Gemini Enterprise Agent Platform Updates & Release Notes

Deprecated

Grok 4.1 models deprecation

The Grok 4.1 model family (including xai/grok-4.1-fast-reasoning and xai/grok-4.1-fast-non-reasoning) on the Gemini Enterprise Agent Platform is deprecated and will be shut down on August 20, 2026. After this date, Google Agent Platform Model as a Service (MaaS) will no longer serve these models. Specifically, API requests directed to the https://aiplatform.googleapis.com/v1/projects//locations/global/endpoints/openapi/chat/completions endpoint using the Grok 4.1 model IDs will fail and return a 400 error. To maintain service, migrate your applications to newer xAI models (such as Grok 4.2 or Grok 4.3) or choose an alternative model from the Google Cloud Model Garden.

Feature

Memory Bank support for Gemini Embedding 2

Memory Bank supports the gemini-embedding-2 model for similarity search configurations.

When you configure gemini-embedding-2 as the embedding model, you must use one of the global, us, or eu endpoints in the model's resource name (for example, projects/{project}/locations/us/publishers/google/models/gemini-embedding-2). Memory Bank does not support using regional locations (for example, us-central1) for gemini-embedding-2.

For details, see Similarity search configuration.

Feature

Memory Bank IngestEvents is generally available (GA)

The Memory Bank IngestEvents API is generally available. The IngestEvents API decouples event ingestion from memory generation, letting you continuously stream content to Memory Bank and configure when memory generation is triggered.

This GA release includes the following features:

• Carry over context between generation windows: Use the overlap_event_count parameter to re-include already-processed events at the start of the next window to keep memories coherent.
• Configure memory revisions for ingested events: Use revision_labels, revision_ttl, or disable_memory_revisions to customize how generated revisions are managed.
• Attach metadata to memories: Use the metadata and metadata_merge_strategy configuration parameters to store structured information alongside generated memories.

For details, see Ingest events.

Feature

AlphaGenome released for Gemini Enterprise Agent Platform

AlphaGenome, Google DeepMind's state-of-the-art genomics foundation model, is now available for deployment and use with Gemini Enterprise Agent Platform.

Designed to decipher the functional regulatory code of the human genome, AlphaGenome analyzes large-scale DNA sequences at single-base resolution to predict how genetic variations affect molecular and biological mechanisms like gene expression, chromatin accessibility, and RNA splicing. For information on how to use AlphaGenome in Agent Platform, see the documentation.

Feature

Gemini 3.5 Flash default model for Memory Bank

The default model used for Memory Bank generation is now Gemini 3.5 Flash instead of Gemini 2.5 Flash. For information, see Set up Memory Bank.

Feature

Semantic Governance Policies available in Public Preview

Semantic Governance Policies (SGP) and the SGP engine are now available in Preview. SGP provides an intelligent security and compliance layer that evaluates an AI agent's proposed tool calls against user intent and organizational business rules at runtime.

Key capabilities include:

• Natural Language Constraints (NLC): Author declarative business rules and security guardrails in plain English without needing to write code or redeploy agent applications.
• Layered Intent Gating: Intercepts agent tool calls at runtime to verify alignment with trusted user intent and prevent unauthorized actions, rogue tool use, and data exfiltration.
• Granular Scoping: Apply constraints globally across all tools for an agent or target specific tools and parameters (e.g., enforcing strict financial limits or geographic restrictions).
• Agent Skills Lifecycle Governance: Protects agents from context poisoning and supply-chain exploits by governing the dynamic loading of Agent Skills (tool packages) during sessions.
• Dry Run Mode: Test and observe policy verdicts in Log Explorer before enforcing them on active traffic.

For more information, see Semantic governance policies overview.

Feature

Provisioned Throughput: Email notifications GA

The ability to get email notifications for Provisioned Throughput events is generally available. See Get email notifications.

Feature

New Provisioned Throughput features

The following Provisioned Throughput features are generally available:

• Change an order: See Change a standard Provisioned Throughput order.
• Schedule a new order: Set a start date and time when you create an order. See Place a standard Provisioned Throughput order.
• Schedule a change to an order: Set a start date and time when you change an order. See Change a standard Provisioned Throughput order.
• Split an order: Divide an active order into two orders. See Split an order.

Feature

AI security findings in Agent Platform

Viewing AI security findings and posture management summaries in Gemini Enterprise Agent Platform is generally available.

With this release, the Security dashboard introduces the Top security findings widget.

Also, specific features within the AI security widgets are available in Preview, including the following:

• Vulnerability findings and threat monitoring for agent runtimes (such as Cloud Run)
• Historical content violation trends (Violations over time)

For more information, see View security findings.

Feature

Model Armor for Agent Gateway in General Availability

You can enable Model Armor on an Agent Gateway resource to apply your organization's content security guardrails to prompts and responses that pass through the gateway. This feature is generally available (GA).

For more information, see Configure Model Armor on a gateway.

Change

Supervised fine-tuning available for Gemini 3.1 Flash Lite and Gemini 3.5 Flash in Public Preview

Supervised fine-tuning is now available for the gemini-3.1-flash-lite and gemini-3.5-flash models in Preview. Model tuning for Gemini 3.1 Flash Lite and Gemini 3.5 Flash is restricted to us-central1 and europe-west4 and tuned model serving is restricted to the us and eu multi-region endpoints.

