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POST
GPT-5.4 Mini
gpt-5.4-mini is the lowest-priced general text route in the GPT-5.4 line. Use it for frequent chat, extraction, classification, and development-tool requests where cost matters.
string
required
Set to gpt-5.4-mini.
array
required
Ordered system, user, and assistant messages.
boolean
default:"false"
Set to true to receive server-sent events.

Request

Read generated text from choices[0].message.content. See Chat Completions protocol for streaming and response fields.

Compatible protocol paths

Start with gpt-5.4-mini while wiring a new integration, then compare a larger route on your actual prompts before changing production defaults.