OpenAI Developers(@OpenAIDevs)

GPT-5.5 is available in the Responses and Chat Completions APIs with a 1M context window. GPT-5.5-p...

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GPT-5.5 is available in the Responses and Chat Completions APIs with a 1M context window.

GPT-5.5-p...

TL;DR · AI 摘要

OpenAI发布GPT-5.5,支持1M上下文窗口,并推出更高精度的GPT-5.5-pro版本。

核心要点

  • GPT-5.5在Responses和Chat Completions API中提供1M上下文窗口。
  • GPT-5.5-pro专为高精度任务优化,适用于Responses API。
  • 新版本可能显著提升复杂任务处理能力。
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GPT-5.5-pro is also available in the Responses API for higher-accuracy work.

https://t.co/Q7PLCo4pse" / X

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GPT-5.5 is available in the Responses and Chat Completions APIs with a 1M context window. GPT-5.5-pro is also available in the Responses API for higher-accuracy work.

![Image 3 Introducing GPT-5.5](https://t.co/Q7PLCo4pse)

From openai.com

6:20 PM · Apr 24, 2026