The text series covers OpenAI-compatible text interfaces, Claude native message interface, Gemini native interface, OpenAI Responses, multimodal input, model list, and Realtime.
Invalid request parameters, such as a non-existent model name, invalid message structure, or invalid tool definition
401
Missing, invalid, or expired API Key
402
Quota insufficient
413
Request body too large
429
Request rate limit exceeded
500
Internal server error
503
Upstream unavailable or the system is temporarily overloaded
If an interface page marks a parameter as “optional,” it does not mean that all models support that field. Whether it is ultimately passed through and takes effect still depends on the capabilities of the actual channel it is distributed to.
