Anthropic Vertex plugin

OpenClaw Anthropic Vertex provider plugin for Claude models on Google Vertex AI.

Distribution

• Package: @openclaw/anthropic-vertex-provider
• Install route: npm; ClawHub

Surface

providers: anthropic-vertex

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Claude Fable 5

Use anthropic-vertex/claude-fable-5 where the model is available in your Google Cloud region. Fable 5 always uses adaptive thinking and defaults to high effort. /think off and /think minimal use low effort because the model does not support disabling thinking.

Claude Sonnet 5

Use anthropic-vertex/claude-sonnet-5 with Vertex's global, us, or eu endpoint. Sonnet 5 defaults to adaptive thinking at high effort and supports /think off or the native /think xhigh|max levels. OpenClaw publishes its 1,000,000-token context window and 128,000-token output limit automatically.

Catalog pricing follows Vertex's introductory global rate of $2/$10 per million input/output tokens through August 31, 2026, then $3/$15 from September 1. The us and eu multi-region endpoints use Vertex's documented 10% premium.

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