GPT-5.5 Instant

关于 GPT-5.5 Instant

OpenAI 于 2026 年 5 月 5 日发布的快速日常主力模型。该模型具备 1,000,000 token 的上下文窗口，拥有先进的记忆源引用机制，生成的文本紧凑简洁，幻觉率（hallucination profiles）大幅降低了 52.5%。在 API 中可通过别名 “chat-latest” 进行原生调用。

技术规格

专有模型的架构规格未公开。

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关于 GPT-5.5 Instant

GPT-5.5 Instant is OpenAI's high-speed, cost-efficient default model tier launched globally for ChatGPT and developers. Engineered to dramatically reduce latency and cut hallucinations by over 50% in high-stakes fields like medicine and law, it uses roughly 30% fewer words per response than its predecessor line while supporting integrated memory sources and advanced tool calling.

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