Attempting to use Claude Sonnet 4.5 gives "Bad Request". Recent usage shows Haiku being used. #3724

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1. MostHated

   added

   bugSomething isn't workingSomething isn't working

   on Nov 2, 2025
2. github-actions commented on Nov 2, 2025

   

   github-actionsBot

   on Nov 2, 2025 – with GitHub Actions

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

   • Unable to login with zen provider. #3335: Unable to login with zen provider - Similar Zen authentication issues that could cause Bad Request errors
   • Claude Sonnet 4.5 Throws "text content block must contain non-whitespace text" #3375: Claude Sonnet 4.5 throws 'text content block must contain non-whitespace text' - Specific Claude Sonnet 4.5 errors
   • opencode zen models tool calls are not parsed correctly mid conversation #3561: OpenCode Zen models tool calls are not parsed correctly mid conversation - Issues with model switching/selection via Zen (relates to Haiku being used instead of Sonnet 4.5)
   • OpenTUI: /init command is missing in v1.0.x #3637: OpenTUI: /init command is missing in v1.0.x - Direct issues with /init command functionality

   Feel free to ignore if none of these address your specific case.
3. rekram1-node

   self-assigned this

   on Nov 2, 2025
4. rekram1-node commented on Nov 2, 2025

   

   rekram1-node

   on Nov 2, 2025

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   ill take a look
5. rekram1-node

   added

   opentuiThis relates to changes in v1.0, now that opencode uses opentuiThis relates to changes in v1.0, now that opencode uses opentui

   on Nov 2, 2025
6. MostHated commented on Nov 3, 2025

   

   MostHated

   on Nov 3, 2025

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   I just ran the upgrade command a few minutes ago and tried again, it seems the issue was resolved in one of the recent updates.
7. MostHated

   closed this as completedon Nov 3, 2025