rex by AureliaX
rex by AureliaX is a Marketing Mix Modelling platform for assessing marketing performance across online and offline channels and guiding budget decisions.
What rex by AureliaX is
rex by AureliaX is a Marketing Mix Modelling platform for assessing marketing performance across online and offline channels and guiding budget decisions. It uses Bayesian ML models, response curves, and scenario planning, with starting assumptions checked against 2–3 years of historical data. Teams can inspect model components, confidence intervals, initial assumptions, and the effect of data on those assumptions. rex supports budget planning, forecasting, scenario planning, and ROI reporting. The maker says it connects to 500+ marketing platforms, including Google Ads, Meta, TikTok, Snapchat, LinkedIn, and Pinterest. For offline channels without APIs, templates allow teams to enter weekly or monthly spend and reach. Recommendations are updated monthly and reviewed by the rex team, and onboarding typically includes 2–3 sessions and a monthly review. Available through the web and API, rex is designed for mid-market and enterprise organizations. Its maker describes it as GDPR-compliant and privacy-first, and says it does not use user-level cookies. Pricing is on request.
Good
- Supports budget planning, forecasting, and ROI reporting.
- Uses response curves and scenario planning for budget allocations.
- Connects to 500+ marketing platforms, according to the maker.
- Offers templates for offline spend and reach data.
- Users can inspect model components and confidence intervals.
Watch out
- Pricing is available on request.
- Modelling tests assumptions against 2–3 years of historical data.
- Recommendations are updated monthly.
Who it suits
It suits mid-market and enterprise marketing, finance, and leadership teams that need to assess channels and plan budgets. Its use of historical data and offline-channel templates may fit organizations with both online and offline marketing activity.
Verdict
rex combines marketing measurement with budget planning across online and offline channels. Consider its historical-data requirement and request pricing details to assess fit.
Plans and prices
From rex by AureliaX's own pricing page, checked 7 Oct 2026.
| Plan | Price | What it gives you |
|---|---|---|
| Tailored pricing | Priced on request | Customized to business needs, users, and modules · Pilot program offers for strategic partners · Dedicated onboarding and support |
The facts
Each one read from rex by AureliaX's own pages, with the date it was checked.
What it does
- Budget optimization
- The platform uses response curves and scenario planning to recommend budget allocations.checked 7 Oct 2026
- Data integrations
- The maker says rex connects to 500+ marketing platforms, including Google Ads, Meta, TikTok, Snapchat, LinkedIn, and Pinterest.checked 7 Oct 2026
- Intended users
- rex is designed for mid-market and enterprise companies, including marketing, finance, and leadership teams.checked 7 Oct 2026
- Modelling
- rex uses Bayesian ML models and tests starting assumptions against 2–3 years of historical data.checked 7 Oct 2026
- Notable data requirement
- The maker says its modelling process tests assumptions against 2–3 years of historical data.checked 7 Oct 2026
- Offline channels
- For channels without APIs, rex provides templates for entering weekly or monthly spend and reach data.checked 7 Oct 2026
- Privacy
- The maker says rex does not rely on user-level cookies and describes the platform as GDPR-compliant and privacy-first.checked 7 Oct 2026
- Transparency
- The maker says users can inspect model components, confidence intervals, starting assumptions, and how data changed them.checked 7 Oct 2026
- Updates and support
- The maker says recommendations are updated monthly and reviewed by its team; onboarding typically includes 2–3 sessions and a monthly review.checked 7 Oct 2026
- What it does
- rex is a Marketing Mix Modelling platform for measuring and optimizing marketing performance across online and offline channels.checked 7 Oct 2026
The company
- Founded
- 2023checked 28 Sep 2026
- Headquarters
- Amsterdam, Netherlandschecked 28 Sep 2026
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