Meta's Threads is shrinking. They are now only 3.5x of CoSo user base.

"Despite a record-breaking start in its first weeks of launch, engagement with Meta's Threads app continues to plummet. According to Similarweb, engagement is down 79% from a high of 2.3 million active users in early July to 576,000 as of August 7th. The Guardian reports"

https://www.theguardian.com/technology/2023/aug/14/threads-app-slump-daily-active-users-twitter-competition