Vertex AI Agent Builder release notes

Updated pricing for Vertex AI Agent Engine: Starting on November 6, 2025, Vertex AI Agent Engine Runtime will start charging for runtime usage for the following regions:

• asia-southeast1 (Singapore)
• australia-southeast2 (Melbourne)
• europe-west2 (London)
• europe-west3 (Frankfurt)
• europe-west4 (Netherlands)

For more details, see Pricing for Vertex AI Agent Engine.

Vertex AI Agent Engine

Agent Engine now supports the following features:

• Agent Engine Code Execution, now in Preview, lets your agent run code in an isolated sandbox environment. For more information, see Code Execution.

• You can now develop, deploy, and use agents that support the Agent-to-Agent (A2A) protocol on Agent Engine. For more information, see Develop an Agent2Agent agent.

• Agent Engine now supports bidirectional streaming. For more information, see Bidirectional streaming.

• The Agent Engine page in the Cloud Console UI now has a new Memory Bank tab for displaying and managing memories.

Vertex AI Agent Engine

In version v1.112.0 of the Vertex AI SDK for Python, the agent_engines module has been refactored to a client-based design. For information about updating your existing code to the new design, see the Migration guide.

Vertex AI Agent Engine

Agent Engine now supports the following enterprise security features:

• You can now deploy your agents in a private VPC environment, configuring a Private Service Connect interface, to ensure data privacy and meet security and compliance requirements. For more information, see Configure Private Service Connect interface.

• You can now use your own customer-managed encryption keys (CMEK) to protect data at rest.

• You can now specify customized resource controls, such as the minimum and maximum number of application instances, resource limits for each container, and concurrency for each container.

• As a part of Vertex AI Platform, Vertex AI Agent Engine now supports HIPAA workloads.

For more information, see Agent Engine overview.

Vertex AI Agent Engine

Vertex AI Agent Engine Memory Bank is now available in Preview. Memory Bank lets you dynamically generate long-term memories based on users' conversations with your agent.

Vertex AI Agent Garden

Vertex AI Agent Garden now supports filtering by tags.

Vertex AI Agent Engine

The following features are now available in Preview:

• Console support for managing deployed agents
• Sessions support for Agent Development Kit agents

Vertex AI Agent Engine

The following features are now available for Vertex AI Agent Engine in Preview:

• Agent Development Kit integration
• Example Store
• LlamaIndex Query Pipeline integration

The following features are now generally available for Vertex AI Agent Engine:

• Agent monitoring

Agent Development Kit (ADK) is now available in Preview. For more information, see Agent Development Kit.

Agent Garden is now available in Preview. For more information, see Vertex AI Agent Builder overview or go directly to Agent Garden in the Cloud Console.

Vertex AI Agent Builder now refers to a suite of features for building and deploying AI agents in Vertex AI. For more information see, Vertex AI Agent Builder overview.

The original Vertex AI Agent Builder product has been renamed AI Applications. The product functionality and endpoints remain the same. For more information, see What is AI Applications?.

Vertex AI Agent Engine

Vertex AI Agent Engine is now generally available (GA).

Billing for Vertex AI Agent Engine starts on March 4, 2025. We recommend that you delete unused resources to avoid incurring unwanted costs. For more information, see Pricing.

LangChain on Vertex AI has been renamed to Vertex AI Agent Engine.

LangChain on Vertex AI

Billing for LangChain on Vertex AI will start on March 4, 2025.

The pricing structure is based on vCPU hours and GiB hours used. This means that you will be charged for both the compute (vCPU) and memory resources consumed by your LangChain on Vertex AI workloads.

You can review the pricing details in the table below.