- Reddit’s filing for the June 2026 quarter says the price of ads rose about 40% year over year. [1]
- The quarter before that, it was about 32%. This is two consecutive quarters of price inflation, not a spike. [2]
- Advertising revenue grew 64% and impressions 17%, so most of the growth is price, not supply. [1]
- Reddit’s headline efficiency claim for Max campaigns is footnoted to 17 split tests run between June and August 2025. [3]
- Its “2.1x higher incremental ROAS” is footnoted to a multi-touch attribution study, which measures something else. [3]
- Total daily uniques grew 18% in the quarter while logged-in uniques grew 7%: the growth is arriving from search. [1]
- Reddit stops publishing that split with the September 2026 quarter. [1]
- Three dated API changes land between September 21 and December 8, 2026, one of which pauses live ads. [5]
Two documents describe Reddit’s advertising business in 2026. One is a quarterly report filed with a regulator, where a wrong number is a legal problem. The other is a blog post announcing a product, where a wrong number is a marketing decision. They were published five weeks apart, and they do not disagree with each other. They just answer different questions, and almost every write-up you will read this month quotes the second one.
Start there, because it is the number you will feel. Reddit states that during the three months ended June 30, 2026, the price of ads increased by approximately 40% compared to the prior year period, driven by improved performance across the full funnel of ad objectives and higher advertiser demand. [1] In the same period, ad impressions delivered increased by approximately 17%. [1] Advertising revenue grew by $296.8 million, or 64%. [1]
Put those three together and the shape is clear. Roughly two-thirds of the growth came from what a unit costs, not from how many units exist. And it is not one quarter: in the March quarter Reddit reported the price of ads up approximately 32% year over year. [2] Whatever you paid for a Reddit conversion in mid-2025, the auction underneath it has moved twice since.
The claims, and the footnotes under them
On September 3, 2026, Reddit announced that Max campaigns, its automated campaign type, are available to every advertiser, along with Advertising API support, a Smartly integration, and asset groups. [3] The post carries four performance numbers. Each one has a footnote, and the footnotes are where the work is.
| What the post says | What its own footnote says |
|---|---|
| Advertisers see 17% lower costs and CPA, and over 27% more conversions [3] | 17 split tests run between June and August 2025, each 21 days, Max against standard [3] |
| Reddit delivers 2.1x higher incremental return on ad spend than the digital media average [3] | TransUnion, 2025 multi-touch attribution findings across 24 brands and 112 outcome metrics [3] |
| Fender: 148% return, click-through 126% above benchmark, cost per click 46% better [3] | One advertiser, one Black Friday campaign, run with an agency [3] |
| App Max: 15% lower CPA, 28% more results [4] | 16 split tests, January to April 2026, against each advertiser’s business as usual [4] |
None of that is dishonest. Reddit printed the methodology under every claim, which is more than most platforms do, and a 21-day split test against a standard campaign is a real comparison. The problem is the gap between the test and the pitch. The headline number selling a September 2026 product was measured in the summer of 2025, before two quarters of price inflation the same company has since reported, and before the campaign type was rebuilt enough to need a new API surface and a new creative container.
The second row is the one to sit with. Incremental return and multi-touch attribution are not the same measurement. Attribution splits credit among the touchpoints it can see. Incrementality asks what would have happened if the ads had not run, which requires a group that did not see them. A number labeled incremental and sourced to an attribution study has quietly changed the question, and this is the same confusion that makes a channel look like a driver when it is a passenger.
What you are actually buying
The other half of the filing is about who sees your ad. Reddit reports 130.3 million daily active uniques for the June quarter, up 18% year over year. [1] Logged-in uniques, the people with accounts, grew 7%. [1]
That line has been falling for six straight quarters while the headline user number held up, and Reddit explains the difference plainly: visitors who come to Reddit from search engines are generally not logged in, and it monetizes those users mainly through conversation pages and feed ads. [1] It also attributes the change in global daily uniques to the combination of third-party search engine algorithm changes and its own growth initiatives. [1]
For a buyer that is a real distinction, not a technicality. A logged-in Reddit user is somebody inside a community with a history. A logged-out arrival is somebody Google sent to one thread. They can both be worth reaching, but they are not the same audience, and the second one’s supply is governed by a search algorithm nobody at Reddit controls.
You have one more quarter of being able to tell them apart. Reddit states that beginning with the quarter ended September 30, 2026 it will no longer report logged-in and logged-out daily active uniques. [1]
Three dates, and one of them stops ads
While the launch coverage was about automation, Reddit’s API changelog carried the changes that will actually break something. [5] On September 21, 2026, new campaign objective enums roll out and the Lead Generation Forms API is sunsetted, because onsite forms are no longer supported. On September 30, 2026, existing ads using onsite forms are paused. From December 8, 2026, report requests using the HOUR breakdown over a range longer than seven days return a 400 error.
Trade coverage reported September 21 and September 30 as competing dates for one change. They are two changes: the API closes on the first, and live ads stop on the second. If you run lead generation on Reddit with onsite forms, that second date is a campaign going dark, and the fix is the pixel or the Conversions API rather than a form rebuild.
