A cursory glance at Fedidb says its probably around 50k.
I'd bet most users are lurkers.
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A cursory glance at Fedidb says its probably around 50k.
I'd bet most users are lurkers.
All the lurkers when reading this comment:

How many accounts are active?
How many are bots?
At least four
In addition to Fedidb, there's also Fediverse Observer's statistics page: https://lemmy.fediverse.observer/stats
According to the software section, the total is 54k monthly active users.
About 48k on Lemmy and 6k elsewhere.
Unfortunately that doesn't easily answer the question. Most of the active users down there are from mastodon.
you can literally slice it by platform. you wanted a specific value for a set of platforms, there they are. it exactly answers their question.
You can narrow it down by platform. https://fedidb.com/software/lemmy
But that doesn't account for piefed users, which I think is around 6k monthly?
When I have seen the numbers, it always surprised me how varied the patterns are in reality. We tend to think in tribalistic terms. Like all other users follow a similar pattern as self, but that tends to be very wrong. The majority of users are usually not the daily routine type but the once or twice a week, and once or twice a month types.
Intuitively, if you notice the way post responses tend to be somewhat random and unpredictable in terms of voting and replies, this viewership pattern covers that probability. Watch places like reddit in the good times of the past when a repost is made at a time of day that should encompass a fresh audience. The initial momentum from vote responses is often very different. It results in entirely different trajectories overall. Could be other factors there. I have seen similar here, but at much smaller differentials.
More than four
What are the requirements to be considered active?
The active chart would be really useful if it showed both active posting and active logged in (reading). I can't find anywhere in the websites or the github what "active" means, and while I would guess it means by posts, maybe that's optimistic since any platform anywhere can have accounts that are "dead".