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How do I set the OpenAI endpoint?

You can use either the classic OpenAI Chat Completions or Responses endpoints. To select your preferred endpoint when creating the provider, follow these steps:
  1. Go to the Settings section.
  2. Click on Providers.
  3. Select OpenAI from the list of providers.
  4. Choose the endpoint you want to use. Create an OpenAI provider
Once you select an endpoint, all prompts using this provider will use that same endpoint.

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Responses API

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OpenAI built-in tools

When using Responses, you can access OpenAI’s built-in tools, such as web search: 
---
provider: my-openai-provider
model: gpt-4.1
temperature: 0.1
tools:
  - openai:
      - type: web_search_preview
        search_context_size: low
---

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How do I set the OpenAI thinking budget?

The latest OpenAI models have a configurable thinking budget that allows you to control the amount of time the model spends reasoning to generate a response. 
---
provider: name-of-your-openai-provider-in-latitude
model: o4-mini
reasoningSummary: detailed
reasoningEffort: high
---
The Chat Completions API does not support reasoning summaries. Switch to the Responses API for a better experience.