Models

Hanzo Chat talks to the Hanzo AI API, so it can reach every model the gateway serves — the enso and Zen families, and the models we carry from outside labs, on one key.

Which models those are, and what each costs, is one list and it lives at Models. It is fetched from the gateway as you read it, so it is right today; the hand-written table that used to sit here named a zen4 family the gateway has since retired, at prices that were never updated. That is what a second copy of a catalogue always becomes.

This page covers the part that is Chat's own: choosing and configuring which of those models Chat offers you.

Recommendations

Pick by the shape of the job, then copy the id from the catalogue:

Configuring Models

Via chat.yaml

endpoints:
  hanzo:
    baseURL: "https://api.hanzo.ai/v1"
    apiKey: "${HANZO_API_KEY}"
    models:
      default:
        - zen5
        - zen5-coder
        - zen5-mini
      fetch: true  # Auto-discover additional models

  openAI:
    apiKey: "${OPENAI_API_KEY}"
    models:
      default:
        - gpt-4o
        - o3

Auto-Discovery

Set fetch: true on any endpoint to automatically discover available models from the API. This is useful when new models are added — they appear without config changes.

Custom Display Names

endpoints:
  hanzo:
    modelDisplayLabel: "Zen"
    iconURL: "https://cdn.hanzo.ai/img/logo-white.svg"

Pricing

• $5 free credit on every new account (expires in 30 days)
• Prepaid billing — add credits at console.hanzo.ai
• $1 minimum balance required for API calls
• No surprise bills — service stops when credits are depleted

Per-model rates are on the Pricing page.