Did YouTube just add live co-streaming?
The Twitch Killer Feature
YouTube launched "live co-reactions" in 2026, allowing creators to live-react to streams from other channels directly from mobile devices.
The New Live Features
Private rehearsal mode: Test your setup in private, then go public with one click.
Dual orientation: Broadcast horizontal and vertical simultaneously to reach wider audiences.
Mobile co-streaming: React to other creators' streams in real-time from your phone.
Why This Matters
Over 30% of YouTube viewers tune into live streams daily. These features directly compete with Twitch's core functionality. Combined with YouTube's superior monetization (Shorts rev share, shopping integrations, fan funding), many Twitch creators are considering the switch to YouTube in 2026.