TL;DR
6 min readBluesky's own blog put the network at over 1 million users on 12 September 2023, over 13 million on 24 October 2024, and over 43 million by the time of its 19 March 2026 Series B post. TechCrunch reported Bluesky passing 10 million users on 16 September 2024 after gaining roughly 3 million users in days once Brazil banned X, and Bluesky's own blog logged 2.6 million new users, over 85 percent of them Brazilian, in the days around that same event. Every figure below carries the name of the source that published it and the date it was published.
What do Bluesky statistics show about its user growth?
Every number in this roundup of Bluesky statistics comes from a named source and a specific date, and most of them come directly from posts on Bluesky's own blog. Read together, they trace one curve: a small invite-only network in 2023 that crossed 10 million users within a year of opening to the public, then kept multiplying past 40 million by 2025. Each entry below states which organization published the figure and when, so a claim here can be checked against its original post.
| Date | Metric | Source |
|---|---|---|
| 12 September 2023 | Over 1,000,000 users | Bluesky's own blog |
| 31 August 2024 | 500,000 new users in the previous two days | TechCrunch |
| 4 September 2024 | Grown by more than 2,600,000 users in a few days, over 85% Brazilian | Bluesky's own blog |
| 16 September 2024 | More than 10,000,000 users | TechCrunch |
| 24 October 2024 | Exceeds 13,000,000 users | Bluesky's own blog |
| 19 March 2026 | Over 43,000,000 global users | Bluesky's own blog |
How many users did Bluesky have at launch and its first million?
Bluesky's own blog stated on 12 September 2023 that the network had reached "over one million users," after running as an invite-only waitlist product through most of that year. The same post described a run rate of tens of thousands of new invite codes sent out weekly, with existing users also receiving codes to distribute, which is the mechanism that took the network from a few hundred people in February 2023, by the same post's account, to over a million seven months later. That growth ran entirely before Bluesky opened to public sign-up, which did not happen until February 2024.
What triggered Bluesky's biggest growth spike?
Brazil's Supreme Court ban on X, which took effect on 30 August 2024, triggered the sharpest growth spike in Bluesky's history, and TechCrunch reported that same week that Bluesky gained 500,000 new users in the previous two days alone. Bluesky's own blog, in a post dated 4 September 2024, put the same event at more than 2.6 million new users over a few days, with over 85 percent of them from Brazil, and TechCrunch's follow-up report on 16 September 2024 described Bluesky reaching 9 million users earlier that month before crossing 10 million, with more than 85 percent of the new signups again coming from Brazil. TechCrunch also reported that Bluesky reached the number one spot on Brazil's free iPhone app chart on 30 August 2024, ranking ahead of Meta's Threads at number two that day.
How many users does Bluesky have now?
Bluesky's own blog post announcing its Series B funding round, published 19 March 2026, stated the network has "grown from 13 million to over 43 million global users" since its October 2024 Series A announcement. That same post named a $100 million Series B round that closed in April 2025 as part of the growth story, and it put the underlying dataset, which Bluesky calls the Atmosphere, at about 20 billion public records, counting posts, likes, comments and other interactions.
What do Bluesky's own numbers say about posting and developer activity?
Bluesky's 19 March 2026 blog post reported that people use over 1,000 apps built on the AT Protocol every week, and that the ecosystem sees over 400,000 SDK downloads every month, both figures Bluesky attributes to activity on top of its open protocol rather than only its own app. The same post's figure of about 20 billion public records in the Atmosphere is the closest published measure of total posting volume, since Bluesky did not break that number down into posts against likes and other interaction types in the post itself. Bluesky's own October 2024 Series A announcement separately reported more than 1,000 independently run personal data servers and more than 50,000 custom feeds created by users, both signs of activity beyond the core app.
How fast did Bluesky grow between milestones?
Dividing Bluesky's own 24 October 2024 figure of 13 million users by its own 12 September 2023 figure of 1 million gives a thirteenfold increase over about thirteen months, using only the two numbers Bluesky itself published. Dividing the 19 March 2026 figure of over 43 million by that same 13 million figure gives roughly a 3.3 times increase over the seventeen months between the two posts, again using only Bluesky's own reported totals. Both calculations use the exact figures Bluesky's blog stated on those two dates; neither multiple is itself a number Bluesky published directly.
