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Odins vs Stella
Stella is a US incrementality and marketing measurement platform for consumer brands: holdout experiments, a media mix model calibrated by them, attribution and post-purchase surveys, self-serve or run by its team. Here is what they do well, and where Odins takes a different route to the same budget question.
Reviewed November 2026 · sources cited on this page
Odins
Managed marketing investment platform
Stella
Incrementality and measurement platform
At a glance
Side by side.
The short version of the whole page. Details and sources below.
Stella facts: stellaheystella.com home, media mix modeling and pricing pages, read November 2026. Where Stella does not state something publicly, the table says so.
Credit first: Stella shows its prices and its model checks.
Few measurement vendors publish a price list. Stella does, and it reports the fit of every model it builds.
- A public price list with four self-serve plans on 30-day terms, and a free plan to start
- Out-of-sample MAPE, R-squared and VIF reported on every model, with forward and back testing
- Holdout results added to the model as anchors, so the response curves are calibrated against real tests
- The choice to run it yourself or have Stella's team run it
Where the data runs thin, the priors carry the answer.
Stella starts from the test: run a holdout, then calibrate the model with it. Odins starts from one model per market and puts its effort into what decides the answer when data is scarce: priors set with your team, offline media in the same model, and a forecast record you can check. That matters most in a market with one national weekly series and a large share of the budget in TV.
- Priors set in 2 to 3 working sessions from your spend history, digital saturation signals and structured interviews
- TV, radio, OOH and print modeled next to digital, with pricing and promotions in the same model
- Forecasts stored before actuals arrive and checked at each monthly retrain, so the model's record is on file
- Data flows in daily and scenarios run any time, in the platform or from Claude via the Odins MCP; the retrain and the reviewed recommendation come monthly
Channel contribution, 80% ranges
from the posteriorA tight range is a decision. A wide range is a test plan, with cost boundaries.
The choice
Who should choose which.
Both model media and both use tests. Choose by where your budget goes and who should run the model.
Choose Stella if
- You are a consumer brand with most of the budget in digital channels and regions you can hold out
- You want to start small, on a published monthly price, and run the tool yourself
- Holdout tests are the evidence your team and your board trust most
Choose Odins if
- Your market has one national weekly series, so how the priors are set decides the answer
- TV, radio, OOH or print carry real budget and belong in the same model as digital
- You want the data work, the model and a reviewed recommendation handled for you, and scenarios you run yourself any time
The honest overlap
Both of us model media, both use tests to tighten the curves, and both have people behind the model. Ask each vendor to show a forecast made before the actuals came in, next to what happened.
Frequently asked questions.
Is Stella a marketing mix model?
Partly. Stella is an incrementality platform with a media mix model as one of five products. The model is built in-house and calibrated with holdout results. Stella's MMM page does not say whether it is Bayesian.
How much does Stella cost?
Stella publishes its prices: a free plan, then 750, 3,000 and 6,000 dollars a month on 30-day terms, with managed engagements priced on request. Odins is a subscription priced for the budget it optimizes, with the team included.
How long until the first model?
Stella does not state a timeline on the pages we read. Odins delivers the first verified model in 4 to 6 weeks from kickoff, data collection and structuring included. When you compare timelines, ask when the clock starts. Vendors who quote shorter timelines usually count from the day your data is already collected and prepared, and often do not offer data collection at all.
Can Odins use the holdout tests we run on Stella?
Yes. Results from geo tests and lift tests are taken into the model. Where the model is uncertain about a channel, we propose a structured test, often a pulse test that varies one channel's spend over weeks, and say what it is expected to cost.
What are the best alternatives to Stella?
It depends on what you need from the model. We compared five options, with sources and who each one fits, on a separate page: the best Stella alternatives. Odins is on the list, and we say so up front.
Marketing spend, modeled like an investment.
A 30-minute walkthrough of the model, the priors and the verification, on your channels.
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