# Cradle

According to OpenAITools.app telemetry verified on 2026-11-11, Cradle (cradle.bio) is an AI platform indexed under AI Design Generator generating 16.99K monthly visits with a month-over-month traffic delta of -4.88K (-22.3%). Its primary geographic market is Netherlands (47.6% traffic share), and it operates on a Contact for Pricing pricing model. Top competing alternatives by monthly volume include Synthace (8.82K visits/mo), Unlearn.AI (17.11K visits/mo), Insight (2.76K visits/mo).

Engineer better proteins, faster, with AI

## Key Telemetry & Specifications

| Metric | Value |
| :--- | :--- |
| Tool Name | Cradle |
| Handle | cradle |
| Status | active |
| Origin | official |
| Maintenance | active |
| Official Domain | cradle.bio |
| Website URL | https://cradle.bio |
| Categories | AI Design Generator, AI Healthcare, AI Research Tool, AI Productivity Tools, AI Models |
| Pricing Model | Contact for Pricing |
| Monthly Visits | 16,993 |
| MoM Traffic Change | -4,877 |
| MoM Growth Rate | -22.3% |
| Primary Market | Netherlands |
| Market Share | 47.6% |
| Direct Visits | 6,214 |
| Organic Search Visits | — |
| Social Visits | — |
| Referral Visits | 1,888 |
| Email Visits | 333 |
| Review Score | 4.5 |
| Saved Count | 2 |
| Supported Platforms | Website |
| Billing Platforms |  |
| Attributes | Pricing: Contact for Pricing; Features: Website |
| Tags | Protein engineering, AI, Machine learning, Protein design, Protein optimization, Antibody engineering, Enzyme engineering, Peptide engineering, Vaccine development, Data analysis, Drug discovery |

## Overview

Cradle is a protein engineering platform that applies machine learning to the design and optimization of proteins. Instead of optimizing one property at a time, teams use Cradle to work on potency, specificity, expression, thermostability, and manufacturability simultaneously — compressing the number of experimental rounds needed to reach a candidate that meets a target profile.

The platform covers a broad range of protein classes, including antibodies for ADC and multispecific formats, enzymes that need to hold up in hostile conditions, vaccine antigens that must keep their shape outside the lab, and peptides that need potency within tight constraints even from small datasets. It works whether or not a starting protein already exists, and it learns from the customer's own experimental data, including results from previous failed campaigns, so each design round is better informed than the last.

Cradle is positioned for multiple roles in an organization: experimental scientists get point-and-click candidate design and optimization; computational scientists get the same functionality exposed through an API for scripting and integration; and R&D leadership gains a compounding advantage from every experiment their teams have run. Security is a stated priority, with ISO 27001 and SOC 2 Type II certification and hosting on Google Cloud. Pricing is not published — interested teams discuss their project with Cradle to get terms.

## Pricing & Plans

Pricing is not publicly listed. Cradle uses a contact-for-pricing model where teams discuss their project and program scope directly with the company; a licensing track and API access are offered alongside the core platform.

## Key Features & Capabilities

- **De novo protein design:** Start from a target or your own sequence and have Cradle design an optimized plate of candidates informed by your data and domain knowledge.
- **Parallel multi-property optimization:** Improve efficacy, developability, and manufacturability in parallel rather than one property at a time, compressing time to a target profile.
- **Closed-loop learning from experimental data:** Every round incorporates results from the previous one, so experimental data compounds across campaigns and prior failed programs stay useful.
- **Full API access:** Everything in the web application is exposed through the API, so computational teams can script campaigns and wire Cradle into existing pipelines.
- **Enterprise-grade security and compliance:** ISO 27001 and SOC 2 Type II certified, hosted on Google Cloud with data isolation and continuous monitoring for enterprise deployments.

## Primary Use Cases

- **Antibody maturation and developability (Antibody engineer):** Mature antibodies that are developable and quiet on immunogenicity, including ADC and multispecific formats, while holding potency targets.
- **Stabilizing industrial enzymes (Enzyme engineer):** Improve thermostability and activity of enzymes so catalytic conversions hold up in industrial or otherwise hostile conditions.
- **Vaccine antigen design (Vaccine researcher):** Design antigens that maintain their shape outside the lab, supporting vaccine programs and work on biologics that traditionally require scarce raw materials.
- **Peptide optimization from small data (Peptide scientist):** Reach potency within tight sequence or stability constraints even when only small datasets are available.

## Strengths

- Optimizes multiple protein properties in parallel rather than sequentially, which can cut the number of experimental rounds
- Learns from a customer's own experimental data, including negative and failed results
- Covers antibodies, enzymes, vaccines, and peptides in one platform
- Full API parity with the web app supports computational and automated workflows
- ISO 27001 and SOC 2 Type II certified on Google Cloud infrastructure

## Limitations

- No self-serve trial or published pricing, so evaluation requires a sales conversation
- Requires in-house experimental capability to generate the assay data that drives the models
- Cost and onboarding are geared to organizations rather than individual researchers

## Frequently Asked Questions

### Who is Cradle built for?
Cradle is aimed at protein engineering teams in biotech, pharma, and academia working on antibodies, enzymes, peptides, vaccines, and other proteins. It supports both bench scientists through a point-and-click interface and computational teams through a full API.

