Best marketing mix modeling software in 2026: five platforms, the free libraries, and who each suits
Five marketing mix modeling platforms: Measured for enterprise brands, Sellforte for retail and ecommerce, Recast for planning on a Bayesian model, MASS Analytics for modeling inside your data warehouse, and Cassandra for measurement and the work in one system. The main free options are Robyn, Meridian and PyMC-Marketing.
We are Cassandra, one of the five, and we wrote this page. The order is not a verdict.
How these were chosen
- The rule: well-known vendors whose own sites describe a marketing mix modeling product.
- The pick: four, plus us. Many others sell marketing mix modeling, and several are good.
- The order: no order of merit.
Cassandra
An AI marketing brain for growth teams. It learns what drives growth and does the work within the rules the team sets.
A Bayesian marketing mix model checked by live geo experiments. Every move is checked against its forecast.
Start for free with your website and data, or book a demo. Paid plans scale with yearly ad spend.
Best for growth teams and agencies that decide what waits for approval.
A channel needs enough spend history and variation to read. Geo experiments need regional structure. Tests take a few weeks.
Measured
Their own words: the AI-powered marketing effectiveness platform trusted by enterprise brands.
Describes a causal media mix model calibrated with incrementality tests as Bayesian priors, plus automated geo and audience split experiments.
Pricing is quoted on request, through a demo.
Best for enterprise brands wanting a model and experiments from one vendor.
Their stated focus is enterprise and complex businesses.
Sellforte
Their own words: the Measurement & Optimization OS for Retail and Ecommerce.
Describes a Bayesian model fed by geo and conversion lift experiments, Sellforte Pixel attribution, and daily incremental ROAS by campaign and ad set.
Four plans from $1,900 to $8,500 a month plus customizations, at $300,000 of monthly media spend, as listed on 12 October 2026.
Best for retail or ecommerce teams wanting daily campaign and ad-set reads with attribution.
Their stated focus is retail and ecommerce, including DTC brands.
Recast
Their own words: marketing planning & analysis infrastructure, powered by a proprietary Bayesian MMM.
Describes a Bayesian model with time-varying ROIs, GeoLift by Recast for geo experiments, and forecasting, planning and scenario tools.
The model is sold through a demo. GeoLift by Recast lists a six-month free trial, as listed on 12 October 2026.
Best for marketing and finance teams planning on a Bayesian model, checked with geo experiments.
Their stated focus is marketing teams managing large budgets.
MASS Analytics
Their own words: Always-ON Marketing Mix Modeling on the MassTer platform, for brands and agencies.
Describes continuously refreshed modeling calibrated by randomised geo experiments, running natively on Snowflake, BigQuery and Databricks.
Pricing is quoted on request, through a demo. Options go from done-for-you to run-it-yourself.
Best for organisations whose data lives in Snowflake, BigQuery or Databricks.
Their stated focus is measurement that runs inside your own data environment, so your data never leaves it.
The free open-source libraries
Free code, so each needs a data team to run it.
- Robyn, from Meta: experimental, semi-automated ridge regression in R, Python in beta. Best for a fast, automated start.
- Meridian, from Google: Bayesian, built for geo-level data and experiment calibration. Best for Python teams modeling many regions.
- PyMC-Marketing, from PyMC Labs: a Bayesian Python library with lift-test calibration. Best for the most control.
Where the five differ
- Experiments: all five describe geo experiments on their own pages.
- Attribution: Sellforte offers its own through Sellforte Pixel. MASS Analytics reconciles MMM, MTA and incrementality. Cassandra checks attribution against measured lift.
- Grain: Sellforte reports daily by campaign and ad set. Cassandra measures each channel, campaign and ad.
- Access: Sellforte publishes prices, Recast a GeoLift price, and Cassandra starts free. Measured and MASS Analytics invite a demo.
How to choose between them
Start with who has to accept the numbers.
- Only your team: whichever reaches a first useful result fastest.
- A data team: a model they can inspect, with stated assumptions.
- Finance or a board: results traced back to a method.
- Readiness: two or more years of weekly data, with movement in each channel's spend.
What no tool does for you
- History: no model creates it. Each channel needs enough, with movement in its spend.
- Ownership: someone still owns the decision.
- Cause and effect: experiments separate a channel that drove sales from one that moved with them.
What this page does not do
- No product tests. Vendor claims come from their own pages, read on 12 October 2026.
- No ranking, not complete. Many other vendors sell marketing mix modeling.
- It ages. Out of date? Write to hello@cassandra.app.
Cassandra is an AI marketing brain for growth teams: a Bayesian marketing mix model checked by live geo experiments, doing the work within the rules the team sets. Start for free with your website and data, or book a demo.
How to decide
- Enterprise, model and experiments from one vendor: Measured.
- Retail or ecommerce, daily reads: Sellforte.
- Plans shared with finance: Recast.
- Data in your warehouse: MASS Analytics.
- Measurement and the work, within your rules: Cassandra.
- A data team wanting full control: a free library.
Questions
Which marketing mix modeling software is best?
It depends on the buyer: Measured for enterprise brands, Sellforte for retail and ecommerce, Recast for planning, MASS Analytics for modeling in your warehouse, Cassandra for measurement and the work.
Is there free marketing mix modeling software?
Yes. Robyn from Meta, Meridian from Google and PyMC-Marketing from PyMC Labs are free open-source libraries. They need a data team to run them.
How were these five chosen?
Four well-known vendors whose own sites describe a marketing mix modeling product, plus us. A shortlist, not a ranking.
Which of these publish pricing?
As checked on 12 October 2026: Sellforte lists plan prices and Recast a GeoLift price. Measured and MASS Analytics invite you to book a demo. Cassandra starts free.
Is this list biased?
We wrote it and we are on it. Against that: a stated way of picking, no ranking, and vendors' own pages as sources.
Do these platforms run geo experiments?
Yes. All five describe geo experiments on their own pages, from Measured's geo-matched market holdout tests to Cassandra's live geo experiments.