How many members does r/MachineLearning have?

r/MachineLearning has about 3.1M members (as of July 2026).

How active is r/MachineLearning?

r/MachineLearning gets roughly 7 new posts per day (measured July 2026).

Strictly limited

Promoting on r/MachineLearning: Rules and What Gets Removed

r/MachineLearning is a large machine learning community with 3,061,864 members, aimed at technical ML content while directing beginners to /r/mlquestions or /r/learnmachinelearning and career questions to /r/cscareerquestions.

3.1M

members

posts / day

2009

created

community rules

Can you promote your product in r/MachineLearning?

You cannot use r/MachineLearning to directly promote a paid product. Rule 2, "No Self-Promotion," says the subreddit "does not permit the promotion of paid products" when the intent is clearly promotional, but links to paid products can be acceptable if the post provides sufficient value to the community and the intent is to share a resource or collect feedback for an open dialogue, with the decision left to moderators. Rule 1, "No Spam," and Rule 3, "No Marketing Campaigns (SEO)," make the overall approach strict.

The rules that cover promotion

Rule 2: No Self-Promotion

"r/MachineLearning does not permit the promotion of paid products, wherein the intent is clearly to promote a particular product."

Rule 2: No Self-Promotion

"posts with links to paid products are acceptable, contingent on the fact that the post offers sufficient value to the community members and the intent is to share a resource or collect feedback for an open-dialogue."

Rule 1: No Spam

"The posts deemed to be spam will be removed, and repeat offenders will be permanently banned from participating in the subreddit."

Rule 3: No Marketing Campaigns (SEO)

"r/MachineLearning strictly prohibits strategic marketing campaigns targeted at community members, and posts intended to rank for SEO purposes."

Quoted from the subreddit's own rules, snapshot from July 2026. Read all 6 rules on Reddit

What gets removed

Spam posts are removed, repeat offenders can be permanently banned
Promotion of paid products when the intent is clearly promotional
Strategic marketing campaigns targeted at community members, and SEO-driven posts
Bare arXiv links, low-effort research posts, and posts without appropriate tag

Safer ways to show up

If you link a paid product, make the post a resource or feedback request with sufficient value to the community
Use the appropriate tag such as [R], [D], [P], or [N]
Add technical detail, do not post low-effort content
For research links, include body text with commentary or analysis to start discussion

Whatever the written rules say, the pattern that gets promo removed everywhere is the same: batches of similar comments, reused wording, and necro-posting on old threads. A promotional mention only has value if it survives, so pace matters more than volume. We measured this the expensive way: 70% of bought pool comments were removed within two weeks. See also how to find customers on Reddit without getting banned.