Gate News: On March 18, OpenAI released two new models, GPT-5.4 mini and GPT-5.4 nano, designed for agent, programming, and multimodal workflow scenarios. The API pricing for GPT-5.4 mini is $0.75 for input and $4.50 for output per million tokens, which is 2.25 to 3 times more expensive than the previous GPT-5 mini. GPT-5.4 nano is priced at $0.20 for input and $1.25 for output, up to four times the cost of the previous generation. In terms of performance, GPT-5.4 mini achieves 54.4% on the SWE-Bench Pro programming benchmark, close to the flagship GPT-5.4 at 57.7%, and significantly surpasses the previous GPT-5 mini at 45.7%. Both models support around 400,000 token context windows. The mini version runs more than twice as fast as its predecessor and supports features like computer control, tool invocation, and web search. ChatGPT free version and Go users will be the first to access reasoning capabilities powered by GPT-5.4 mini. The mini has also been integrated with GitHub Copilot and Codex, with Codex consuming only 30% of GPT-5.4 quota. The nano model is available only via API and is suitable for lightweight tasks such as classification and data extraction.
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