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<think> tags not properly parsed into block #4952
Description
Description
(Opus 4.5 via Claude Code auth)
Seeing <thinking> tags in Claude Code output. No idea what layer the issue lies at.
Also an agent response looks wrapped in <system_prompt> tags; could be related
OpenCode version
1.0.126
Steps to reproduce
N/A
Screenshot and/or share link
Operating System
macOS 26.0.1
Terminal
Ghostty
Activity
github-actions commentedon Dec 1, 2025
This issue might be a duplicate of existing issues. Please check:
&&and\n) is not being properly unescaped before being processed/rendered, which could be related to how<think>tags are being handled.Feel free to ignore if your specific case about
<think>tags and<system_prompt>tags differs from the XML entity unescaping issue.rekram1-node commentedon Dec 1, 2025
in claude code output? wdym
nicosuave commentedon Dec 1, 2025
This is OpenCode. Oh wasn't sure if response format from Anthropic is different if authed with Anthropic / Claude Code auth.
rekram1-node commentedon Dec 1, 2025
what model are you using that outputted think tags?
nicosuave commentedon Dec 1, 2025
Oof good call out it was very old Opus (and not 4.5). Fuzzy finder + me not paying attention got me.