MainStory AI is a dynamic creative optimization platform that helps DSPs, connected TV and streaming platforms turn existing identity and behavioral signals into household-level video advertising. Rather than serving a few fixed ads or swapping elements within a template, it creates distinct storylines and photorealistic environments shaped around each household’s interests, intent and context.

Brands provide approved assets, messaging guardrails and narrative boundaries. MainStory AI uses these to generate creative variants while locking the master product asset, logo and geometry, helping maintain brand consistency across campaigns. The platform can produce thousands or millions of versions ahead of activation and deliver them through existing programmatic pipelines, without requiring customers to rebuild their DSP or delivery setup.

MainStory AI is designed to work with data platforms already hold and to operate within their consent frameworks. Its feedback loops can refine creative during a campaign, while measurement uses existing attribution and analytics tools. The company also offers 30-day live-inventory pilots, allowing platforms to compare household-level personalization with their current creative.