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    "body": "GPT-5.1 是 OpenAI 于 2025 年 11 月 12 日发布的 GPT-5 同代迭代，主打自适应推理与更暖的对话风格。[^s1]\n\n## 发布背景\n发布时上下文窗口为400,000 tokens，最大输出为128,000 tokens，API 标识为 gpt-5.1。[^s1]\nGPT-5 世代内的迭代升级，非新一代；官方明确称仍属于 GPT-5 generation，特点是更暖、更会跟随指令和自适应推理。[^s1]\n\n## 定价与获取\n每百万 token 输入 1.25 美元、输出 10 美元。[^s1]\n\n## 性能表现\n以下为OpenAI公布的自家评测结果，尚未经独立复现。[^s1]\n- SWE-bench Verified：76.3%（GPT-5 为 72.8%）[^s1]\n- GPQA Diamond (no tools)：88.1%（GPT-5 为 85.7%）[^s1]\n- AIME 2025 (no tools)：94.0%（GPT-5 为 94.6%）[^s1]\n- MMMU：85.4%（GPT-5 为 84.2%）[^s1]\n\n## 主要特点\n- ChatGPT 分 GPT-5.1 Instant 与 GPT-5.1 Thinking，API 对应 gpt-5.1-chat-latest 与 gpt-5.1；另有 gpt-5.1-codex 及 gpt-5.1-codex-mini 等 Codex 变体，没有通用 gpt-5.1-mini 或 gpt-5.1-nano。[^s1]\n- 后继 GPT-5.2 于 2025-12-11 发布；GPT-5.1 已于 2026-10-01 被宣布弃用，API 定于 2027-04-01 下线，官方推荐替代为 gpt-6-sol。[^s1]\n\n## 定位与后续\nGPT-5 的同代迭代，介于 2025-08 的 GPT-5 与 2025-12-11 的 GPT-5.2 之间，主打自适应推理、更暖的对话风格与编码效率。 其前代为[[work_gpt_5|GPT-5]]。[^s1]",
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