March 18th message, todayOpenAI GPT-54 Mini and GPT-54 nano were officially releasedModelIT IS OFFICIALLY CALLED "A SMALL MODEL WITH THE GREATEST CAPACITY SO FAR". THE TWO MODELS INTRODUCE THE CORE GPT-54 COMPETENCIES INTO A LIGHTER STRUCTURE, DESIGNED FOR HIGH-VOLUME, DELAYED-SENSITIVE WORK LOADS。
GPT-5.4 Mini has been significantly higher than GPT-5 Mini in code writing, reasoning, multi-modular understanding, and tool calls, and has been operating at more than two times faster. In several baseline tests, performance has been close to the larger flagship model GPT-5.4
GPT-5.4 nano is the lightest and fastest version of the GPT-5.4 series, located in the sub-intelligence scene of classification, data extraction, content sorting and handling simple support tasks。
With respect to pricing, the API price for GPT-54 Mini is $0.75 per 1 million input token $0.75 per 1 million output token 4.50 per 1 million output and 400K in context window. In comparison, GPT-54 is priced at token $2.50 per 1 million input and $15.00 output, with significant cost differentials。
GPT-54 nano is open to API users only, with lower pricing at $0.20 per 1 million input token and $1.25 per 1 million output。