GLM-5 with opencode Windows GUI - syntax for disable thinking and reasoning in opencode.json not working

[passystems-tus]

Description

I am trying to switch the thinking / reasoning mode of with an entry in my opencode.json:

{
  "$schema": "https://opencode.ai/config.json",
  "provider": {
    "zai": {
      "models": {
        "glm-5": {
          "options": {
            "reasoning": {
              "enabled": false
            }
          }
        }
      }
    }
  },

But opencode / glm-5 continues to give me thinking blocks:

Has anyone the correct syntax or is there a keyobard shortcut or "/" command to disable this behavior?

Plugins

none

OpenCode version

OpenCode Desktop v1.2.9

Steps to reproduce

Use GLM-5 Pro Subscription
Enter my settings to opencode.json
Give Commands

Screenshot and/or share link

No response

Operating System

Windows 11

Terminal

Windows Terminal / Windows Power Shell, but i use the desktop version of opencode

[github-actions]

This issue might be a duplicate of existing issues. Please check:

• [FEATURE]: Add disable_reasoning parameter for GLM/Cerebras thinking toggle #11987: Feature request to add disable_reasoning parameter for GLM/Cerebras models (open, same core problem — no way to disable thinking/reasoning for GLM models in config)
• How to disable thinking in GLM-4.6? #3259: "How to disable thinking in GLM-4.6?" (closed, same question for a prior GLM version)
• [bug] GLM 5 keeps screwing up the json parsing of read tool calling #13982: GLM-5 JSON parsing issues with tool calling (open, related GLM-5 reasoning/thinking problems)

If your issue is specifically about the options.reasoning.enabled: false config syntax not being honored, that may be a distinct bug worth keeping separate. Otherwise, consider whether #11987 already tracks the underlying missing feature.

[passystems-tus]

Yes, duplicate ok closing it