Model Selection
In Zaia Endless, each Agent can be powered by a specific Provider and Model. This configuration defines:
Which LLM is used for reasoning
How billing and credit consumption are handled
The model selection is part of the Agent configuration flow and is defined after the Prompt, ensuring that the Agent’s instructions are clear before choosing how it will reason.
Where to Select the Model
The Provider and Model selector is located below the main Prompt field in the Agent configuration screen.
This positioning reflects the recommended workflow:
Define the Agent’s Role
Write the Prompt
Select the Provider and Model
Adjust behavioral settings (Temperature, Effort, Planning, Reasoning)
How Providers Work
There are two ways to connect LLMs to your Agents.
Option 1 — Using Zaia Provider
When you select Zaia as the provider, your Agent uses models natively available on the platform (such as Claude Sonnet 4.5 or GPT-4o mini).
In this mode:
You consume Zaia platform credits per execution
Authentication and billing are fully managed by Zaia
No API key configuration is required
This is the recommended option for most users who want a fully managed experience with instant access to multiple LLMs.
Option 2 — Adding a Custom Provider
You can also connect your own LLM provider, bypassing Zaia’s managed credits.
To configure a custom provider, go to:
In this panel, you can:
Set a provider name (e.g., “OpenAI Personal”, “Anthropic Enterprise”)
Select the provider type (Anthropic, OpenAI, or Google AI)
Paste your API key
Optionally add an internal description for identification
Once saved, the provider becomes available in the Provider dropdown inside the Agent configuration.
When an Agent uses a custom provider:
It consumes your own API credits
Billing happens directly with the external provider
Zaia does not charge credits for model execution
🔒 Security note: API tokens are stored in encrypted form and are only used when invoking the selected model for your Agent.
Switching Models Per Agent
Model selection is Agent-specific. This allows you to:
Use lightweight models for FAQs or simple Agents
Assign more powerful models to complex, reasoning-heavy Agents
Optimize cost, latency, and accuracy across your workspace
You can change the model at any time without modifying the Agent’s Prompt or logic.
Best Practices
Always define the Prompt first, then select the model
Use Zaia Provider for faster setup and predictable billing
Use custom providers when you need:
Cost optimization at scale
Enterprise contracts
Provider-specific features
👉 Choosing the right model ensures your Agent balances performance, cost, and reasoning quality according to its purpose.
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