About r/MachineLearning
In its own words:
Beginners -> /r/mlquestions or /r/learnmachinelearning , AGI -> /r/singularity, career advices -> /r/cscareerquestions, datasets -> r/datasets
The community was created on Jul 29, 2009, which makes it 17 years old. Since Oct 19, 2026, it has gained 1,679 subscribers (+0.06%). Among the 12 communities on our artificial intelligence list it is number 2 by size.
What sets r/MachineLearning apart
r/MachineLearning is far more text-driven than most big subreddits: 72% of its recent posts are text posts, against a median of 17% across the Top 100. People mostly look and upvote here rather than comment — about 4.2 comments per post, against 16.2 for a typical large subreddit.
Subscriber growth
Between Sep 19, 2026 and Oct 29, 2026, r/MachineLearning climbed from 3,072,493 to 3,079,505 subscribers (+7K, +0.23%). That is about 175 new members per day. The chart uses our weekly snapshots (8 so far), so it gets longer every week.
What r/MachineLearning talks about
Looking at the titles of 93 recent posts (Oct 21–Oct 28), the words that come up most are “built”, “models”, “agent”, “transformer” and “model”. Other frequent themes are feedback, self-distillation, training, llm, ema and teacher. Recurring phrases include “welp told”, “ema teacher”, “scale zero-3” and “next-concept modeling”. By format, 72% are text posts, 13% are images and 6% are links.
Popular post flairs: Project (41), Discussion (27), Research (21), News (4).
Activity and best time to post
r/MachineLearning gets about 13 new posts a day. The public archive holds 263,763 posts and 1,112,582 comments in total, about 4.2 comments per post. Last week the busiest day was Tuesday (26 posts) and the quietest was Thursday (7). Posting peaks around 19:00 UTC and is lowest around 20:00 UTC.
Rules of r/MachineLearning
The moderators of r/MachineLearning list 8 rules. In short:
- Be nice: no offensive behavior, insults or attacks
- Make your post clear and comprehensive
- Posts without appropriate tag in title will be removed
- Beginner or career related questions go elsewhere
- Non-arxiv link posts only allowed on weekends (must be demos)*
- Beginner's tutorials and projects go elsewhere
- Quality Contribution
- Limit self-promotion
How to join
Open reddit.com/r/MachineLearning and press “Join”. Read the community rules in the sidebar before you post: every subreddit is run by its own volunteer moderators.
Frequently asked questions
How many members does r/MachineLearning have?
r/MachineLearning has 3,079,505 subscribers, which makes it the #349 safe-for-work subreddit in the SubMouse ranking. It added 7,012 members between Sep 19, 2026 and Oct 29, 2026.
When was r/MachineLearning created?
r/MachineLearning was created on Jul 29, 2009, so it has been around for 17 years.
Is r/MachineLearning still active?
Yes. r/MachineLearning gets about 13 new posts a day (average of the last week). Over its lifetime the archive counts 263,763 posts and 1,112,582 comments. In a sample of 93 recent posts we counted 77 different authors.
What is the best time to post in r/MachineLearning?
Based on post counts from Oct 22, 2026 to Oct 28, 2026, the busiest day was Tuesday and the quietest Thursday, and most posts arrive around 19:00 UTC, with the fewest around 20:00 UTC. More posts also means more competition, so a quieter hour can help a post get noticed.
What kind of posts are on r/MachineLearning?
The community describes itself as: “Beginners -> /r/mlquestions or /r/learnmachinelearning , AGI -> /r/singularity, career advices -> /r/cscareerquestions, datasets -> r/datasets” Recent post titles often mention built, models, agent, transformer and model. Most posts are text posts (72%).
Is r/MachineLearning SFW?
Yes. Reddit does not mark r/MachineLearning as an 18+ (NSFW) community. SubMouse lists safe-for-work subreddits only.
What are the rules of r/MachineLearning?
Join the community on Reddit first, then use “Create post”. r/MachineLearning accepts both text and link posts, with images and galleries enabled. It has 8 posted rules, starting with: “Be nice: no offensive behavior, insults or attacks”; “Make your post clear and comprehensive”; “Posts without appropriate tag in title will be removed”. Moderators remove posts that break the rules, so read them in the sidebar before posting.
What subreddits are similar to r/MachineLearning?
Communities with similar topics include r/beginnerfitness (3M), r/InternetIsBeautiful (16.6M), r/Damnthatsinteresting (20.6M), r/Showerthoughts (34.2M) and r/Jokes (30.4M).
Stats from public data (data updated Oct 29, 2026; activity, rules and archive totals via the Arctic Shift archive, Oct 30, 2026). Point and comment counts are archive snapshots and can be lower than on Reddit today. SubMouse is an independent directory and is not affiliated with Reddit or the moderators of r/MachineLearning.