MentionLeads field guide
Reddit Bot Detection: 10 Tells That Get Comments Removed
Reddit does not publish its full list of bot signals, but ten tells make a comment read as automated. See each, its human rewrite and a 60-second audit.
By MentionLeads · Published October 2, 2026 · 10 min read
In short: Reddit bot detection targets spam and deception, not bots by name: the platform Rules don't mention bots, and since March 2026 Reddit labels registered automated accounts and may ask accounts that look automated to confirm a person is behind them. Business comments get removed or downvoted when they show ten tells, from template shape to borrowed experience.
Reddit bot detection is not a single published system. It is three layers working on your comment at once: Reddit's own automated defenses, the tools each community's moderators switch on, and the readers who vote. Reddit does not publish a full list of its signals, so no outside guide, including this one, can list the exact triggers. What this guide lists are the tells those layers or a human reader act on, the rewrite for each, and a 60-second audit to run before you post.
What did Reddit say about bots and AI-written comments in 2026?
In March 2026 Reddit said registered automated accounts would carry an App label and that accounts showing signs of automation may be asked to confirm a person is behind them. In July it said its systems check signals when an account is created and use language models to catch coordinated fake behavior. TechCrunch reported that using AI to write posts or comments is not against Reddit's policies, though community moderators may set their own rules.
| What Reddit said | Where it comes from |
|---|---|
| Registered automated accounts carry an App label on their profile from 31 March 2026 | Help Net Security, "Reddit declares war on bad bot activity" (26 March 2026) |
| Accounts showing signs of automation or non-human behavior may be asked to confirm a person is behind them, and failing may mean restrictions | Help Net Security (26 March 2026); TechCrunch, "Reddit takes on the bots with new 'human verification' requirements for fishy behavior" (25 March 2026) |
| Signals include how quickly an account tries to write or post; using AI to write posts or comments is not against Reddit's policies, though moderators may set their own rules | TechCrunch (25 March 2026) |
| Systems check signals when an account is created and use language models to catch coordinated fake behavior and artificial hype; moderators get Reputation Filter, Crowd Control and Ban-Evasion Detection; low-quality or manipulative content is quickly downvoted | Reddit Inc., "How We're Keeping Reddit Real and Safe in the AI Era" (6 July 2026, redditinc.com/news) |
| Rule 2 asks users to abide by community rules and participate authentically without spam or content manipulation; Rule 5 asks users not to intentionally mislead others or impersonate in a deceptive manner; the page does not mention bots or AI | Reddit Rules, checked 2 October 2026 |
How do the three layers of Reddit bot detection judge a business comment?
A business comment is judged by three layers in turn: Reddit's automated systems, the community's moderation tools and rules, and the readers' votes. Each layer looks for different tells, which is why a comment can pass the filters and still sink at the vote, or read perfectly and be removed because the account is new.
| Layer | What Reddit says it does | Tells that fit this layer (our reading) |
|---|---|---|
| Reddit's automated systems | Checks signals at account creation, uses language models for coordinated fake behavior, asks suspicious automated accounts to verify, looks at how quickly an account writes or posts | A brand-new account opening with a product comment; the same text from several accounts; machine-like timing |
| Community moderators | Reputation Filter to catch spammers, Crowd Control to restrict low-trust accounts, Ban-Evasion Detection, plus each community's own rules | Links from low-history accounts; promotion the rules forbid; alternate accounts |
| Readers | Upvotes and downvotes decide visibility, and low-quality or manipulative content is quickly downvoted | Template shape, stock openers, advice with no detail, relentless positivity |
Which 10 tells make a Reddit comment look automated?
Ten tells make a business comment look automated: template shape, stock openers, advice that fits any thread, borrowed experience, a link from a fresh account, copy-paste across threads, machine-like timing, coordinated praise, over-formatting, and a reply with no limits or opinion. These are editorial observations, not Reddit's published criteria, and the fix for each is to add something only a person who read the thread would know.
| # | Tell | What it looks like | The human version |
|---|---|---|---|
| 1 | Template shape | Compliment, restated question, three bullets, sign-off, product mention | Start with the answer in the poster's terms and skip the restatement |
| 2 | Stock opener | "Great question!", "Absolutely!", "This is a common challenge" | Begin with the first useful fact |
| 3 | Advice that fits any thread | "Focus on your value proposition and audience" | Quote a detail from the post (their number, constraint or tool) and answer that |
| 4 | Borrowed experience | "I've used it for years" from a days-old account; "we've helped hundreds of teams" | Say only what is true: "I build X" or "I tried this on one project" |
| 5 | Link or brand from a fresh account | A link and a product name before any history | Answer first, let the profile carry the link, and name a product only when asked or when the rules allow it |
| 6 | Copy-paste across threads | The same paragraph in several threads or communities | Rewrite from each thread; reuse ideas, not sentences |
| 7 | Machine-like timing | Replies minutes after each post, in bursts, at all hours | Fewer replies, spaced out, after reading the existing comments |
| 8 | Coordinated praise | Several accounts, teammates included, recommending the same product | One account and one disclosed voice; never ask anyone to upvote or comment |
| 9 | Over-formatting | Headers, bold labels and bullet lists answering a casual two-line question | Match the thread: one or two paragraphs, and a list only when asked for options |
| 10 | No limits, no opinion | Relentlessly positive, with no "skip this if" line | Include one trade-off, especially about your own product |
Tells 4, 5 and 8 are more than style. Reddit's platform rules ask users not to intentionally mislead others (Rule 5) and to avoid spam and content manipulation (Rule 2), and Reddit says its systems look for coordinated fake behavior and artificial hype. Our guide to why Reddit removes business comments covers the community-rule side of removals, and Reddit replies that don't sound like AI but still promote goes deeper on tone.
