Please allow us to disable reasoning for low-latency interactions

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Assessment

Difficulty
3/5
Estimated time
1-2 days
Newbie friendliness
55/100
Issue type
Feature
Clarity
Mostly clear
Activity status
Quiet
Tech stack
java
Domain
api

Research direction

Start by tracing SupportedReasoningEfforts and the model reasoning configuration used by GPT 5.2, GPT 5.4, and Sonnet. Check how an unsupported value currently falls back to medium, then verify that support for none is accepted and disables reasoning for low-latency interactions.

Written by the indexing model from the issue text.

Description

runtime runtime triage

GPT 5.2 and 5.4 support the following reasoning levels:

  • none
  • low
  • medium
  • high
  • xhigh

where none disables reasoning entirely.

However, the API doesn't allow us to use none - it's not exposed through SupportedReasoningEfforts, and attempting to use it results in fallback to the default of medium. Can support for none be added, please?

The same applies to Sonnet, for which there is no means to disable reasoning completely.

Right now, the only available model suitable for low-latency interactions is GPT 4.1.

Dominant language
Java
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