Kimi K2.5 frequently gets in a reiteration loop #14343

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1. berenddeboer

   added

   bugSomething isn't workingSomething isn't working

   on Feb 19, 2026
2. github-actions

   assigned

   rekram1-node

   on Feb 19, 2026
3. github-actions

   added

   coreAnything pertaining to core functionality of the application (opencode server stuff)Anything pertaining to core functionality of the application (opencode server stuff)

   on Feb 19, 2026
4. github-actions commented on Feb 19, 2026

   

   github-actionsBot

   on Feb 19, 2026 – with GitHub Actions

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

   • Doom loop is not caught when during reasoning or output #12716: Doom loop not caught during reasoning or output (similar looping/reiteration behavior)
   • Loop in certain models #3743: Loop in certain models (general model looping issue)
   • Duplicate Executions in Kimi K2 Model via Cortecs or Nebius Directly #3458: Duplicate Executions in Kimi K2 Model (repetitive execution with Kimi models)

   If your issue is distinct from the above, please clarify what makes it different.
5. rekram1-node commented on Feb 20, 2026

   

   rekram1-node

   on Feb 20, 2026

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   What provider?
6. berenddeboer commented on Feb 20, 2026

   

   berenddeboer

   on Feb 20, 2026

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   What provider?

   Opencode Zen.
7. rekram1-node

   added

   zenRelates to ZenRelates to Zen

   and removed

   coreAnything pertaining to core functionality of the application (opencode server stuff)Anything pertaining to core functionality of the application (opencode server stuff)

   on Feb 20, 2026
8. rekram1-node

   assigned

   fwang

   and unassigned

   rekram1-node

   on Feb 20, 2026
9. yuriy-merkudinov commented on Feb 20, 2026

   

   yuriy-merkudinov

   on Feb 20, 2026

   Last edited by yuriy-merkudinov

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   I'm also having problems using Zen's Kimi K2.5. The Free version of Kimi K2.5 worked as expected, but the paid version somehow behaves strangely when used with the same tasks. It feels like the two models are completely different, even though that shouldn't be the case.

   UPD: The free version worked until it disappeared from the desktop app.

   👍React with 👍1Reacted by FrostByte
10. moritzruth commented on Mar 16, 2026

    

    moritzruth

    on Mar 16, 2026

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    I don’t know enough about all this to tell whether this is a proper fix or just a workaround, but setting frequency_penalty to 2.0 (the maximum) and temperature to 0.3 made Kimi K2.5 usable for me.

    {
    	"provider": {
    		"openrouter": {
    			"models": {
    				"moonshotai/kimi-k2.5": {
    					"options": {
    						"frequency_penalty": 2.0,
    						"temperature": 0.3,
    					},
    				},
    			},
    		},
    	},
    }

    👍React with 👍1Reacted by Szymon Kaczmarczyk
11. thdxr

    removed

    bugSomething isn't workingSomething isn't working

    zenRelates to ZenRelates to Zen

    on May 3, 2026
12. github-actions commented on Jul 4, 2026

    

    github-actionsBot

    on Jul 4, 2026 – with GitHub Actions

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    To stay organized issues are automatically closed after 60 days of no activity. If the issue is still relevant please open a new one.
13. github-actions

    closed this as not plannedon Jul 4, 2026