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Guide

1

Navigate to Language Models

Access the Admin Panel from your user profile icon, then navigate to Configuration → Language Models.
2

Configure Anthropic

Select Anthropic from the available providers.Give this configuration a Display Name.Create an API key from the Anthropic API dashboard and paste it in the API Key field.Anthropic Provider Configuration
3

Configure Default and Fast Models

The Default Model is selected automatically for new custom Agents and Chat sessions.Designating a Fast Model is optional. This Fast Model is used behind the scenes for quick operations such as evaluating the type of message, generating different queries (query expansion), and naming the chat session.
If you select a Fast Model, make sure it is a relatively quick and cost-effective model such as gpt-4.1-mini, gpt-4.1-nano, or a smaller Claude or Gemini model.
4

Choose Visible Models

In the Advanced Options, you will see a list of all models available from this provider. You may choose which models are visible to your users in Onyx.Setting visible models is useful when a provider publishes multiple models and versions of the same model.
5

Designate Provider Access

Lastly, decide whether the provider should be public to all users in Onyx.If set to private, the provider’s models will be available to Admins and User Groups you explicitly assign the provider to.