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Anthropic

Get a key

  1. Sign in at console.anthropic.com
  2. Settings → API Keys → Create Key
  3. Copy the value

Set it

Terminal window
basalt config set provider.anthropic.api_key sk-ant-...

Models used

UseModel
Synthesisclaude-sonnet-4-6 (default)
Audit reasoningclaude-haiku-4-5 (cheap)

Anthropic does not currently offer a competitive embedding model; pair it with Ollama (free, local) or OpenAI for embeddings.

Cost expectations

Brief synthesis: ~$0.02–$0.05 per brief on Sonnet, ~$0.005 on Haiku.