# Cradle vs Rayyan

Cradle records 16,993 monthly visits with -22.3% month-over-month growth and Contact for Pricing pricing. Rayyan records 1,116,437 monthly visits with +7.9% growth and Freemium pricing.

| Metric | [Cradle](https://openaitools.app/tool/cradle) | [Rayyan](https://openaitools.app/tool/rayyan) |
| :--- | :--- | :--- |
| Website URL | https://cradle.bio | https://www.rayyan.ai |
| Categories | AI Design Generator, AI Healthcare, AI Research Tool, AI Productivity Tools | AI Research Tool, AI Productivity Tools, AI Project Management, AI Workflow |
| Pricing Model | Contact for Pricing | Freemium |
| Monthly Visits | 16,993 | 1,116,437 |
| MoM Growth Rate | -22.3% | +7.9% |
| Primary Market | Netherlands | United States |
| Direct Visits | 6,214 | 677,880 |
| Review Score | 4.5 | 4.5 |
| Saved Count | 2 | 1 |
| Supported Platforms | Website | Website |

## Cradle

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.

- **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.

**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

**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

[Profile (Markdown)](https://openaitools.app/tool/cradle.md)

## Rayyan

Rayyan is a dedicated platform for systematic literature reviews and evidence synthesis, used by more than a million researchers at tens of thousands of institutions across over 190 countries. Rather than being a general reference manager, it maps directly onto the standard review pipeline: importing references from multiple sources, organizing them into a library, inviting collaborators with defined roles, deduplicating the corpus, and then working through title and abstract screening followed by full-text screening with conflict resolution.

The AI layer centers on ResearchPilot, which provides zero-shot relevance ratings, an AI Analyzer, an AI Reviewer, and automated data extraction designed to be dramatically faster than manual workflows. Rayyan also ships a Systematic Auto-Resolver that can deduplicate up to 200,000 references based on your own protocol in a single action, plus a mobile app that lets reviewers screen studies on the go or even offline. Small productivity touches like programmable hot keys and randomized data sampling help teams divide large workloads without losing coordination.

Beyond screening, Rayyan covers the back half of a review too. Teams define structured data extraction fields, apply PICO frameworks to structure evaluation, capture study-level data, assess Risk of Bias with dedicated tooling, and generate PRISMA flow diagrams for publication. A strong emphasis on auditability and transparency means every decision is traceable and reproducible. An API is available to extend Rayyan beyond the interface, and pricing runs from a generous free tier for basic use up to enterprise plans for institutional research programs.

**Pricing & Plans:** Free forever for basic use with no credit card required, making core screening and deduplication accessible to individual researchers. Paid and enterprise plans unlock advanced capabilities such as ResearchPilot, Risk of Bias, and institutional features; pricing details are available on the site and through sales.

- **Automatic deduplication:** The Systematic Auto-Resolver deduplicates up to 200,000 references using your own inclusion and exclusion protocol with one click.
- **ResearchPilot AI:** ResearchPilot delivers zero-shot relevance ratings, an AI Analyzer, an AI Reviewer, and auto-extraction to speed up search, screening, and data capture.
- **Screening and conflict resolution:** Work through title, abstract, and full-text screening with inclusion and exclusion tagging, conflict resolution, and blinded reviewer modes.
- **Data extraction and PRISMA reporting:** Capture structured study data with configurable extraction fields, apply PICO frameworks, and export results with auto-generated PRISMA diagrams.
- **Collaboration and scalability:** Randomly sample subsets, divide workloads, manage roles, and screen offline via the mobile app, with full audit trails for reproducibility.

