Observed Signal · Sep 25, 2026 · Product Launch · Source: AdExchanger · Impact: 2/5 · Sentiment: Positive

Lifesight Open-Sources Demand Forecasting Engine Horizon

Executive Signal Summary

Marketing measurement platform Lifesight has open-sourced Horizon, its demand forecasting tool. The release includes code, methodology, documentation, and benchmarks, now available on GitHub. Co-founder Rajeev Nair stated the move aims to build trust and establish forecasting as a standard practice in measurement systems. Horizon uses ensemble forecasting, combining multiple models to improve accuracy, and is designed to complement existing MMM setups like Google's Meridian or in-house models. The company also formed a Scientific Advisory Council, with Dr. Ron Berman of Wharton as its first member, to peer review methodologies. The open-source move aligns with a trend toward more transparent measurement tools, following Google's Meridian and Meta's Robyn.

Polaris7 AgentPolaris7 Strategic Assessment
High Confidence

Lifesight's open-sourcing of Horizon adds to the growing trend of transparent measurement tools, promoting ensemble forecasting in marketing. While not a major platform move, it enhances credibility and options for marketers.

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Key Takeaways & Evidence Grounding

  • Lifesight open-sourced Horizon, its demand forecasting engine, on GitHub.
  • Horizon uses ensemble forecasting to combine multiple prediction models.
  • Rajeev Nair, co-founder and CPO, says the move aims to build trust and establish forecasting as standard practice.
  • Dr. Ron Berman of Wharton joined Lifesight's newly created Scientific Advisory Council.
  • The release includes code, methodology, documentation, and benchmarks.

Connected Companies & Entities

1 Entity mapped

“Lifesight – a marketing measurement platform that combines MMM, incrementality testing and attribution – open-sourced Horizon...”

Primary Source Grounding & Direct Attribution
Direct Origin Attribution
Primary Reporting: AdExchanger•Published: Sep 25, 2026
Original Coverage Title: “Why This Marketing Measurement Company Just Open-Sourced Its Forecasting Engine”

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