Changelog

GPT-5.4, GPT-5.4 Mini, and GPT-5.4 Nano are now available

Three new OpenAI models are now available in the General Configuration AI Model selector and through the external API:

• GPT-5.4 — OpenAI’s latest flagship model.
• GPT-5.4 Mini — compact variant balancing performance and cost.
• GPT-5.4 Nano — lightweight variant optimized for speed and cost.

You can also set these models via the API when creating or updating an agent:

1
"agent": {
2
  "llm": "gpt-5.4"
3
}