
ClearBrain is a causal analytics platform that uses AI to differentiate between causation and correlation in user behavior. Their technology simulates A/B tests on historical data to identify the causal effect of user actions. The platform allows users to predict lift without A/B testing, forecast KPIs, and build audiences with high lift potential for activation across various channels. ClearBrain was acquired by Amplitude, Inc. in March 2020, integrating its self-serve causal technology into Amplitude's product analytics platform. The company is recognized for its patent-pending technology in generalized causal inference.

ClearBrain is a causal analytics platform that uses AI to differentiate between causation and correlation in user behavior. Their technology simulates A/B tests on historical data to identify the causal effect of user actions. The platform allows users to predict lift without A/B testing, forecast KPIs, and build audiences with high lift potential for activation across various channels. ClearBrain was acquired by Amplitude, Inc. in March 2020, integrating its self-serve causal technology into Amplitude's product analytics platform. The company is recognized for its patent-pending technology in generalized causal inference.
What they do: Causal analytics platform that simulates A/B tests on historical data to estimate causal lift and forecast KPIs
Founded / HQ: 2016; Palo Alto, California
Exit: Acquired by Amplitude in March 2020
Known funding: Seed rounds totaling about $3.24M (multiple 2018–2019 seed raises)
Marketing and product analytics—identifying causal drivers of user behavior and creating audiences for activation.
2016
Analytics / Marketing Technology
1200000.00
Reported seed raise; syndicate included YC, Pear VC, Industry Ventures and others.
Crunchbase lists an Apr 30, 2018 seed round led by Harrison Metal.
2000000.00
Reported additional $2M raise in August 2019.
“Raised seed funding from institutional seed investors including Pear VC, Harrison Metal, and Menlo Ventures; also backed by angel investors.”