One YouTube livestream can now reach several creator audiences at once.
The platform is expanding Watch With, letting eligible mobile creators react live alongside other creators' streams.
Creators in the test group see a "React live" button in the Share panel on qualifying streams.
Their camera feed appears with the source video in a vertical livestream.
Reacting creators can earn revenue from the stream, while the original creator keeps revenue from the source broadcast.
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YouTube opts eligible livestreams into reactions by default, so source creators have to switch the setting off before going live.
The platform also attributes concurrent viewers, public views, and watch time from reactions back to the original content.
This gives one live broadcast a second distribution layer, as content creators supply their own audiences and commentary around the original stream.
Watch With Gives Live Content More Distribution
YouTube first tested Watch With around NFL coverage before expanding the concept to other sports and live events.
The platform described the feature as a way for creators to provide live commentary and real-time reactions.
This format now lets eligible creators react to other creators who are live on YouTube.
YouTube says the feature is part of its work to improve live discovery and growth.
"Building on a successful pilot, we're expanding the ability to react live to content on YouTube," the company said in a 2025 blog post.
"[This] allows anyone to start a vertical livestream on mobile and react to other live events, or even other creators, who are currently live."
The economics also give creators a reason to participate.
Reacting creators can monetize their broadcasts, while source creators retain their own stream revenue.
The expansion also follows YouTube's July 2025 monetization update, which renamed the repetitious content policy to inauthentic AI content.
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The rule targets mass-produced and templated uploads, the kind that clear the old bar on a technicality.
YouTube kept its separate reused content policy unchanged, so commentary, clips, and reaction videos stay eligible.
Watch With gives creators a native way to add original commentary on top of live content that someone else is producing.
69 Million Creators Make Audience Quality the Deciding Factor
Media Mister counts roughly 69 million active YouTube creators worldwide in 2026, out of more than 115 million total channels.
CreatorDB tracked 2.15 million channels with at least 1,000 subscribers in June 2026, of which only 76,736 had ever crossed 1 million.
Few creators can move a live broadcast on reach alone, and the engagement data says the big ones are not the safest pick anyway.
Median engagement was 3.2% for channels with 10,000 to 100,000 subscribers, against 2.5% for channels above 1 million.
And mid-size channels were about 1.5 times more likely to hold engagement above 5%.
Watch With gives YouTube live supply from those mid-size creators at no licensing cost, which is cheaper than buying another NFL game.
The numbers point to three considerations for brands and creators:
- Audience fit can matter more than subscriber count. Teams should assess engagement and audience makeup to find creators who can generate active viewing.
- Creator choice determines how far a live event can travel. Teams should select reaction partners with distinct audiences to reach different communities.
- Audiences remain highly concentrated. Marketers should plan reaction coverage across complementary creators to reduce dependence on one audience.
Brands should judge creators on engagement depth before adding live reactions to a brand strategy.
Our Take: Should Reactions Enter the Media Plan?
A reaction stream can split attention when the personality adds little context or entertainment value.
We think that reactions still belong in the media plan as a companion buy alongside the main live placement.
YouTube already tested several creator-led formats around major live events.
Trevor Noah's World Cup watch party ran on his own channel across more than 25 matches this summer, with Klarna, Airbnb, and Keurig among the sponsors.
Sponsors paid to sit inside the commentary while the match itself stayed free.
Watch With hands the same setup to any creator on any stream.
Reaction inventory becomes the next line item that brands price into influencer partnerships.
Companies developing creator-led campaigns can explore these top agencies in the DesignRush directory.
