No Chain of Thought retrieved if Provider lacks support, despite thinkmode config #6768

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1. DevSissi

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   bugSomething isn't workingSomething isn't working

   on Jan 3, 2026
2. github-actions

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   rekram1-node

   on Jan 3, 2026
3. github-actions commented on Jan 3, 2026

   

   github-actionsBot

   on Jan 3, 2026 – with GitHub Actions

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

   • Claude Sonnet 4.5 is not thinking by default #3284: Claude Sonnet 4.5 is not thinking by default - configuration not being applied
   • Sonntet 4.5 thinking boxes are not showing despite thinking boxes enabled. #2919: Sonnet 4.5 thinking boxes are not showing despite thinking boxes enabled
   • Support reasoning configuration for AWS Bedrock provider #3428: Support reasoning configuration for AWS Bedrock provider - related to provider capability limitations
   • DeepSeek V3.2 : reasoning_content not cleared from message history on new turns, causing excess token usage and violating API spec #5577: DeepSeek V3.2 reasoning_content not cleared from message history - related to reasoning/thinking handling

   These issues involve thinking/reasoning configuration not being properly applied or displayed, which may be related to your situation where thinkmode config is ignored when the provider lacks support. Feel free to ignore if none of these address your specific case.
4. rekram1-node commented on Jan 3, 2026

   

   rekram1-node

   on Jan 3, 2026

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   im not sure what u mean whats thinkmode?
5. DevSissi commented on Jan 4, 2026

   

   DevSissi

   on Jan 4, 2026

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   I am utilizing the Claude models(e.g., Opus 4.5) by kiro(aiclient-2-api). However, it appears that the models in Kiro do not support toggling thinking via the thinking parameter in opencode.json. Is my explanation clear?
6. rekram1-node commented on Jan 4, 2026

   

   rekram1-node

   on Jan 4, 2026

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   what is kiro? How are u hitting it? Is this an issue w/ ur plugin? I dont think we maintain a kiro provider
7. DevSissi commented on Jan 4, 2026

   

   DevSissi

   on Jan 4, 2026

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   In fact, this is the Claude model provided by Amazon. Is there a more convenient way to check if the current model supports "thinking" and simultaneously display whether thinking mode is enabled?
   (Kiro is an AI IDE provided by AWS. I used the AIclient-2-API project to convert it into a local API service and integrated it into OpenCode.)
8. rekram1-node commented on Jan 4, 2026

   

   rekram1-node

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   i mean if it is entirely custom model then opencode doesnt know but all the models we maintain lists of we track:

   • reasoning (is it a reasoning model)
   • context limits
   • tool call capabilities
     and much more
9. DevSissi commented on Jan 4, 2026

   

   DevSissi

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   By reading Kiro's official documentation, it appears they implement think mode through extensions in their own CLI tool. Does this mean that models from Kiro are inherently models without a think mode?

   the doc: https://kiro.dev/docs/cli/experimental/thinking/
10. github-actions commented on Mar 25, 2026

    

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    To stay organized issues are automatically closed after 90 days of no activity. If the issue is still relevant please open a new one.
11. thdxr

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    bugSomething isn't workingSomething isn't working

    on May 3, 2026
12. rekram1-node

    closed this as not plannedon May 22, 2026