GPT-5.4 mini

Economic variant of 5.4. Sub-dollar per 1M input tokens, good balance for chatbots.

ChatOpenAI272k tokens$0.8175 / $4.9053 · 1M

openai/gpt-5.4-mini

Context
272k tokens
Completion cap
128,000
Tools
Yes
JSON
Yes
Released
2026-03-17
ZDR
Verified

Call it from Geek Hub

Same OpenAI SDK. Change the base URL and the model id.

curl https://api.geekhub.mx/v1/chat/completions \
  -H "Authorization: Bearer $GEEKHUB_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "openai/gpt-5.4-mini",
    "messages": [{"role": "user", "content": "Hola"}]
  }'
Get an API key

Frequently asked questions

What is GPT-5.4 mini?
Economic variant of 5.4. Sub-dollar per 1M input tokens, good balance for chatbots. GPT-5.4 mini runs on the Geek Hub API (OpenAI-compatible). Model id: openai/gpt-5.4-mini.
Is GPT-5.4 mini free?
No. Input is $0.8175 per 1M tokens and output is $4.9053 per 1M tokens on Geek Hub (markup included).
What is the context length of GPT-5.4 mini?
GPT-5.4 mini has a 272k tokens context window. It supports up to 128,000 completion tokens.
Does GPT-5.4 mini support tool calling and structured outputs?
GPT-5.4 mini accepts tools and tool_choice for function calling. It also supports structured outputs via a JSON schema in response_format.
When was GPT-5.4 mini released?
GPT-5.4 mini was released on 2026-03-17.

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