Keen vs rex by AureliaX

Keen is an AI-native marketing operating system for measuring media spend, building weekly buying plans, and forecasting the likelihood of reaching business goals. Its approach uses Bayesian econometrics, informed priors, and pre-built response curves that Keen says update as data grows. The platform says it separates marketing lift from external macroeconomic shifts, measures ROI across brand and commerce, and can quantify long-term brand effects. Its plans connect measurement to revenue and profit goals and can account for seasonality, media costs, budget floors, and inventory limits. Forecasts include goal probabilities, revenue ranges, and risk analysis; Keen claims up to 95% accuracy. Access options include SaaS, an MCP and headless API, or a managed service. The API can bring benchmarks, priors, plans, and forecasts into existing tools and receive actual results to trigger replanning. Keen lists integrations with 275+ tools and partners, including HubSpot, AWS, Snowflake, Meta, Google, TikTok, and Shopify. Pricing is on request, and a 14-day trial is listed.

rex by AureliaX is a Marketing Mix Modelling platform for measuring and improving marketing performance across online and offline channels. Bayesian machine-learning models test starting assumptions against two to three years of historical data. Response curves and scenario planning support recommended budget allocations, while the platform provides budget planning, forecasting and ROI reporting. Users can inspect model components, confidence intervals, initial assumptions and how incoming data changed them. rex connects to more than 500 marketing platforms, including Google Ads, Meta, TikTok, Snapchat, LinkedIn and Pinterest. For offline channels without APIs, templates accept weekly or monthly spend and reach figures. Recommendations are updated monthly and reviewed by the maker’s team. Onboarding typically includes two or three sessions and a monthly review. The service is available through web and API access. Its maker describes it as GDPR-compliant and privacy-first and says it does not rely on user-level cookies. Pricing is tailored to business needs, users and modules, with pilot programs for strategic partners.