Streaming Audio Campaign Planner
Streaming audio is bought on a CPM, but the number that actually matters is the cost of a completed, listened-to ad. Enter a budget and a format and this planner estimates impressions, unique reach, completed listens, and cost per completed listen — then compares every format side by side so you can see the trade-off before you spend.
Set a monthly budget, pick a format (music streaming, podcast host-read, podcast dynamic insertion, or programmatic audio), and choose a target frequency. The planner returns impressions, unique reach, completed listens, and cost per completed listen — the honest unit for non-skippable audio — plus an effective CPM and an at-a-glance comparison across all four formats. Numbers are planning estimates using public CPM bands; we build the real model on your data and prove the lift with a holdout.
Streaming audio campaign planner
| Format | CPM | Impressions | Completed | Cost / listen | Reach |
|---|
Estimates only. CPMs are public agency planning bands (music ~$15–25, podcast host-read ~$25–40, dynamic insertion/programmatic ~$5–15); completion reflects non-skippable ad-supported audio. Unique reach is impressions divided by frequency and is capped by real audience size in practice. Confirm with live platform quotes.
How to use this planner
Start with the budget you can commit for a month and the length of the flight. Pick the format you are considering — the planner loads a typical CPM for that format, but you should overwrite it with a real quote whenever you have one. Set the average frequency you want against each listener; for most prospecting, three to five exposures over a month is a sensible starting band, and the frequency-cliff begins to bite beyond that. Read the outputs, then scan the comparison table to see how the same money behaves across formats. The point is not to find the cheapest CPM; it is to find the lowest cost per completed, attributable listen for the job you are doing.
RGM Expert Says
The number most brands optimize on streaming audio — CPM — is the sticker price, not the cost. Two formats with the same CPM can deliver very different value once you account for completion, trust, and whether the listen was attributable. A podcast host-read costs more per thousand than a programmatic spot, but it completes high, carries the host’s credibility, and converts a considered purchase that a cheap run-of-network impression never will. The discipline is to plan to cost per completed listen, then prove the incremental lift with a holdout. We use a planner like this to frame the conversation, not to end it — the real model gets calibrated against your own pixel and promo-code data within the first flight.
How the math works
Impressions are your budget divided by the CPM, times one thousand. Completed listens apply a completion rate to those impressions — high for streaming audio because ad-supported spots are non-skippable, slightly lower for dynamically inserted podcast ads. Unique reach divides impressions by your target frequency, which is the average number of times each listener hears the ad; in the real world that reach is capped by the addressable audience on the platform, so treat it as a ceiling. Cost per completed listen is simply budget divided by completed listens — the unit we think you should actually buy on. If you add a companion display banner, the planner estimates clicks at a conservative rate, since the banner rides along with the audio at no extra media cost.
Why cost per completed listen beats a download
A download counts a file request, not a human and not a completion. Streaming audio fixes this: the ad plays, sound-on and unskippable, and you can attribute the listen with a pixel. Planning to cost per completed listen forces the honest comparison — a format that looks cheap on CPM but completes poorly or cannot be attributed is not actually cheap. Pair the plan with measurement: Spotify Ad Analytics and the Spotify Pixel, promo codes and vanity URLs for direct response, and a geo or audience holdout to prove the lift was incremental rather than correlation.
How to read the comparison table
The table runs your exact budget and frequency through all four formats at once, so the trade-off is visible in a single glance. You will almost always see programmatic audio and dynamic-insertion podcasts produce the most impressions and the lowest cost per completed listen — they are the efficiency engines. Host-read podcasts will show fewer impressions at a higher cost per listen, and that is the point: you are paying for a trusted human endorsement and the attention that comes with it, not for raw volume. Music streaming usually lands in the middle, with broad addressable reach and high completion.
Read the table as a portfolio, not a contest. The cheapest cost per listen is rarely the right whole answer, because the formats do different jobs at different stages. A typical strong plan anchors reach and efficiency with music streaming and programmatic, then carves out budget for host-read on the two or three shows whose audience matches your buyer most precisely. Use the planner to size each line, then let a holdout tell you which lines actually drove incremental sales — and shift the next flight’s budget toward whatever cleared that bar.
A note on frequency and waste
Frequency is the quietest lever on this planner and one of the most expensive to get wrong. Raising it shrinks your unique reach for the same budget, because the same impressions land on fewer people more often. A handful of exposures builds memory; far beyond that you are mostly paying to annoy listeners who already heard you. If your unique-reach number looks low for the audience you are trying to build, lower the target frequency before you raise the budget — you will usually buy more new listeners for the same money.
Streaming audio, at a glance
| Format | Typical CPM (est.) | Note |
|---|---|---|
| Music streaming (Spotify, Pandora) | ~$15–$25 | Broad, addressable reach; non-skippable; auction-priced |
| Podcast host-read | ~$25–$40 | Highest trust and recall (~71% vs ~62% non-host) |
| Podcast dynamic insertion (DAI) | ~$10–$20 | Targeted and flexible; now >90% of podcast revenue |
| Programmatic audio | ~$8–$15 | Scale and efficiency across thousands of streams |
| Minimum to start | ~$250 self-serve | Spotify Ads Manager lifetime budget floor |
CPMs are agency planning estimates, not a published rate card; Spotify and most programmatic audio are auction-priced. Sources: IAB/PwC, Edison Research, agency benchmark aggregators, 2025–26.
What audio leaders emphasize
Edison Research’s Share of Ear work shows audio commands more than half of daily US listening yet under three cents of every ad dollar — the underpricing the smartest buyers exploit. Dentsu and Lumen’s attention study found audio delivered more attentive seconds per impression than the cross-media norm and that radio ran roughly ten times more efficient than the average online video ad. And the IAB’s podcast measurement guidelines exist precisely because a download is not a listen. The throughline: buy audio on completed, attributable attention — not on impressions or downloads.