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Your agents are powered by advanced AI language models (LLMs), which act as the “brain” behind the scenes. You can configure these models to control how your agents behave.

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Model Options

Each model tier offers a different balance of speed, cost, and intelligence:
  • – Lightweight and fast. Ideal for simple tasks and quick replies.
  • Core (default) – A balanced choice. Handles most customer interactions well.
  • Ultra – The most advanced. Excels at understanding complex requests and reasoning step-by-step, though slightly slower.
Tip: Start with Express to keep your agents fast and cost-efficient. If you notice performance issues or more complex needs, upgrade to Core or Ultra. For critical tasks, we recommend using Ultra.

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Additional Settings

  • Tool Choice – Controls how the agent uses tools:
    • "auto" (default): Model decides when to use tools
    • "required": Tools must always be used
    • "none": Tool usage is disabled
  • Parallel Tool Calls – Enables calling multiple tools at once.
    • true or false (default: false)
CautionAdvanced settings come with safe defaults. Changing them without understanding their effect may lead to unexpected behavior. Only modify these if you’re confident in what they do.
Learn how to write clear instructions for your agents to get the best results—regardless of the model tier.