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OpenAI

OpenAI has released GPT-5.4 mini, now available in ChatGPT, Codex, and the API. The model is optimized for coding, computer use, multimodal understanding, and subagent tasks, and runs 2x faster than GPT-5 mini.

GPT-5.4 mini is available today in ChatGPT, Codex, and the API.

Optimized for coding, computer use, multimodal understanding, and subagents. And it’s 2x faster than GPT-5 mini.

<p>GPT-5.4 mini is available today in ChatGPT, Codex, and the API.

Optimized for coding, computer use, multimodal understanding, and subagents. And it’s 2x faster than GPT-5 mini.</p>

jason liu

A brief post expressing enthusiasm about subagents in AI systems, with no substantive technical content provided.