Comparing Reddit Ads to Google Ads is a bit like comparing a trade show to a phone book. One puts you in front of people who have already decided to look for you. The other puts you in front of a group you can name, who have not.
Both are useful. They fail in different directions, and the mistake most teams make is judging one by the other’s metrics.
The comparison, honestly#
| Reddit Ads | Google Search Ads | |
|---|---|---|
| Intent | Contextual - the community and thread are the signal | Explicit - they typed the query |
| Targeting unit | Subreddits, interests, keywords in conversations | Search keywords |
| Audience you can reach | Niches that search volume cannot isolate | Anyone actively searching |
| Creative that works | Reads like a post: plain, specific, honest | Reads like an answer to the query |
| Public replies | Yes, under your ad, visible to everyone | No |
| Competition | Thin in most niches | Dense, and priced accordingly |
| Typical cost behaviour | Lower cost per click, lower intent per click | Higher cost per click, higher intent per click |
| Measurement | Imperfect; assisted and self-reported matter | Clean, last-click friendly |
| What it is bad at | Capturing demand that already exists | Reaching a specific community |
The cost line is the one that misleads people. Reddit clicks are usually cheaper, but they are cheaper because the person had not decided to buy anything. Comparing cost per click across the two is meaningless; comparing cost per qualified outcome is the only version that means anything.
Where each one genuinely wins#
Google wins when demand already exists#
If people search "payroll software for restaurants" a thousand times a month, search ads capture that demand at a known price, today. Nothing on Reddit replaces it, and if you are not already capturing your branded and high-intent category searches, do that before you experiment anywhere else.
Reddit wins when the audience is definable but not searchable#
This is the structural advantage, and it is worth stating precisely: Reddit lets you target a group by who they are, when no keyword identifies them.
There is no search query for "person who manages IT for a mid-size dental practice". There is a subreddit. There is no keyword that reliably isolates "people who roast their own coffee at home and are frustrated with their grinder". There are three subreddits, and they are active daily.
In categories like these, Reddit reaches an audience search cannot construct at any budget.
Reddit also wins on the objection nobody types#
Search ads answer the question asked. Reddit ads sit inside a thread where the real objection is being discussed - the migration pain, the thing that broke last time, the reason the incumbent is tolerated. Conversation placements put your message next to that discussion, which is a different and often more valuable moment.
What Reddit Ads demand that Google does not#
Creative written as a post. Your existing display and paid social assets will underperform badly, and the comment section will say why in public. What works reads like a person typed it: plain language, a specific claim, and an honest limitation. The variant that names a weakness routinely beats the one that does not.
Someone answering the comments. Reddit is the only major ad platform where the audience replies underneath your ad, publicly, permanently. Leaving a critical comment unanswered under a live paid impression is worse than not running the ad. Answering it well is the most persuasive thing on the page.
Patience with the test window. Four to six creative angles across a couple of community clusters need enough time to produce a real signal. A two-week test with one angle tells you nothing except that the angle failed.
A decision framework#
Start with Google if: people already search your category by name, your CAC targets are tight and immediate, or you have never captured your own branded search.
Start with Reddit if: your buyers are a definable community with no clean keyword, search in your category is priced beyond your economics, or you are pre-demand - solving a problem people do not yet have a name for.
Run both if: you have product-market fit and a category with existing search demand. They do different jobs: search captures, Reddit creates and defends.
Add organic Reddit either way, because the person who sees your Reddit ad will check what Reddit says about you, and silence is a bad answer. Paid gets you the impression; the organic presence is what makes it convert.
What to expect from a first Reddit test#
Not a verdict in two weeks. A realistic first test is four to six weeks, several creative angles, two or three community clusters, and the explicit goal of learning which angle resonates rather than hitting a CPA. Judge it on that, then optimise toward efficiency in the second month.
And instrument it properly before you start: the Reddit Pixel, conversion events, and a "how did you hear about us" field on your signup form. That last one is not a nice-to-have. On a channel this prone to being under-reported by last-click, it is frequently the only place the truth shows up.
FAQ#
Are Reddit Ads cheaper than Google Ads?#
Cost per click is usually lower, sometimes substantially, because competition is thinner. Cost per qualified conversion depends entirely on your category - Reddit’s traffic starts with lower purchase intent, so a cheaper click is not automatically a cheaper customer. Compare the two on downstream outcomes only.
Do Reddit Ads work for B2B?#
Yes, in categories where the evaluator is a practitioner - IT, devops, security, data, accounting, healthcare IT. Those people are in role-based communities daily. It works poorly for reaching senior executive buyers, who are much less likely to be there in that capacity.
Should I turn comments off on my Reddit ads?#
Usually not. The comments are part of what makes the format work: a prospect seeing hard questions answered openly under your ad is stronger evidence than the ad itself. Turn them off only in a live reputational crisis, and treat that as temporary.
How much should I budget to test Reddit Ads?#
Enough to get real data on four to six creative angles over four to six weeks, which depends on your category’s CPMs and your target CPA rather than on a universal number. Size it against what an equivalent-quality test would cost you on search, and be sceptical of anyone quoting a figure before they have seen your economics.
Written by Sparkside AI. We publish what we have actually worked out - if something here is wrong or out of date, tell us and we will fix it.