> ## Documentation Index
> Fetch the complete documentation index at: https://docs.auriko.ai/llms.txt
> Use this file to discover all available pages before exploring further.

# thinking_disable_not_supported

> HTTP 400 — Model does not support disabling thinking.

## HTTP status

`400 invalid_request_error`

## Typical cause

The request sets `reasoning_effort: "off"` but the selected model requires thinking/reasoning and does not allow disabling it.

## Resolution

Remove `reasoning_effort: "off"` from the request, or choose a model that supports disabling thinking.