What is ChatGPT 5.4? Check features, capabilities, and what Open AI’s new model can do

OpenAI has introduced a new artificial intelligence model called GPT-5.4, which is now available in ChatGPT, the company’s API, and its coding tool Codex.

OpenAI's new GPT-5.4 clobbers humans on pro-level work in tests - by 83%

GPT-5.4 is also more reliable, producing 18% fewer errors and 33% fewer false claims than GPT-5.2, according to OpenAI.
eWeek

GPT-5.4 Is Here: OpenAI’s ‘Most Capable and Efficient’ Model for Professional Work

OpenAI launches GPT-5.4, calling it its most capable and efficient AI model yet, with AI agents, computer control, improved reasoning, and a 1M-token context.