use DeepSeek v4 think show The `reasoning_content` in the thinking mode must be passed back to the API.

[XXUZZWZ]

Description

model config

"provider": {
"deepseek": {
"npm": "@ai-sdk/openai-compatible",
"name": "DeepSeek",
"options": {
"baseURL": "https://api.deepseek.com",
"apiKey": ""
},
"models": {
"deepseek-v4-pro": {
"name": "DeepSeek-V4-Pro",
"limit": {
"context": 1048576,
"output": 262144
},
"options": {
"reasoningEffort": "max",
"thinking": {
"type": "enabled"
}
}
}
}
}
}

Plugins

No response

OpenCode version

1.14.22

Steps to reproduce

1. opencode
2. talk 3 turn make it into think

Screenshot and/or share link

https://opncd.ai/share/pZUUp39V

Operating System

Windows 11

Terminal

powershell

[github-actions]

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

• Support DeepSeek V4 Thinking Mode with reasoning_content handling #24114: Support DeepSeek V4 Thinking Mode with reasoning_content handling
• DeepSeek V4 Flash: reasoning_content must be passed back to API when using thinking mode #24130: DeepSeek V4 Flash: reasoning_content must be passed back to API when using thinking mode
• DeepSeek thinking mode: reasoning_content must be passed back to API on conversation continuation #24104: DeepSeek thinking mode: reasoning_content must be passed back to API on conversation continuation
• [Bug] DeepSeek V4 fails with 'reasoning_content must be passed back' error in multi-turn conversations #24124: [Bug] DeepSeek V4 fails with 'reasoning_content must be passed back' error in multi-turn conversations
• deepseek-v4-pro model ID is not recognized as a thinking model, causing reasoning_content errors even with interleaved configured #24097: deepseek-v4-pro model ID is not recognized as a thinking model, causing reasoning_content errors even with interleaved configured

Please check if any of these existing issues already covers your problem before continuing.

[ai-llt]

This issue has existed for a long time and has never been fixed.