Set your own baseline first. Two or three weeks of standard campaigns at current prices, recorded. Every vendor efficiency claim is against a control you did not run, in an auction that has since moved twice.
Then run the test Reddit ran. A 21-day split, Max against standard, one objective, same creative pool. It is the same design behind the 17% figure, executed on your account instead of somebody else’s, and it is the only version of that number you can act on.
Reddit’s help center, read on the day this piece was written, still titles the page “Max Campaigns (Beta)” and tells you that you might not have access yet. [6] It also limits Max to traffic, app install, and conversions objectives. [6] Ten days after the announcement, the documentation and the press release describe different products, which is a small thing but a useful one: it tells you which of the two you are being sold.
The channel is working. Advertising revenue up 64% in a quarter is not a company struggling to prove itself, and buyers who got in early are the reason the price of ads is up 40%. The reading that survives both documents is simply this. Reddit has become expensive the way successful auctions become expensive, and the material inviting you in is priced at 2025’s efficiency. Set the baseline yourself, because from October the platform will publish one number less about who you are reaching.
Sources
- Reddit, Inc. · Quarterly Report on Form 10-Q, quarter ended June 30, 2026The 40% price increase, the 17% impression growth, the ARPU and daily-unique figures, and the notice that the logged-in split stops being reported.
- Reddit, Inc. · Quarterly Report on Form 10-Q, quarter ended March 31, 2026The prior quarter’s approximately 32% increase in the price of ads.
- Reddit · Performance unlocked: Reddit Max campaigns are now available to all advertisersSeptember 3, 2026. The 17% and 27% claims, the 2.1x line, the Fender and LensDirect case studies, and the footnotes naming the test windows and the TransUnion study.
- Reddit · A new era of app performance for advertisers on RedditMay 20, 2026. The app Max split-test figures and the footnote giving the January to April 2026 window.
- Reddit Ads API · What’s NewThe September 21, September 30 and December 8, 2026 changes, in Reddit’s own changelog.
- Reddit Ads Help Center · Max Campaigns (Beta)The beta label, the access warning, and the three objectives Max supports. Read September 13, 2026.
Frequently asked questions
How much have Reddit ad prices actually risen?
Reddit’s quarterly report for the period ended June 30, 2026 states that the price of ads increased by approximately 40% compared with the prior year period. The report for the quarter before it states approximately 32%. Both figures are Reddit’s own, filed with the Securities and Exchange Commission, and they describe the auction rather than a rate card.
Are Max campaigns really 17% cheaper per conversion?
That is Reddit’s figure, and the footnote under it matters. Reddit attributes it to 17 split tests conducted between June and August 2025, each comparing a Max campaign to a standard campaign over a 21-day period. It is a vendor benchmark from a test set that predates the product’s general release by a year, not an independent measurement of what Max does in your account today.
What does Reddit mean by 2.1x higher incremental ROAS?
Reddit prints that claim with a footnote reading “TransUnion (formerly Neustar), 2025 MTA findings across 24 brands and 112 outcome metrics.” MTA is multi-touch attribution, which distributes credit across observed touchpoints. Incrementality asks a different question, which is what would have happened without the ads. A claim labeled incremental and sourced to an attribution study is worth reading twice.
Is Max available to everyone now?
Reddit announced on September 3, 2026 that Max campaigns are available to all advertisers. As of September 13, 2026, Reddit’s own help center still titles the page “Max Campaigns (Beta)” and warns that you might not have access yet. It also limits Max to the traffic, app install, and conversions objectives.
What is changing in the Reddit Ads API this autumn?
Three dated changes sit in Reddit’s published changelog. On September 21, 2026 new campaign objective enums roll out and the Lead Generation Forms API is sunsetted. On September 30, 2026 existing ads using onsite forms are paused. From December 8, 2026 report requests using the HOUR breakdown over ranges longer than seven days return a 400 error.
Why is the logged-in user number worth watching?
Because it separates the community from the search arrivals. Across the eight quarters ending June 30, 2026, Reddit’s global daily active uniques grew 18% year over year in the latest quarter while logged-in uniques grew 7%. Reddit states that visitors arriving from search engines are generally not logged in, and that it monetizes them mainly through conversation pages and feed ads.
Is that split still going to be published?
No. Reddit states that beginning with the quarter ended September 30, 2026 it will no longer report logged-in and logged-out daily active uniques, because management now uses total and geographic figures to run the business. The last published split is the one in the June quarter report.
So should I run Reddit ads?
The channel is growing fast enough that Reddit’s own advertising revenue rose 64% year over year in the June quarter, which means other buyers are finding it works. The argument here is not against the channel. It is that you should set your own baseline before you switch on automation, because the price you pay is rising at a rate the platform has filed, while the efficiency you are promised rests on tests you cannot inspect.
Mikołaj Salecki
Writes about media, tech, and AI business for people who actually run digital. Former agency lead. Skeptic of frameworks that read better than they perform.
