Key Takeaways: Whether you can post AI-written content on Reddit depends on the community, and a growing number say no. We read the published rules of 562 subreddits (every subreddit listed in our directory pages that had rules in an archive captured in January and February 2025). 90 of them restrict AI-generated content in some way: 52 ban AI-written posts or comments outright, 7 treat AI text as low effort or leave it to moderator discretion, 10 allow it only under conditions, and 21 restrict only AI images or media. The professional communities B2B marketers care about split sharply. r/marketing, r/sales, r/salesforce and r/cybersecurity banned AI-written content, while r/SaaS, r/startups, r/Entrepreneur, r/GrowthHacking and r/SEO had no AI rule at all. The data is a 2025 snapshot, so check each community's current rules (linked below) before you post.
The short answer
Reddit communities set their own rules on AI-generated content, and there is no single answer for "Reddit". In the rules we read, about one subreddit in six (90 of 562) had a rule restricting AI content. About one in eleven (52) banned AI-written text outright.
The restrictions are not spread evenly. They are common in communities whose value is human judgement: advice, health, writing, art, programming help and some professional fields. They are rare in founder and growth communities, where the rules focus on self-promotion instead.
That matches published research. A study of more than 300,000 public subreddits by Travis Lloyd, Jennah Gosciak, Tung Nguyen and Mor Naaman (presented at CHI 2025) found that AI rules were still relatively uncommon, but that the number of subreddits with such rules more than doubled over the course of a year. It also found the rules were more common in larger subreddits and in art and celebrity communities (arXiv 2410.11698).
How we checked
- Which subreddits: every subreddit named on GrowReddit's subreddit directory pages, 693 distinct communities. 562 had a rules record in the archive; 131 returned none and are left out rather than guessed.
- Source: the Arctic Shift archive of subreddit rules, which stores each community's published rules with the time they were captured. Every record we used was captured between 19 January and 4 February 2025. We could not read reddit.com directly from our tools and did not try to get around that.
- How rules were classified: we searched every rule for AI-related wording, then read each match. A rule counted as a restriction only if it limited AI-generated posts, comments or media. Rules that merely mention ChatGPT as a topic (r/ChatGPT, r/ChatGPTPro and similar) were excluded. Eleven matches were excluded this way.
- What could be missed: a rule that restricts AI content without using AI-related words, and anything moderators enforce without writing it down. The count of 90 is therefore a floor.
The tables below paraphrase each rule and quote only rule names. Each subreddit name links to its current rules.
Marketing, sales and business subreddits
| Subreddit | Rule name | What it says |
|---|---|---|
| r/marketing | AI generated content | Says the subreddit is for humans, not bots, and asks members not to copy and paste AI-generated content. Separately, advertising and self-promotion are not allowed |
| r/sales | No AI Generated Content | The subreddit is for real users discussing their own thoughts; posts and comments suspected of being AI-generated may be removed |
| r/salesforce | No AI-Generated Posts/Comments | A flat rule with no further text |
| r/BusinessIntelligence | No Bot or AI content | A flat ban |
| r/freelanceWriters | Rule 1C: AI-Generated Content | AI-generated posts and comments are not allowed and are removed |
| r/resumes | Do not use AI generated content | Content that appears to be AI-generated is removed |
| r/Design and r/graphic_design | No memes, AI farming and low-quality posts | Obvious AI-generated posts are removed and lead to a ban |
| r/InternetIsBeautiful | No AI-Generated Content | Posts based on content from ChatGPT, other large language models or other AI tools are not allowed. This is where people often share new websites and tools |
What is missing matters as much. In the same archive, these communities had no rule that mentioned AI content: r/SaaS, r/startups, r/Entrepreneur, r/smallbusiness, r/GrowthHacking, r/SEO, r/PPC, r/ecommerce, r/shopify, r/indiehackers, r/EmailMarketing, r/socialmedia, r/content_marketing, r/copywriting, r/digital_marketing and r/B2BMarketing. That is not permission. Their self-promotion rules are strict, and posts that read as generic or low effort are removed under quality rules whoever wrote them. It does mean the rule you will be removed under is usually the promotion or quality rule, not an AI rule.
