Can I use Vertex AI Agent Builder and Rasa together?

Yes, many teams use both tools together for different purposes. Use the Stack Builder section above to combine Vertex AI Agent Builder and Rasa with other tools and save your AI toolkit.

Does Vertex AI Agent Builder or Rasa have a free plan?

Vertex AI Agent Builder is available for free with a free trial. Rasa is a paid tool. Always verify current pricing directly with the vendor.

Vertex AI Agent Builder vs Rasa

Comprehensive side-by-side comparison — features, pricing, performance, and more.

Updated June 2026

Vertex AI Agent Builder

Google Cloud

Build and deploy generative AI agents and multi-agent systems on Google Cloud

0.0(0)

FREEMIUM

91% data quality

Rasa

Rasa Technologies

Build AI agents you can trust to handle real world complexity

0.0(0)

OPEN_SOURCE

95% data quality

Trust & Reliability

Vertex AI Agent Builder

Users:100K-1M

Customers (per vendor):Snap, Volkswagen, PUMA +7

HIPAA

Rasa

Too Close to Call

Rasa (7.5) vs Vertex AI Agent Builder (7.2) — difference of 0.3 points

AI Comparison Summary

Vertex AI Agent Builder

7.2

avg score

Rasa

7.5

avg score

Rasa leads overall — particularly in Customizability.

Based on 6 dimensions

How scores are calculated

Overall Winner

Rasa

7.5 / 10

Vertex AI Agent Builder

Best For

Building and deploying generative AI applications for enterprises

Architecting complex multi-agent systems for various use cases

Improving customer service with virtual agents and conversational AI

Accelerating developer productivity with AI-powered tools

Not Ideal For

Users seeking a simple, no-code, standalone AI agent solution outside of Google Cloud

Small businesses with no existing Google Cloud infrastructure or technical team

Users who prefer open-source frameworks for agent development and full self-hosting

Rasa

Best For

Building high-trust AI agents for customer support

Automating sales enablement processes

Enhancing operational efficiency with internal AI agents

Developing secure and compliant AI experiences for regulated industries

Not Ideal For

Non-technical users seeking a simple, out-of-the-box chatbot solution

Individuals or small teams without development resources for self-hosting

Users looking for a fully managed SaaS solution without any infrastructure involvement

* Verdict is based on our algorithmic scoring of publicly available data. Learn about our methodology

Vertex AI Agent Builder is best for

🤖Automation & Agents7.7

Rasa is best for

✍️Writing & Content8.0💬Chat & Conversation8.0🤖Automation & Agents8.0

Filter by your use case:

Pros & Cons

Vertex AI Agent Builder

Pros

Fully managed AI development platform by Google Cloud
Extensive access to a wide range of foundation models (200+)
Deep integration with the broader Google Cloud ecosystem
Supports the architecture and orchestration of multi-agent systems
Offers free credits and a free tier for new customers to get started
Leverages Google's robust security and infrastructure

Cons

Requires familiarity with the Google Cloud ecosystem
Pricing can be complex and usage-based, varying by specific product consumption
May require technical expertise for advanced agent development and deployment
Not suitable for users seeking a simple, standalone, no-code agent builder outside of a cloud environment

Rasa

Pros

Provides full control over AI agent behavior and performance
Supports deployment on-premise or in private cloud for data sovereignty
Offers a flexible development experience for technical and business teams
Enables faster responses and cost-efficient operations compared to LLM-first frameworks
Includes enterprise-grade security features like PII data management and secrets management
Open-source core allows for extensive customization and community support

Cons

Requires technical expertise for advanced customization and deployment
Enterprise features and premium support require a paid subscription
No explicit mention of a visual drag-and-drop interface for non-technical users in the core platform
Limited to conversational AI use cases, not a general-purpose AI platform
No explicit mention of specific LLM models included, users bring their own

Weighted Score — Adjust What Matters to You

Pick a profile or drag sliders — scores and radar update instantly on the right.

Quick profiles:

Ease of Use5

Output Quality5

Value for Money5

Customizability5

Support & Ecosystem5

Integration Power5

Dimension Comparison

Vertex AI Agent Builder

7.2

/ 10

Rasa

7.5

/ 10

Your pick

Dimension Breakdown

Ease of Use

How easy it is to get started and use daily

Vertex AI Agent Builder

6.0

Rasa

6.0

Output Quality

Quality and accuracy of generated results

Vertex AI Agent Builder

8.0

Rasa

8.0

Value for Money

Cost vs. features and output quality

Vertex AI Agent Builder

7.0

Rasa

7.0

Customizability

Calculated

Ability to tailor to specific needs

Vertex AI Agent Builder

5.0

Rasa

9.0▲ +4.0

Support & Ecosystem

Documentation, community, and support quality

Vertex AI Agent Builder

9.0▲ +1.0

Rasa

8.0

Integration Power

Calculated

Ability to connect with other tools and workflows

Vertex AI Agent Builder

8.0▲ +1.0

Rasa

7.0

Calculated = derived from verified integration count and API/open-source signals. AI = LLM-assessed from public website content. Methodology

Data is sourced from public information and vendor websites. It may not always be up-to-date — verify pricing and features directly with the vendor before purchasing.Report inaccuracy

Frequently Asked Questions

Which is better, Vertex AI Agent Builder or Rasa?

Both are strong options. Vertex AI Agent Builder has a rating of 0.0/5 (0 reviews), while Rasa has a rating of 0.0/5 (0 reviews). The best choice depends on your specific use case, budget, and workflow requirements.

Is Vertex AI Agent Builder cheaper than Rasa?

Vertex AI Agent Builder starts at free (freemium model) with a free trial. Rasa starts at free (open_source model). Use the Cost Calculator above for a detailed estimate.

What are the main differences between Vertex AI Agent Builder and Rasa?

Vertex AI Agent Builder — "Build and deploy generative AI agents and multi-agent systems on Google Cloud". Rasa — "Build AI agents you can trust to handle real world complexity". Key differences include their pricing models, platform support, integrations, and technical capabilities. See the Feature Comparison table above for a complete side-by-side breakdown.

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