📄 中文摘要
OpenAI 于2026年3月5日发布了GPT-5.4，这是一个标志性的版本更新。GPT-5.4是首个将专业工作质量、编程能力、原生计算机使用和1.05M上下文API支持相结合的主流推理模型。这一更新显著提升了模型在处理复杂多步骤任务时的能力，适用于文档、电子表格、网络应用、代码库和工具链等多种场景。因此，GPT-5.4被认为是OpenAI在专业工作中最全面的模型，能够满足研究、写作等多种需求。
OpenAI GPT-5.4 完全指南：基准测试、应用案例、定价、API 及 GPT-5.4 Pro 比较
📄 English Summary
OpenAI GPT-5.4 Complete Guide: Benchmarks, Use Cases, Pricing, API, and GPT-5.4 Pro Comparison
OpenAI released GPT-5.4 on March 5, 2026, marking a significant update in its model lineup. This version is the first mainline reasoning model that integrates professional work quality, advanced coding capabilities from GPT-5.3-Codex, native computer usage, and 1.05M-context API support into a single default model. This integration greatly enhances the model's ability to handle complex, multi-step tasks across various platforms, including documents, spreadsheets, web applications, codebases, and toolchains. As a result, GPT-5.4 is recognized as OpenAI's best all-around model for serious professional work, capable of fulfilling diverse needs such as research and writing.