video content as input and automatically converts it to text captions, reducing caption file creation time by up to 80% and cutting captioning costs by up to 50% compared to the prior manual process. WBD confirmed that captioning was previously a labor-intensive, manual process, and that human oversight is retained for accuracy checks. The system is built on Google Cloud's Vertex AI generative AI platform.
Products affected
MaxCNNdiscovery+
Sources & Evidence
News Article
Cite this record
Trace Foundation. (2026). Warner Bros. Discovery: Warner Bros. Discovery deployed an AI captioning tool called 'Caption AI,' built on Google Cloud's Vertex AI platform, to automatically generate closed captions for content on its Max streaming service, starting with unscripted programming in the United States in September 2024. Human reviewers remain in the loop for quality assurance (data as of 2026-05-11) [Data set record]. AI Trace. https://www.aitrace.org/r/practice/0eedb8b6-ac51-485a-853c-6968db6c74be. Accessed October 5, 2026.
- Stable link
- https://www.aitrace.org/r/practice/0eedb8b6-ac51-485a-853c-6968db6c74be
- Data as of
- May 11, 2026
- Last verified
- Not recorded
Other practices by Warner Bros. Discovery
ProductivityWBD Sports Europe deployed Cycling Central Intelligence (CCI), a generative AI platform built with Amazon Web Services, to help commentators and production teams instantly access rider profiles, race histories, and performance statistics during live UCI Mountain Bike World Series events. The platform launched in April 2025.Data AnalysisWarner Bros. Discovery uses AI to identify and optimize ad break placement within HBO content on Max, which historically lacked natural commercial breaks. CEO David Zaslav confirmed this practice publicly in May 2024.OtherWarner Bros. Discovery integrated KERV's AI technology into its Max ad platform in November 2024, launching two ad products: 'Shop with Max,' which identifies objects in on-screen content and pairs them with advertiser products via QR code, and 'Moments,' which uses audio and visual analysis to match ads to thematically relevant content segments.
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