Meta-owned Threads started November with 5 times the daily app users of Bluesky. That number is now down to just 1.5.

On Thursday, Mosseri announced a major change to Threads' algorithm to compete with the likes of Bluesky. The social media platform is "rebalancing ranking to prioritize content from people you follow, which will mean less recommended content from accounts you don't follow and more posts from the accounts you do starting today."

While both platforms share some DNA with X (formerly Twitter), they've taken distinctly different paths in their evolution. Threads builds upon Instagram's established infrastructure and community, while Bluesky embraces an open-source, decentralized approach through its AT (Authenticated Transfer) Protocol.

Bluesky might be on the rise, but Instagram and Threads boss Adam Mosseri wants you to know that Threads is still much bigger. In a post on Thursday, Mosseri said that Threads has gotten “more than 15 million signups in November alone,