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Native Trae does not directly support external model providers. You can use external model APIs by installing the Roo Code extension and configuring AI Gateway as an OpenAI-compatible provider.

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Install Roo Code

Open the Trae extension marketplace, search for Roo Code, and install the extension.

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Configure the Model API

When selecting an API provider, choose OpenAI Compatible. If you want to use Claude-series models, still choose OpenAI Compatible and use the OpenAI-compatible endpoint provided by AI Gateway.
FieldValue
API ProviderOpenAI Compatible
Base URLhttps://llm.gpuhub.com/api/v1
API KeyYour AI Gateway API key
ModelThe target model name, such as GLM-5 or claude-sonnet-4-6

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Context Length

If requests fail because of context length settings, adjust the context length in the extension configuration to match the selected model.