**Strengths:** Covers the full systematic review workflow from import to PRISMA export; ResearchPilot AI speeds up search, screening, and extraction; Deduplicates up to 200,000 references from your own protocol; Offline-capable mobile app for screening anywhere

**Limitations:** Full-text screening workflows still demand significant reviewer time; Some advanced AI capabilities are aimed at enterprise and institutional plans; Requires structuring your review protocol to get the most from automation

[Profile (Markdown)](https://openaitools.app/tool/rayyan.md)

## Frequently Asked Questions

### How do Cradle and Rayyan compare in monthly traffic?

Cradle has 16,993 monthly visits, while Rayyan has 1,116,437. Traffic estimates describe audience size, not product quality.

### How do their growth rates compare?

Cradle has a month-over-month growth rate of -22.3%; Rayyan has +7.9%.

### How does pricing compare?

Cradle: Contact for Pricing. 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. Rayyan: Freemium. Free forever for basic use with no credit card required, making core screening and deduplication accessible to individual researchers. Paid and enterprise plans unlock advanced capabilities such as ResearchPilot, Risk of Bias, and institutional features; pricing details are available on the site and through sales.

## Alternatives

| # | Tool Name | Monthly Visits | MoM Growth Rate | Pricing Model | Summary | Profile (Markdown) |
| :--- | :--- | :--- | :--- | :--- | :--- | :--- |
| 1 | [Semantic Scholar](https://openaitools.app/tool/semantic-scholar) | 8,198,672 | +5.8% | Free | Provides a completely free and open academic search database, but lacks collaborative literature review screening tools. | [.md](https://openaitools.app/tool/semantic-scholar.md) |
| 2 | [Consensus](https://openaitools.app/tool/consensus) | 6,014,388 | -1.2% | Freemium | Great for finding scientific agreement and evidence-backed answers, but lacks dedicated screening queues and systematic review extraction forms. | [.md](https://openaitools.app/tool/consensus.md) |
| 3 | [SciSpace](https://openaitools.app/tool/scispace) | 4,464,111 | +8.6% | Freemium | Excellent for reading, chatting with, and summarizing individual papers, but less structured for multi-reviewer systematic review screening. | [.md](https://openaitools.app/tool/scispace.md) |
| 4 | [Elicit](https://openaitools.app/tool/elicit) | 1,751,507 | +3.1% | Freemium | Stronger automated data extraction and evidence synthesis from papers, but less focused on collaborative title and abstract screening workflows. | [.md](https://openaitools.app/tool/elicit.md) |
| 5 | [Scite](https://openaitools.app/tool/scite) | 841,974 | +1.1% | Free Trial, Contact for Pricing | Offers powerful citation analysis and smart citation metrics, but is less tailored for full PRISMA systematic review workflows. | [.md](https://openaitools.app/tool/scite.md) |
| 6 | [ResearchRabbit](https://openaitools.app/tool/researchrabbit) | 831,571 | +3.1% | Free | Visualizes citation networks and paper relationships wonderfully, but lacks Rayyan's screening, tagging, and exclusion tracking features. | [.md](https://openaitools.app/tool/researchrabbit.md) |
| 7 | [Connected Papers](https://openaitools.app/tool/connected-papers) | 750,576 | +3.1% | Freemium | Provides intuitive visual maps of academic literature connections, but doesn't support systematic review screening or data extraction. | [.md](https://openaitools.app/tool/connected-papers.md) |
| 8 | [Dr.Oracle](https://openaitools.app/tool/dr-oracle) | 723,847 | -1.2% | Free Trial | Guideline-directed medical answers with citations, built for clinicians | [.md](https://openaitools.app/tool/dr-oracle.md) |
| 9 | [Paperguide](https://openaitools.app/tool/paperguide) | 371,972 | -2.9% | Freemium | Provides solid literature search and reference management tools, but lacks Rayyan's specialized collaborative screening interface. | [.md](https://openaitools.app/tool/paperguide.md) |
| 10 | [Uizard](https://openaitools.app/tool/uizard) | 294,618 | -15% | Freemium | AI-powered UI design and prototyping for product teams | [.md](https://openaitools.app/tool/uizard.md) |

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Source: https://openaitools.app/compare/cradle-vs-rayyan

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