Both get cited. Posts get cited more. It is a probability difference rather than a rule, and anyone telling you comments never get pulled is overstating it.
The question keeps coming up because the advice is contradictory. Some guides say comments are the real citation surface, others say only substantial original posts survive. Both camps are generalising from small samples.
So here is what the mechanism implies, what our own scan showed, and how to check the answer for your category rather than trusting either camp.
What does the evidence show?
Mixed, and thin. Nobody has published a large clean study isolating comment citations from post citations, which is the whole reason the advice conflicts.
What did we measure?
We logged every source across four engines answering one Reddit-related prompt. Three retrieved live and produced 42 citations between them.
Three of those 42 came from reddit.com, and all three were substantial original posts. Zero were comments.
Why is that suggestive but not conclusive?
A sample of three is a sample of three. It points at a tendency without establishing a rule, and the prompt itself was analytical rather than the recommendation type where comments are supposed to do best.
The useful read is directional. Posts look like the higher-percentage asset, and a strategy betting entirely on comments is betting the weaker side of an unclear split.
Why do posts have the advantage?
Three structural reasons, all of which follow from how retrieval works rather than from anything Reddit-specific.
| Property | Original post | Comment |
|---|---|---|
| Own URL and title | Yes | No, lives inside a thread |
| Found by title match | Yes | Only via the parent thread |
| Position stability | Fixed | Moves with vote order |
| Attribution on click | Lands on your writing | Lands on a page of forty replies |
| Retrieval it depends on | Its own | Whatever the thread earned |
Why are posts addressable and comments not?
A post has its own URL, its own title, and its own place in the index. An engine can find it directly by matching the question to the title.
A comment lives inside someone else's page. It has an anchor, but the unit that ranks and gets retrieved is the thread, so the comment inherits whatever that thread earned and nothing more.
Which one persists better?
Threads get archived, locked, reorganised. Comment ordering shifts with votes, so a reply sitting at the top when a thread was first indexed can be buried by the time anything re-crawls it.
The post itself does not move. That stability matters when citation depends on surviving multiple crawl cycles, which every cited thread we have logged did.
Which one credits you more cleanly?
When an engine cites a thread, it credits the thread. A reader following that citation lands on the discussion, and whether they find your specific comment depends on where it sits.
The value leaks. A cited post sends the reader to something you wrote, whereas a cited thread drops them onto a page where your contribution is one of forty replies and they may never scroll far enough to find it.
When do comments get cited?
On a specific shape of question, and under conditions you mostly do not control.
Which threads pull comments?
Comments do best on a narrow set of conditions, all of which have to hold at once:
- The question is a recommendation, not a mechanism
- The parent thread already ranks and gets retrieved
- Your reply is the clear standout, not merely present
- The thread is old enough to have been re-crawled
Engines summarising community consensus reach into the replies for exactly that shape.
The condition is that your comment has to be the standout, not merely present. In a thread with thirty replies, fourth-best is worth nothing.
When is the thread doing the work?
If the thread already ranks and gets retrieved, its comments come along for the ride. Genuinely valuable, and the reason commenting on established threads has a real case.
But note the dependency. You are borrowing the retrieval that someone else's post earned, which means you cannot plan around it, only take it when it appears.
How do you write a comment that can be cited?
The bar is the same as the bar for any citable passage. It has to make sense lifted out of context.
How do you make a comment standalone?
Write so that someone reading the comment with no view of the thread still understands both the question and the answer. Replies opening with "this" or "same here" are uncitable by construction.
Restate what you are answering in the first line. It costs one sentence and it is what makes the passage extractable.
How specific does it need to be?
Prices, limits, timelines, version numbers. "It works well" cannot be quoted. "It caps at 500 rows on the starter plan" can.
Specificity is what separates a citable answer from an agreeable one. It is the same property that makes a page get cited by ChatGPT rather than merely read.
Why name the tradeoff?
An answer that says where something falls short reads as an assessment rather than an endorsement. That is what retrieval systems and human readers are both filtering for.
Uniformly positive comments look like marketing even when they are sincere.
Does the training-data argument change this?
It comes up constantly and it changes nothing about what you should do. Licensing deals mean Reddit content can reach a model through training as well as through live retrieval.
How do training and retrieval differ?
Content absorbed in training shapes what a model knows in general. Content fetched at answer time is what produces a citation with a link attached.
Only the second is measurable, attributable, and reachable on a timescale you can plan around. A comment posted today is not landing in any training corpus you can influence this quarter.
Why does that distinction matter?
If you are chasing citations, you are chasing retrieval, and retrieval rewards addressable, persistent, specific pages. That is the same logic that governs answer engine optimization everywhere else.
Treat the training angle as a long-term brand effect you cannot measure, not as a reason to prefer one Reddit format over another.
How do you check this for your own category?
Do not take our three-of-three, or anyone else's numbers. The split differs by question type, and your prompt mix decides which side of it you land on.
How long does the check take?
Run 20 to 30 buyer questions across the engines you care about and log every cited URL. For each reddit.com citation, open it and record whether the engine credited the post or a specific comment.
That ratio is your answer. The method is the same as the free 20 minute check, with one extra column.
What does the result tell you?
A high comment share means your prompts are recommendation-heavy and commenting on live threads earns its hours. A high post share means original posts are the better bet. Either way it is one input into the visibility score, not a number on its own.
No Reddit citations at all is a real result too, and a common one. It usually means your prompt set is weighted toward definitional and mechanism questions, the kind that pull explanatory articles rather than peer opinion, and no amount of posting will change that.
Engines differ here too, so read the split per engine rather than pooled. Perplexity and Google AI Overviews diverge enough that a pooled number can hide the pattern.
Where Unveilr fits
Unveilr runs this as a standing measurement rather than a one-off count. Agents scan a fixed prompt set, log every cited source down to the individual thread, update the content and presence that lost, then re-scan to confirm the change held.
Recording the citation at thread level is what makes the post-versus-comment question answerable at all. Most source audits stop at the domain, which collapses the distinction entirely.
In one D2C case study, the brand moved from the 9th most-cited domain in its category to number 1, with ChatGPT visibility rising from 3.3% to 44.7%.