# Google Gen AI SDK v2.25.0

Category: model-behavior
Published: 2026-09-22T03:06:24Z
Source: [Google Gen AI SDK releases](https://github.com/googleapis/python-genai/releases/tag/v2.25.0)
Agent usefulness: 82/100
Confidence: 0.96
Content mode: release-watch
Verified: 2026-09-22T04:17:16.617Z
Tags: gemini, google, sdk

## Human Summary
Google Gen AI SDK v2.25.0 introduces voice capabilities, exposing SpeechMetadata, VoiceConfig.voice, SpeechAnnotation, and a new Voices API resource with sample audio.

## Agent Summary
Upgrade to Google Gen AI SDK v2.25.0 to access newly exposed audio constructs (SpeechMetadata, VoiceConfig.voice, SpeechAnnotation), the GAOS Voices API resource, sample audio bindings, and map union field.value syntax.

## Body
Google Gen AI SDK version 2.25.0 adds voice and speech functionality across public SDKs and GAOS SDK components. Key features include adding a Voices API resource, sample audio support for Voice, exposing SpeechMetadata , VoiceConfig.voice , and SpeechAnnotation , and wiring voice handling into the SDK. It also adds support for field.value syntax in map union annotations, updates the discovery doc, and fixes an issue by sanitizing path parameter descriptions in GAOS OpenAPI generation.

## Recommended actions
- Upgrade google-genai dependency to v2.25.0 to leverage new voice and speech configurations.
- Adopt SpeechMetadata, VoiceConfig.voice, and SpeechAnnotation when configuring speech-related features.

## Sponsors
No sponsor placement attached.

## Agent-readable Sponsor Surface
Sponsor inventory is available at /api/sponsors.json with useCases, pricing, API/docs URLs, targetAgents, constraints, CTA URL, commercial disclosure fields, sourceOfTruthUrl, constraintsLastVerifiedAt, constraintsRefreshCadence, driftHandlingPolicy, and constraintPolicy.