### How much does Cradle cost?
Pricing is not published; you request a demo and discuss your project with the Cradle team, which then proposes terms based on your program scope and usage. This contact-for-pricing approach is standard for enterprise biotech platforms.

### How is customer data protected?
Cradle reports being ISO 27001 and SOC 2 Type II certified, running on Google Cloud infrastructure with data isolation, technical controls, continuous monitoring, and access restricted to users the customer authorizes.

### Does Cradle learn from my own lab data?
Yes. Cradle learns from your experimental data, including prior failed rounds, and uses it to propose better candidates in subsequent rounds. It also publishes benchmarks and case studies from its own lab, including results on therapeutic peptides, VHH binders, enzymes, and IgG candidates.

### What is Cradle's monthly traffic and growth trend?
Cradle currently receives 16.99K monthly visits, with a month-over-month traffic change of -4.88K (-22.3% growth rate). Its primary source market is Netherlands (47.6% share), including 6.21K direct visits/mo and — organic search visits/mo.

### Is Cradle free? What is its pricing model?
Cradle operates on a Contact for Pricing pricing model. Pricing is not publicly listed. Cradle uses a contact-for-pricing model where teams discuss their project and program scope directly with the company; a licensing track and API access are offered alongside the core platform. Supported billing and checkout platforms include: not listed.

### What are the best Cradle alternatives in 2026?
Based on OpenAITools.app category traffic and feature fit, the top five alternatives to Cradle are: 1. Synthace (8.82K visits/mo); 2. Unlearn.AI (17.11K visits/mo); 3. Insight (2.76K visits/mo); 4. Intelligencia AI (3.87K visits/mo); 5. Database Sample (35.34K visits/mo).

### Which platforms and core AI capabilities does Cradle support?
Cradle is classified under AI Design Generator, AI Healthcare, AI Research Tool, AI Productivity Tools, supports the following platforms: Website, and its core capability tags include: Protein engineering, AI, Machine learning, Protein design, Protein optimization, Antibody engineering.

## Alternatives

| Tool Name | Monthly Visits | Pricing Model | Compare |
| :--- | :--- | :--- | :--- |
| [Synthace](https://openaitools.app/tool/synthacegpt) | 8,817 | Contact for Pricing | [Compare](https://openaitools.app/compare/cradle-vs-synthacegpt) |
| [Unlearn.AI](https://openaitools.app/tool/unlearn-ai) | 17,107 | Contact for Pricing | [Compare](https://openaitools.app/compare/cradle-vs-unlearn-ai) |
| [Insight](https://openaitools.app/tool/insight) | 2,761 | Free | [Compare](https://openaitools.app/compare/cradle-vs-insight) |
| [Intelligencia AI](https://openaitools.app/tool/intelligencia-ai) | 3,872 | Contact for Pricing | [Compare](https://openaitools.app/compare/cradle-vs-intelligencia-ai) |
| [Database Sample](https://openaitools.app/tool/open-source-database-designs) | 35,340 | Freemium | [Compare](https://openaitools.app/compare/cradle-vs-open-source-database-designs) |
| [Citrine Informatics](https://openaitools.app/tool/citrine-io) | 7,770 | Contact for Pricing | [Compare](https://openaitools.app/compare/citrine-io-vs-cradle) |
| [January AI](https://openaitools.app/tool/january-ai) | 10,183 | Free, Contact for Pricing | [Compare](https://openaitools.app/compare/cradle-vs-january-ai) |
| [Dr.Oracle](https://openaitools.app/tool/dr-oracle) | 723,847 | Free Trial | [Compare](https://openaitools.app/compare/cradle-vs-dr-oracle) |
| [Empirical Health](https://openaitools.app/tool/empirical-health) | 70,517 | Paid | [Compare](https://openaitools.app/compare/cradle-vs-empirical-health) |
| [evidencepartners.com](https://openaitools.app/tool/evidencepartners-com) | 8,776 | Paid, Contact for Pricing | [Compare](https://openaitools.app/compare/cradle-vs-evidencepartners-com) |
| [Uizard](https://openaitools.app/tool/uizard) | 294,618 | Freemium | [Compare](https://openaitools.app/compare/cradle-vs-uizard) |
| [Quilter](https://openaitools.app/tool/quilter) | 49,305 | Freemium, Contact for Pricing | [Compare](https://openaitools.app/compare/cradle-vs-quilter) |

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Source: https://openaitools.app/tool/cradle