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Vertex AI Vizier Agent Platform Vizier

Legacy names Vertex AI Vizier, AI Platform Vizier

Black-box optimization and hyperparameter tuning service for machine learning models and complex functions.

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Naming timeline

  1. Vertex AI Vizier

    · Google I/O 2021

    Managed black-box optimization and hyperparameter tuning service on Vertex AI.

  2. Agent Platform VizierCurrent name

    Rebranded to Agent Platform Vizier under Gemini Enterprise Agent Platform.

What is Vertex AI Vizier called now?

Vertex AI Vizier is now called Agent Platform Vizier, with the latest change in October 2025. Earlier names covered by this entry also include AI Platform Vizier. Black-box optimization and hyperparameter tuning service for machine learning models and complex functions. Only the customer-facing name changed; the underlying technical identifiers remain backward compatible.

Technical identifiers

Technical identifiers unchanged. Only the customer-facing product name changed; the APIs, CLI commands, IAM roles and Terraform resources below keep their legacy identifiers for backward compatibility.

REST / gRPC APIsaiplatform.googleapis.com
gcloud / CLI Commandsgcloud ai
IAM Predefined Rolesroles/aiplatform.*

Uses the studies and trials resources on aiplatform.googleapis.com.

Notes & disambiguation

  • Rebranded from Vertex AI Vizier to Agent Platform Vizier under Gemini Enterprise Agent Platform.

Sources & official documentation

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