See About supervised fine-tuning for more information.

Feature

Provisioned Throughput support for supervised fine-tuned Gemini 3 model inference.

Provisioned Throughput can be used to assure supervised fine-tuned inference using the same quota. Supervised fine-tuned inference for Gemini 3 models incurs a higher burndown rate compared to base model inference. Learn more here.

Feature

Agent Gateway in General Availability

Agent Gateway is the networking component of the Gemini Enterprise Agent Platform ecosystem. It secures and governs connectivity for all agentic interactions, whether they occur between users and agents, agents and tools, or among agents themselves.

For details, see Agent Gateway overview.

Feature

Agent Observability is generally available (GA)

This release provides visibility into the performance, behavior, and health of deployed agents and Model Context Protocol (MCP) servers directly within the agent management workflow.

Key updates in this release include:

• Default-On Tracing: OpenTelemetry tracing is now enabled by default for newly deployed Agent Development Kit (ADK) agents on Agent Engine, simplifying the observability setup process without requiring manual configuration.
• Storage Prioritization: Google Cloud Storage (GCS) is the default storage choice in the Google Cloud Console, instead of Cloud Logging. We recommend that you store your multimodal prompt and response payloads in a Cloud Storage (GCS) bucket. This solution provides robust support for large payloads and it enables fine-grained lifecycle management.
• Enhanced Tracing: Inspect step-by-step session execution and view directed acyclic graphs (DAGs) of trace spans.

For more information, see the following:

• Observability overview
• View agent traces
• Set up tracing

Feature

Agent Registry is generally available (GA)

Agent Registry is generally available (GA). Agent Registry is a centralized catalog for discovering and registering agents and Model Context Protocol (MCP) servers.

The following features are available in Agent Registry for the GA launch stage:

• API v1 and client libraries: The v1 version of the Agent Registry API is available. Cloud client libraries are available in C#, Go, Java, Node.js, PHP, Python, and Ruby.
• A2A v1 support: Agent Registry supports Agent-to-Agent (A2A) protocol version 1.0, letting you explicitly declare transport endpoints and bindings inside the supportedInterfaces array, in addition to the existing 0.3 schema support.
• Terraform support: Terraform scripts for Application Default Credentials (ADC) have graduated to General Availability. You can use Terraform to configure and manage your agents, MCP servers, endpoints, and bindings.

Known limitations:

• Access Transparency and Access Approval: Access Transparency logs, which provide visibility into when Google personnel access your content, and Access Approval controls aren't available for Agent Registry configurations.
• Data Residency: If you configure the resource location constraint in your organization policy, Agent Registry enforces the constraint when you register a resource. However, detective controls for data residency compliance reporting are limited.

For more information, see the Agent Registry overview.

Feature

The Agent Identity API (agentidentity.googleapis.com) is available in Preview. This new API replaces the legacy IAM Connectors API (iamconnectors.googleapis.com) for managing auth providers and agent identities.

During the preview migration period, both APIs operate side-by-side. Existing auth providers are automatically mirrored to the new V2 resource hierarchy (authProviders/), allowing you to migrate your IAM policies, agent code, and client applications without downtime.

Feature

Agent Platform Gemini 3.1 Flash Image and Gemini 3 Pro Image

Gemini Enterprise Agent Platform Gemini 3.1 Flash Image and Gemini 3 Pro Image are Generally Available.

With this release, Gemini 3.1 Flash Image and Gemini 3 Pro Image support 4K image outputs in Preview.

Also supported in this release, Gemini 3.1 Flash Image supports video inputs in Preview. You can use video inputs to generate thumbnails or representative images of videos.

For more information, see the following:

• Gemini 3.1 Flash Image (Nano Banana 2)
• Gemini 3 Pro Image (Nano Banana Pro)

Deprecated

Agent Platform Gemini 3.1 Flash Image Preview and Gemini 3 Pro Image Preview deprecation

Gemini Enterprise Agent Platform Gemini 3.1 Flash Image Preview and Gemini 3 Pro Image Preview are deprecated. We recommend that you update your model endpoints before July 17, 2026, to avoid service disruption.

The following are the discontinued endpoints and recommended endpoint migration:

gemini-3.1-flash-image-preview → gemini-3.1-flash-image

gemini-3-pro-image-preview → gemini-3-pro-image

Feature

Anthropic's Claude Opus 4.8

Claude Opus 4.8 is available in Model Garden.

Feature

User ID logging now included with agent logs when you opt in to "Enable logging of prompt inputs and response outputs"

Prompt input and response output logging now includes the user.id field. This addition allows better tracking of anomalous tool interactions.

Important:

Logging of user.id is included when opting in to "Enable logging of prompt inputs and response outputs" effective May 22, 2026 and later and with the Agent Development Kit (ADK) version 2.1 and later. If you opted in prior to this change, your logs do not include user.id. You will need to redeploy your agents and opt-in again for this setting to take effect.

For details on configuration, see Write traces for an agent.