Significant response time degradation over last releases #2684

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1. fkukuck

   changed the title [-]Significant performance degradation over last releases[/-] [+]Significant response time degradation over last releases[/+] on Sep 19, 2025
2. rekram1-node commented on Sep 19, 2025

   

   rekram1-node

   on Sep 19, 2025

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   @fkukuck I think this is just the default settings giving to gpt-5 models changing, right now it defaults to high reasoning effort which means it takes longer

   You can override this if you would like
3. rekram1-node

   self-assigned this

   on Sep 19, 2025
4. fkukuck commented on Sep 19, 2025

   

   fkukuck

   on Sep 19, 2025

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   I wasn’t aware since I thought GitHub Copilot always runs medium and there is no choice possible.
5. fkukuck commented on Sep 19, 2025

   

   fkukuck

   on Sep 19, 2025

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   Will confirm next week
6. rekram1-node commented on Sep 19, 2025

   

   rekram1-node

   on Sep 19, 2025

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   @fkukuck to override this you can set this in your opencode.json:

   {
     "$schema": "https://opencode.ai/config.json",
     "provider": {
       "github-copilot": {
         "models": {
           "gpt-5-mini": {
             "options": {
               "reasoningEffort": "minimal",
               "textVerbosity": "low"
             }
           }
         }
       }
     }
   }
   

   to see available options read vercel ai sdk docs: https://ai-sdk.dev/providers/ai-sdk-providers/openai#responses-models

   reasoningEffort 'minimal' | 'low' | 'medium' | 'high' Reasoning effort for reasoning models. Defaults to medium.
   textVerbosity 'low' | 'medium' | 'high' Controls the verbosity of the model's response. Lower values result in more concise responses, while higher values result in more verbose responses. Defaults to 'medium'.

   👍React with 👍1Reacted by Fabian Kukuck
7. fkukuck

   closed this as completedon Sep 22, 2025