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Google's SDK 2.26.0 adds Gemini 3.8 TTS models.

The 2.26.0 release includes new TTS models and metrics export feature.

1 Oct 20261 verified claims1 sources1 observations
What happened

The official source reports this update: v2.26.0. 2.26.0 (2026-09-30) Features Add gcs_metrics_uri for exporting tuning job metrics. ( b6535e8 ) Add Gemini 3.8 Flash TTS and Gemini 3.8 Flash Lite TTS models to SDKs ( 0cad6ca ) genai-sdk: Add environments dedicated module and from_environment support ( 7672ff6 ) Include labels for LiveClientSetup ( 4742c9a ) Support labels for Gemini API GenerateContent ( 81ffa26 ) Bug Fixes Build a model before reading its field annotations when pruning extra fields ( 7845acd ) cli: Include auto-assigned flag shorthands in --usage schema ( 2579b94 ) Ensure Vertex AI interactions client uses default timeout=None instead of 5s.

Why it matters

This official update documents a development concerning v2.26.0. Its practical significance depends on the scope and evidence stated by the source.

What to watch next

Read the official source update and verify its stated scope, evidence and timing before acting on it.

Connected knowledge

Entities affected by this event

Python Genaisubject
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agents-softwareGAOS SDK 2.25.0 adds sample_audio to Voice.22 Sept 2026agents-softwareNew SDK Features Include Credential APIs and Environment File Management17 Sept 2026agents-softwareSoftware update 2.23.0 adds environment copying support.11 Sept 2026agents-softwareGemini 3.8 Flash model added to SDKs in version 2.22.02 Sept 2026agents-softwareVersion 2.21.0 adds support for audio/webm MIME type31 Aug 2026
Evidence trail

Sources behind the event

Google Gen AI Python SDK releasesv2.26.0
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