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Cradle

What Cradle does

Cradle (cradle.bio) is an enterprise AI platform for protein engineering that combines (1) generative ML for designing protein sequence candidates and (2) an in-house wet-lab system used to validate and continuously improve the platform’s models. The company positions its product as a “lab-in-the-loop” workflow for scientist teams, aimed at making the design–test–learn cycle faster and more reliable while keeping customer sequences and data private. Cradle supports multiple protein modalities (e.g., antibodies, enzymes, peptides, vaccines) and is designed to optimize multi-property protein trade-offs simultaneously rather than sequentially.

In practice, Cradle’s platform centers around structured “rounds” (campaign steps) that guide users from raw data to lab-ready candidates, with best-practice defaults and traceability (audit/provenance) across datasets, model training, candidate generation, and evaluation. The company also describes workflows for integrating experimental results back into modeling so the system can learn across rounds.

Cradle’s go-to-market focus is enterprise software licensing for biopharma and industrial biology teams, alongside targeted academic programs. The company reports that it serves large pharma customers (including Johnson & Johnson and Novo Nordisk) and that it runs a wet lab in Amsterdam used for internal validation and model improvement before shipping changes to customers.

Strategically, Cradle is scaling platform adoption and customer deployments (including in the US) while expanding both its wet-lab capabilities and its engineering/go-to-market capacity following its later-stage funding. It has also announced enterprise partnerships/collaborations with major pharma companies (e.g., Bayer, Lundbeck) to operationalize its lab-in-the-loop AI approach for antibody and biotherapeutic discovery/optimization.

News

Company record

Aug 11, 2026 · Official · CradleOptimizing across the entire batch is one secret to better proteins

Cradle explains its plate/batch-level optimization philosophy for protein engineering and describes a lab-in-the-loop workflow where batches of 96 or more variants are iteratively tested and used to update models toward a target candidate profile (TCP).

Jul 06, 2026 · Official · CradleFrom picking favorites to designing experiments: how ML rethinks variant selection

Cradle discusses how ML-driven protein engineering changes variant selection thinking, framing a shift from selecting single top candidates toward a decision process designed for optimizing against multiple objectives.

Jun 16, 2026 · Official · CradleIntroducing Guided Rounds

Cradle announces Guided Rounds as a structured approach for running ML-guided protein engineering rounds, describing guided best-practice defaults, traceable decision-making, and support for API-driven extensions by computational teams.

Jun 09, 2026 · Official · CradleZero-shot antibody diversification with Cradle

Cradle describes how its approach supports antibody diversification starting with limited data, including examples of binding improvements and discussion of its evolving pipeline for antibody optimization.

Jun 03, 2026 · Official · CradleLundbeck partners with Cradle to discover and optimize brain disorder treatments

Cradle announces a partnership with Lundbeck to support discovery and optimization of biotherapeutics for brain health, describing a lab-in-the-loop approach and complementing Lundbeck’s broader AI strategy.

Mar 03, 2026 · Official · CradleDrug discovery leader Marcus Schindler joins Cradle’s Advisory Board

Cradle announces that Marcus Schindler has joined its advisory board to support scientific impact and adoption of AI-powered protein engineering across the life sciences industry.

Jan 07, 2026 · Official · CradleBayer and Cradle enter collaboration to enhance AI-enabled antibody discovery and optimization

Cradle announces a collaboration with Bayer in which Cradle provides Bayer antibody scientists full access to its scientific AI platform supporting a lab-in-the-loop approach, design-test-learn cycles, and coordinated execution; Cradle states Bayer selected it after a proof of concept.

Dec 12, 2025 · Official · CradleCradle AI-powered protein engineering platform serving six of top 25 pharma leaders

Cradle reports milestone-driven growth in 2025, including running 50+ projects, powering programs for six of the top 25 big pharma companies, doubling headcount, and expanding operations in the US; it also claims speed and cost improvements for customers.

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What it builds

Cradle platform

Cradle’s enterprise AI software platform for protein engineering that helps scientists generate and evaluate protein sequence candidates in a lab-in-the-loop, multi-property optimization workflow, with wet-lab validated models and audit/provenance tracking across rounds.

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Cradle Guided Rounds

A structured workflow inside Cradle that guides users through best-practice steps for an ML-guided protein engineering campaign (from raw data to lab-ready candidates), aiming to improve consistency and traceability while still allowing detailed control when needed.

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Key metrics

Milestones & partnerships

Aug 11, 2026
Published plate/batch-level optimization explanation tied to its lab-in-the-loop approach

Cradle published a technical/operational explanation emphasizing plate/batch-level optimization and describing iterative assay rounds in high-throughput settings with 96+ variants.

Jun 16, 2026
Launched “Guided Rounds” workflow for consistent ML-guided protein engineering campaigns

Cradle introduced Guided Rounds to encode best practices into the platform for running ML-guided rounds from raw data to lab-ready candidates, targeting more consistent outcomes and traceable decision-making.

Jun 03, 2026
Partnership with Lundbeck for brain-disorder biotherapeutic discovery/optimization

Cradle announced a partnership with Lundbeck describing accelerated design cycles via a closed computation-to-lab loop to reach high-quality antibody candidates with fewer iterations.

Lundbeck
Jan 07, 2026
Partnership/collaboration with Bayer for AI-enabled antibody discovery and optimization

Cradle announced Bayer collaboration in which Cradle provides full access to its scientific AI platform supporting lab-in-the-loop workflows; Cradle states a proof-of-concept selection prior to collaboration.

Bayer
Dec 12, 2025
Reported scaling milestones in 2025 (50+ projects; six of top 25 pharma) and US expansion

Cradle described operational and adoption milestones, including running 50+ projects and powering drug discovery programs for six of the top 25 big pharma companies, alongside doubling headcount and expanding in the US.

Johnson & Johnson · Novo Nordisk
Nov 26, 2024
Raised $73M Series B led by IVP; expanded wet lab and scaling plans

Cradle announced a $73M Series B led by IVP, with Index Ventures and Kindred Capital continuing support; Cradle described scaling initiatives across wet lab, engineering, and go-to-market operations.

IVP · Index Ventures · Kindred Capital
Nov 28, 2023
Raised $24M Series A led by Index Ventures

Cradle announced a $24M Series A, describing onboarded industry partners and ongoing R&D projects across multiple protein modalities and properties.

Index Ventures · Kindred Capital
Nov 17, 2022
Exited stealth with a Seed round (co-led by Index Ventures and Kindred Capital)

Cradle announced exiting stealth and raising €5.5 million ($5.4m) in seed funding, describing the platform’s generative ML approach and an early adopter/design-partner phase.

Index Ventures · Kindred Capital