Views on sponsored videos on YouTube have risen 28% year-on-year, and the number of sponsored videos has grown by 54% year-on-year in the first half of 2025, according to a report from Tubefilter. What’s more, ad spend through creator channels has been steadily rising and is even set to outperform traditional media in some cases.
Buoyed by these signals, Agentio, a startup that connects brands with YouTube creators for sponsored videos, has raised its third funding round of $40 million in as many years. The Series B round is led by…

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