Gemini Enterprise Agent Platform Updates & Release Notes

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 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.

Feature

The Gemini Deep Research Agent released in Preview

The Gemini Deep Research Agent has been released in Preview. The Gemini Deep Research Agent is a managed AI agent that plans, executes, and synthesizes complex, multi-step research workflows across the public web and private enterprise data to generate comprehensive, cited reports. For more information, see Use the Gemini Deep Research Agent.

Feature

Agent Platform Sandboxes

Additional Agent Platform sandbox features are now available:

• Computer use (Preview): Enables agents to automate browser-based tasks within an isolated web browser environment. You can control the browser using the API or connect directly using the Chrome DevTools Protocol (CDP).
• Custom container sandboxes (Preview): Bring your own container (BYOC) to run custom workloads with specialized dependencies hosted in Artifact Registry.
• Sandbox templates (Preview): Define sandbox specifications as reusable templates relying on pre-warmed pools to facilitate rapid, reliable startups.
• Sandbox snapshots (Preview): Save the exact state of your sandbox environment (including dependencies and file systems) and restore it to a new sandbox.

Feature

Identify the agents with the most content security violations

The Security dashboard displays the top 10 agents with the most content violations detected by Model Armor. The list shows the agent ID of each agent and the number of violations detected for that agent. For more information, see Monitor content security.

Change

Supervised fine-tuning available for Gemini 3.1 Flash Lite (Preview)

Supervised fine-tuning is now available for limited support for the gemini-3.1-flash-lite model. During this period, model tuning for Gemini 3.1 Flash Lite 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.

Change

Set media resolution at a Part-level for data when using supervised fine-tuning

Supervised fine-tuning now supports Part-level mediaResolution declarations for images, videos, and PDFs. Part-level media resolution declarations also support the MEDIA_RESOLUTION_ULTRA_HIGH level.

See the following media type–specific pages for more information:

• Document tuning
• Image tuning
• Video tuning

Feature

Gemini 3.5 Flash is generally available (GA)

For details, see the model specifications page.

Feature

Manage agent revisions and traffic splitting

Agent revisions and traffic splitting are now available in public preview. You can create immutable revisions of deployed agents, and split traffic between the different active revisions. This enables canary deployments and safe testing of new agent versions. For more information, see Manage revisions and traffic.

Feature

Manage and discover agent skills with Skill Registry

Manage and discover agent skills with the Skill Registry, in public preview. This secure, private, and low-latency repository stores skills as self-contained packages, including instructions, code, and documentation, to enhance agent abilities.

For more information, see:

• Skill Registry overview
• Create and manage skills

Feature

Managed Agents API on Agent Platform released in Preview

The Managed Agents API on Agent Platform has been released in Preview.

This feature allows you to build and scale autonomous agents, including those built from configuration using the Antigravity harness. These agents run in a fully managed and isolated sandbox environment, equipped with tools and skills, and can be interacted with via a dedicated API.

For more information, see the following:

• Managed Agents API on Agent Platform overview
• Create and manage agents
• Interact with agents
• Managed Agents API on Agent Platform sandbox environment

Feature

AI Content Detection API available

AI Content Detection API is available in Preview. For details see AI Content Detection.

Feature

Provisioned Throughput for Gemini now supports latency SLA

Provisioned Throughput now provides a tokens per second latency SLA, covering generation speed from the first returned token to the last.

For more information, see the Gemini Enterprise Agent Platform Online Inference Service Level Agreement (SLA).

Change

Memory Bank and Sessions support for multi-regional and global endpoints is in Preview. For more, see Supported locations for agents in Agent Platform.

Change

Gemini Distillation Service Early Access

We're introduction Gemini Distillation Service in Early Access. For information about requesting access, see Gemini Distillation Service.

Change

Improvements to the Provisioned Throughput orders page have now made it possible to:

• View all scheduled orders by using the Start Date column.
• Enable filtering and sorting of orders by using column names.
• Download all order data to a CSV file (including across all regions).

See View standard Provisioned Throughput orders.

Fixed

Fixed an issue with Audio track extraction (Gemini Embedding 2 only) where the audio_track_extraction feature did not work. For more information, see Issue #504505771.

Change

Agent Platform Gemini 3.1 Flash Image and Gemini 3 Pro Image

Gemini Enterprise Agent Platform Gemini 3.1 Flash Image Preview and Gemini 3 Pro Image Preview are introducing the following changes:

• Upgrades to improve 4K outputs and efficiency in both models
• Gemini 3.1 Flash Image Preview and Gemini 3 Pro Image Preview will now return a maximum of 1 thought image.
• The image_size parameter for Gemini 3.1 Flash Image Preview now accepts "512", "512p", "512P", "512PX", "512px" to generate 0.5MP resolution output images.
• The default thinking level for Gemini 3.1 Flash Image Preview changed to Minimal.

Feature

Improved transcription quality for Gemini Live API

You can now improve transcription quality for multilingual automatic speech recognition (ASR) by using the [input/output]_audio_transcription.language_codes field.

For more information, see Enable audio transcription for the session.

Feature

Asynchronous function calling with Live API

Asynchronous function calling is now available in public preview in Gemini Live API. You can run functions in parallel with conversation, manage background processing, and handle function responses with policies including SILENT, WHEN_IDLE, and INTERRUPT. For more information, see Asynchronous function calling with Gemini Live API.