messages.9.assistant.reasoning_content: property 'messages.9.assistant.reasoning_content' is unsupported

[codeliger]

Description

cerebras cloud with gpt-oss:120b

messages.9.assistant.reasoning_content: property 'messages.9.assistant.reasoning_content' is unsupported

Plugins

No response

OpenCode version

1.17.9

Steps to reproduce

chat with llm on codebase

Screenshot and/or share link

No response

Operating System

linux

Terminal

vscodium-terminal

[github-actions]

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

• Cerebras zai-glm-4.7 fails on follow-up turn with reasoning_content #26762: Same error (messages.N.assistant.reasoning_content: property is unsupported) with Cerebras models on multi-turn conversations with reasoning/tool calls