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Kimi K2.6: thinking is enabled but reasoning_content is missing in assistant tool call message #29690
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Description
Description
When I try to use Kimi K2.6 through openrouter, using moonshotai provider, when it tries do multi-step tool calls, the flow stops with the error: [Moonshot AI] thinking is enabled but reasoning_content is missing in assistant tool call message at index [N]
Plugins
None. Fresh install
OpenCode version
v1.15.11
Steps to reproduce
- Install opencode
- Connect openrouter as a provider and select model: Kimi K2.6
- Try using it, you will get this error in a multi-step tool call flow
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Operating System
Arch Linux
Terminal
VSCode integrated terminal, Ghostty, gnome-console
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github-actions commentedon May 28, 2026
This issue might be a duplicate of existing issues. Please check:
reasoning_contentmissing in assistant tool call messagesthinking is enabled but reasoning_content is missing in assistant tool call message at index)longkerdandy commentedon Jun 12, 2026
I have upgraded opencode to v1.17.4, still having the same issue
github-actions commentedon Aug 12, 2026
To stay organized issues are automatically closed after 60 days of no activity. If the issue is still relevant please open a new one.