
Parallel Bio is a biotechnology company that has developed the first platform replicating the human immune system in a dish for drug discovery and development. Their platform uses immune organoids—functioning in-vitro replicas of human lymph nodes—combined with AI and high-throughput automation to design and test immunotherapies that work in humans from the start. This approach transcends traditional animal models, which are poor predictors of human outcomes, enabling faster, cheaper, and more effective drug development with reduced risk and cost. Parallel Bio's technology allows for population-scale testing, modeling diverse human immune responses to create safer and more effective therapies. The company actively collaborates with major pharmaceutical and biotech companies, aiming to transform immunotherapy discovery and accelerate the delivery of treatments for previously untreatable diseases. Founded in 2021 and based in Cambridge, Massachusetts, Parallel Bio leverages cutting-edge bioengineering, machine learning, and robotics to revolutionize drug discovery by providing a clinical trial in a dish.

Parallel Bio is a biotechnology company that has developed the first platform replicating the human immune system in a dish for drug discovery and development. Their platform uses immune organoids—functioning in-vitro replicas of human lymph nodes—combined with AI and high-throughput automation to design and test immunotherapies that work in humans from the start. This approach transcends traditional animal models, which are poor predictors of human outcomes, enabling faster, cheaper, and more effective drug development with reduced risk and cost. Parallel Bio's technology allows for population-scale testing, modeling diverse human immune responses to create safer and more effective therapies. The company actively collaborates with major pharmaceutical and biotech companies, aiming to transform immunotherapy discovery and accelerate the delivery of treatments for previously untreatable diseases. Founded in 2021 and based in Cambridge, Massachusetts, Parallel Bio leverages cutting-edge bioengineering, machine learning, and robotics to revolutionize drug discovery by providing a clinical trial in a dish.
Founded: 2021
Headquarters: Cambridge / Watertown, Massachusetts
Product: Human immune organoids + AI + automation for 'trial-in-a-dish' drug discovery
Recent financing: Series A announced Jun 11, 2025 (lead: AIX Ventures)
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Preclinical immunotherapy discovery and safety prediction where animal models are poor predictors of human immune responses.
2021
Biotechnology
21000000
Series A announced Jun 11, 2025
“Includes venture firms and notable angel/backers such as AIX Ventures, Refactor Capital, Breakout Ventures, Y Combinator, Jeff Dean, and Marc Benioff”