How does Bluesky's growth compare to Threads?
TechCrunch's 16 September 2024 report, the same one that put Bluesky at over 10 million users, stated that Meta's Threads had grown to over 200 million users by August 2024, a figure TechCrunch attributed to Meta. Comparing Bluesky's 10 million to Threads' 200 million on that same reporting date puts Bluesky at roughly one twentieth of Threads' user count at that point, using TechCrunch's own numbers for both platforms rather than mixing figures from different dates or different publishers.
Tracking a fast-moving user count is a narrower version of the same job as tracking what people say on the platform once they are on it. RedReplier monitors Bluesky alongside Reddit, X, Facebook and Hacker News in one place, and the query syntax for finding a specific conversation on Bluesky once you are inside it is covered in Bluesky search operators. The identifier that keeps a tracked account matching even after it changes its handle is explained in AT Protocol DIDs, and the exact limit each of the posts counted above had to fit inside is covered in the Bluesky character limit guide. A comparable sourced roundup for a different platform sits in Reddit statistics.
Frequently Asked Questions
How many users did Bluesky have when it first opened to the public?
Bluesky's own 12 September 2023 blog post reported over 1 million users while the network was still invite-only; public sign-up did not open until February 2024, so no directly comparable public-launch figure exists in the sources checked for this roundup.
What caused Bluesky's user count to jump so fast in 2024?
Brazil's Supreme Court ban on X, effective 30 August 2024, is the event both TechCrunch and Bluesky's own blog tie to the sharpest jump, with TechCrunch reporting 500,000 new users in two days and Bluesky's own blog reporting 2.6 million new users over a few days, more than 85 percent of them Brazilian.
What is Bluesky's most recent published user count?
Bluesky's own blog, in a post dated 19 March 2026 announcing its Series B funding round, reported over 43 million global users, up from the 13 million figure it reported in its October 2024 Series A announcement.
Does Bluesky publish daily or monthly active user numbers?
The sources checked for this roundup, Bluesky's own blog and TechCrunch's reporting, state total registered user counts, not daily or monthly active user figures. No verified active-user number from a named, dated source is included here for that reason.
How much of Bluesky's user base is estimated to be from Brazil?
TechCrunch's 16 September 2024 report and Bluesky's own 4 September 2024 blog post both state that more than 85 percent of the new users gained during the late August 2024 growth spike were from Brazil, tied to that country's ban on X.
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How big is the Atmosphere, the dataset behind Bluesky and the AT Protocol?
Bluesky's own 19 March 2026 blog post put the Atmosphere, its term for the shared dataset of posts, likes, comments and other interactions across the AT Protocol, at about 20 billion public records. The same post reported over 1,000 apps built on the protocol in weekly use and over 400,000 SDK downloads a month.
How many users did Bluesky have in February 2023?
Bluesky's own 12 September 2023 blog post said the network held only a few hundred people in February 2023, while it still ran as an invite-only waitlist. The same post credited weekly batches of tens of thousands of new invite codes, plus codes existing users could hand out themselves, for taking that number past one million by September of that year.
How much did Bluesky's Series B round raise, and when did it close?
Bluesky's own 19 March 2026 blog post named a $100 million Series B round that closed in April 2025. That post tied the round to the growth between its October 2024 Series A announcement, when it had 13 million users, and its own count of over 43 million users by March 2026.
How many personal data servers run independently on Bluesky's network?
Bluesky's own October 2024 Series A announcement reported more than 1,000 independently run personal data servers. The same post counted more than 50,000 custom feeds users had created, both figures Bluesky presented as activity beyond its own app.
Where did Bluesky rank on Brazil's app store during its growth spike?
TechCrunch reported that Bluesky reached the number one spot on Brazil's free iPhone app chart on 30 August 2024, the day Brazil's Supreme Court ban on X took effect. TechCrunch put Meta's Threads at number two on that same chart that day.
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