Agent Development Kit (ADK) 2.13.0 released

Stability: Access 12 mature experimental features now promoted to stable status. See the unit guide for more details. (ea298d4); Classifiers: Route workflows with TypeSafe's Jev models via the new TypesafeClassifier and ClassifierNode. Jev returns calibrated…

What changed

• Stability: Access 12 mature experimental features now promoted to stable status. See the unit guide for more details. (ea298d4)
• Classifiers: Route workflows with TypeSafe's Jev models via the new TypesafeClassifier and ClassifierNode. Jev returns calibrated probabilities in a single forward pass, much faster than an LLM.
• Live Audio: Enable natural real-time voice interactions with barge-in support alongside Gemini speech-to-text and text-to-speech integration. See the unit guide for more details. (2e7ef92)
• MongoDB Sessions & Memory: Persist sessions in MongoDB and share them across runner replicas with the new MongoDbSessionService.
• MongoDB: Deploy MongoDbToolset to Agent Engine without packaging your connection string, and let Atlas Automated Embedding embed search queries server-side, with no Google embedding call or…
• Performance: Enjoy up to 8x faster execution turns for string-model agents and reduced event-loading overhead. (772f139)
• Telemetry: Defaults to OpenTelemetry GenAI v2 (otel_semconv_1_44, removing call_llm); set ADK_TELEMETRY_SCHEMA_VERSION_OPT_IN=otel_semconv_1_36 to keep the legacy v1 schema.
• telemetry: deprecate call_llm span and OpenTelemetry 1.36 GenAI semconv

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