Technology, security and developer subreddits
| Subreddit | Rule name | What it says |
|---|---|---|
| r/cybersecurity | No low effort / poor quality posts | AI or machine-generated content, linked or posted directly, is explicitly forbidden and removed when discovered. The same rule names SEO farming |
| r/hardware | Misc. Rules | No AI-generated articles, videos or other AI content |
| r/networking | Rule #8: No ChatGPT/LLM Prompts | Calls ChatGPT an unreliable source of truth |
| r/golang | No GPT-generated or GPT-quality Content | No AI-generated posts, link targets or comments; posts about AI and Go are fine |
| r/learnprogramming | AI generated | No AI-generated posts or comments, removed without warning, and the poster is banned |
| r/learnpython | No replies copy / pasted from ChatGPT or similar | Applies to answers |
| r/Frontend and r/typescript | ChatGPT comment/post | Asks members to write their own opinions |
| r/homeassistant | No AI generated responses | ChatGPT-style answers are not allowed |
| r/kubernetes | Use LLM-generated content respectfully | Using an LLM as a starting point is fine; obviously AI-generated articles or comments are not |
| r/FlutterDev | No AI Generated Articles | Low-effort LLM-written posts are not welcome; ChatGPT for an outline is acceptable |
| r/Python | No overdone or low quality AI showcases | AI-wrapper showcases go to the daily thread |
| r/googlecloud | AI Generated Responses | Allowed, but every answer must be factually correct and the steps must work |
| r/LLMDevs | Provide sources and references | AI-generated content needs context and attribution |
| r/Futurology | Rule 12 - Original Sources | AI-generated text does not count as an original source |
Developer tools are the category where AI rules most often name a penalty. If your product is for engineers, a drafted-by-AI post is not a style problem in these communities; it is a removal and possibly a ban. See the cybersecurity and AI directories for each community's promotion rules as well.
Finance subreddits
| Subreddit | Rule name | What it says |
|---|---|---|
| r/personalfinance | Unhelpful or disrespectful | Lists bots and AI-generated content among things not allowed |
| r/UKPersonalFinance | No trolling, bots or memes | No AI-generated posts or comments |
| r/FinancialPlanning | No low effort/quality submissions | Link-only and AI-generated posts are not allowed |
| r/CFP | Posts consisting of predominantly AI generated content are prohibited | The rule name is the rule |
| r/investing and r/StockMarket | No low effort posts | A post with large amounts of generative-AI text counts as low effort |
| r/ValueInvesting | Other | Posts written by AI may be removed at moderator discretion |
Finance communities combine AI rules with some of Reddit's strictest promotion rules. Our finance subreddit directory lists each one's promotion rule, and the r/fintech guide covers the one finance community that allows sharing your own work with disclosure.
Large general communities with AI rules
These are not marketing communities, but brands run into them when a product is relevant to a hobby or a question. In the archive:
- Banned AI-written content: r/DIY (no AI-generated or AI-assisted posts, comments, guides or images), r/Cooking, r/Music, r/space, r/history, r/askscience, r/AskDocs, r/medicine, r/booksuggestions, r/suggestmeabook, r/travel (AI-only posts and comments), r/keto and r/mentalhealth.
- Ban as the stated penalty: r/woodworking (instant ban), r/patientgamers (permanent ban) and r/movies (using AI while pretending to be a real user).
- Images and media only: r/Art, r/DigitalArt, r/Illustration, r/drawing, r/painting and r/analog restrict AI imagery rather than text.
What this means for brands that draft with AI
- Read the rule before deciding how to write. In 52 communities the answer is simply "write it yourself". In a handful (r/kubernetes, r/FlutterDev) AI help with an outline is explicitly fine. In most of the founder communities there is no AI rule, and the quality and promotion rules decide.
- Generic is what gets caught. The rules rarely describe a detection method; they describe the symptom: low effort, no first-hand detail, "naked LLM responses". A second study by Lloyd, Joseph Reagle and Mor Naaman, based on interviews with 15 moderators of communities that restrict AI content, found that moderators rely on detection heuristics that are time-intensive and inaccurate, and that they still limited the disruption by working with their communities to clarify norms (arXiv 2311.12702, CSCW 2025). Specific numbers, named tools you actually used and a real opinion are what distinguish a human post.
- Disclosure does not override a ban. Where a community bans AI-written content, saying "I used ChatGPT for this" does not make it allowed. Where a rule asks for attribution (r/LLMDevs), it is required.
- Check the live rules, every time. These records are from early 2025, and the research above suggests the number of communities with AI rules has kept growing. A community with no AI rule in the archive may have one now.
- Respect promotion rules too. An AI rule is usually the second thing that removes a brand's post; the self-promotion rules are the first. The r/marketing guide covers a community that bans both.
Limitations
- Age: rules captured 19 January to 4 February 2025. They have certainly changed in some communities.
- Coverage: 562 subreddits, chosen because they appear in GrowReddit's directories. They lean toward business, technology and hobby communities with commercial relevance, so the proportions here should not be read as a measure of all of Reddit.
- Unwritten rules: moderators can remove content under general quality rules, and some enforce norms they have not written down.
- Our reading: each rule was classified by a person reading the text, not by keyword alone, but classification of borderline rules (for example "may be removed at moderator discretion") is a judgement.
If a rule here has changed, tell us through the contact page and we will correct and re-date the entry.
Where to go next
If you are planning how your team shows up in communities like these, our subreddit directories list each community's promotion rules alongside what its members discuss, the Reddit self-promotion rules guide explains the 90/10 rule, and the list of self-promotion threads shows where 46 subreddits allow promotion and when. To talk through a plan for your product, book a call.