Vertex AI

Vertex AI will appear in the list of available providers when VERTEXAI_PROJECT and VERTEXAI_LOCATION are set. You will also need to be authenticated:

$ gcloud auth application-default login

To add specific models to the configuration, configure as such:

# crushrc — authentication still comes from gcloud and the VERTEXAI_* env vars.
provider add vertexai --type google-vertex

model add vertexai/claude-sonnet-4@20250514 \
  --name "VertexAI Sonnet 4" \
  --context-window 200000 \
  --default-max-tokens 50000 \
  --can-reason true \
  --supports-images true \
  --price-input 3 \
  --price-output 15 \
  --price-cache-create 3.75 \
  --price-cache-hit 0.3