GPT5.4 Error: Unknown parameter: 'reasoningSummary', Gemini3.1 Error: Invalid JSON payload received. Unknown name "$schema" at

[linonetwo]

Description

I use https://github.com/alibaba/higress/ to directly proxy the API request to OpenAI, and when chat with it, it shows error:

Unknown parameter: 'reasoningSummary'.

Also, gemini errors

Invalid JSON payload received. Unknown name "$schema" at 'tools[0].function_declarations[0].parameters': Cannot find field.
Invalid JSON payload received. Unknown name "additionalProperties" at 'tools[0].function_declarations[0].parameters': Cannot find field.
Invalid JSON payload received. Unknown name "additionalProperties" at 'tools[0].function_declarations[0].parameters.properties[0].value.items': Cannot find field.
Invalid JSON payload received. Unknown name "additionalProperties" at 'tools[0].function_declarations[0].parameters.properties[0].value.items.properties[2].value.items': Cannot find field.
Invalid JSON payload received. Unknown name "ref" at 'tools[0].function_declarations[0].parameters.properties[0].value.items.properties[2].value.items': Cannot find field.
Invalid JSON payload received. Unknown name "$schema" at 'tools[0].function_declarations[1].parameters': Cannot find field.
Invalid JSON payload received. Unknown name "additionalProperties" at 'tools[0].function_declarations[1].parameters': Cannot find field.
Invalid JSON payload received. Unknown name "$schema" at 'tools[0].function_declarations[2].parameters': Cannot find field.
Invalid JSON payload received. Unknown name "additionalProperties" at 'tools[0].function_declarations[2].parameters': Cannot find field.
Invalid JSON payload received. Unknown name "$schema" at 'tools[0].function_declarations[3].parameters': Cannot find field.
Invalid JSON payload received. Unknown name "additionalProperties" at 'tools[0].function_declarations[3].parameters': Cannot find field.
Invalid JSON payload received. Unknown name "$schema" at 'tools[0].function_declarations[4].parameters': Cannot find field.
Invalid JSON payload received. Unknown name "additionalProperties" at 'tools[0].function_declarations[4].parameters': Cannot find field.
Invalid JSON payload received. Unknown name "$schema" at 'tools[0].function_declarations[5].parameters': Cannot find field.
Invalid JSON payload received. Unknown name "additionalProperties" at 'tools[0].function_declarations[5].parameters': Cannot find field.
Invalid JSON payload received. Unknown name "$schema" at 'tools[0].function_declarations[6].parameters': Cannot find field.
Invalid JSON payload received. Unknown name "additionalProperties" at 'tools[0].function_declarations[6].parameters': Cannot find field.
Invalid JSON payload received. Unknown name "$schema" at 'tools[0].function_declarations[7].parameters': Cannot find field.
Invalid JSON payload received. Unknown name "additionalProperties" at 'tools[0].function_declarations[7].parameters': Cannot find field.
Invalid JSON payload received. Unknown name "$schema" at 'tools[0].function_declarations[8].parameters': Cannot find field.
Invalid JSON payload received. Unknown name "additionalProperties" at 'tools[0].function_declarations[8].parameters': Cannot find field.
Invalid JSON payload received. Unknown name "$schema" at 'tools[0].function_declarations[9].parameters': Cannot find field.
Invalid JSON payload received. Unknown name "additionalProperties" at 'tools[0].function_declarations[9].parameters': Cannot find field.
Invalid JSON payload received. Unknown name "additionalProperties" at 'tools[0].function_declarations[9].parameters.properties[0].value.items': Cannot find field.
Invalid JSON payload received. Unknown name "$schema" at 'tools[0].function_declarations[10].parameters': Cannot find field.
Invalid JSON payload received. Unknown name "additionalProperties" at 'tools[0].function_declarations[10].parameters': Cannot find field.

Plugins

No response

OpenCode version

v1.3.0

Steps to reproduce

1. First use custom provider, put URL like higress.xxx.org/v1
2. chat with them
3. claude models works
4. gpt-5.4 has error
5. gemini has error

Screenshot and/or share link

No response

Operating System

No response

Terminal

No response

[github-actions]

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

• [Bug] Custom OpenAI-compatible provider errors with "Unknown parameter: 'reasoningSummary'" for GPT-5 series models #13546: Same "Unknown parameter: 'reasoningSummary'" error with custom OpenAI-compatible provider (closed)
• Bug: gpt-5 defaults + @ai-sdk/openai-compatible path sends incompatible reasoning params #16154: Same reasoningSummary/reasoningEffort incompatibility on @ai-sdk/openai-compatible path (closed)
• gpt-5.3-codex-spark fails on official OpenAI path with unsupported reasoning.summary #18791: Related reasoningSummary unsupported parameter error (open)
• [FEATURE]:Support Gemini models with Function Calling through incompatible OpenAI-compatible proxies #11479: Same Gemini $schema/additionalProperties JSON Schema errors through OpenAI-compatible proxy (open)

If your issue is not addressed by any of the above, please add details distinguishing it from those reports.