How can you tell if a Reddit commenter is a bot?
You cannot be certain that a Reddit commenter is a bot from one comment, so treat a suspicion as a reason to look closer, not to accuse. A cluster of tells across one account's history is stronger evidence than any single reply: the same shape in every comment, a product in every thread, bursts of replies at all hours, or several accounts praising the same product.
- Open the account's profile and read ten comments in a row; a template shows up as repeated structure and repeated openers.
- Check whether the account talks about anything besides one product.
- Compare timing: many comments within minutes across many communities deserve a closer look.
- Use the report button for content that appears spammy or inauthentic, as Reddit's July 2026 post asks, and leave the accusation out of the thread.
What does a human version of a business reply look like?
A human version of a business reply answers in the poster's terms, uses one detail from the thread, discloses the connection to any product it mentions and states one limit. The example below is illustrative and was written for this guide; it is not a real thread, and it is not a result.
| Version | Reply to "Small bookkeeping firm, about 20 clients, all non-technical. Chasing documents by email is chaos. Any tool recommendations?" |
|---|---|
| Bot-shaped | "Great question! Document collection is a common challenge for bookkeeping firms. Key factors to consider are ease of use, security and integrations. Tools like [Tool] offer all of these, and I would highly recommend checking it out!" |
| Human-shaped | "With 20 non-technical clients, the deciding question is whether they can upload from a phone without creating an account. Check that first; it narrows the field fast. Then check whether you can request a named document, like Q3 bank statements, and see who has not sent it. I work on [product], so weigh that. If upload-without-login is the must-have, I would shortlist [A] and [B] before us; we are weaker at [limit]." |
- Answer first, in the poster's terms.
- One detail from the thread that only a reader would know.
- A criterion, not a verdict, so the poster can decide.
- A disclosure line the moment a product you work on appears.
- One limit, ideally about your own product.
- No link unless the poster asks or the community's rules allow it.
Does Hacker News allow AI-written comments?
Hacker News does not: its guidelines say "Don't post generated text or AI-edited text. HN is for conversation between humans," and they also ask users not to automate posting. That is stricter than Reddit's platform rules, so a comment you would post on Reddit after review can still be unwelcome on Hacker News. Write Hacker News comments yourself, from scratch.
How do you audit a comment in 60 seconds before posting?
Audit a comment in 60 seconds by counting how many of the ten tells it shows: zero to two is fine to post, three to five needs a rewrite, and six or more should not be posted. The thresholds are a convention you can change, not a platform rule.
- Does it open with praise or a restatement of the question?
- Could it sit under a different thread with only the nouns changed?
- Does it claim experience you cannot show?
- Does it carry a link or product name from an account with little history?
- Did you post similar text elsewhere today?
- Are you replying faster than you could have read the threads?
- Will anyone else on your side praise the same product in this thread?
- Is it formatted more heavily than the question?
- Does it lack one limit or "skip this if" line?
- Does it avoid every detail from the thread (a number, a constraint, a tool)?
Count the yes answers. Our free Reddit post checker and Reddit reply generator can give a second read on a draft.
Frequently asked questions
Does Reddit ban AI-generated comments?
Reddit's platform rules, checked on 2 October 2026, do not mention AI-written text, and TechCrunch reported in March 2026 that using AI to write posts or comments is not against Reddit's policies. Communities set their own rules, which can restrict AI-written text, so read the rules first. Automation that behaves like a bot is a separate risk.
How does Reddit detect bots?
Reddit has not published a full list of its detection signals. Its July 2026 post says its systems check signals when an account is created and use language models to catch coordinated fake behavior, and its March 2026 announcement says accounts showing signs of automation may be asked to confirm a person is behind them. Moderators also use Reputation Filter, Crowd Control and Ban-Evasion Detection.
How do I write a Reddit comment that doesn't sound like a bot?
Answer in the poster's own terms, use one detail only a reader of the thread would know, disclose your connection to any product you mention and include one limitation. Keep the format as casual as the thread, space your replies out, and run the ten-tell audit before you post.
Start here
Run the audit on your next five drafts before you post any of them. The goal is fewer, better comments, not a way around anything.
- Rewrite any draft that scores three or more, starting with tells 3, 4 and 5.
- Read the community's rules and check your account's standing first; the free Reddit shadowban checker shows whether your comments are visible.
- Keep a person on the send button: review every reply yourself before it goes out.
MentionLeads, a Reddit lead generation tool, drafts replies in your voice for you to approve, and its "Will it land?" check predicts votes, removal risk, shill score and likely replies before you post; nothing posts on its own. Treat any prediction as input to your edit, not a guarantee. Disclosure: MentionLeads publishes this guide, and the audit above works without it.
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