我们的使命是确保通用人工智能惠及全人类。我们正在推出ChatGPT的更新，以改善日常对话，同时扩大免费用户的访问权限。
对于Plus和Pro用户，我们正在更新Chat中的GPT‑5.6 Sol，使其在事实方面更加可靠，并提供更聚焦的回答。一个新的滑块让您可以选择ChatGPT在每次回复中投入多少思考。
对于免费用户，我们将默认模型更新为GPT‑5.6 Luna，并通过无限文本聊天扩大访问权限。对于需要更多思考的问题，一个新的“思考”按钮可让您针对更困难的问题使用更高层次的推理。
GPT‑5.6 Sol，针对您使用ChatGPT的方式进行了调优
每周，有10亿人使用ChatGPT处理从快速提问和网络搜索到规划、研究、建议和复杂决策的各种事务。我们已更新GPT‑5.6 Sol，以更好地支持这一系列需求。它提供更聚焦的回答，根据问题调整详细程度，避免不必要的格式，并在简单同意无益时提供有用的纠正。对于Plus和Pro用户，同一模型现在同时支持即时响应和更深层次的推理，创造一致的体验。
更聚焦的回答
ChatGPT中GPT‑5.6 Sol的更新旨在为您提供更直接的回复，使用更紧凑的格式，并在额外细节无帮助时避免添加。
对于快速提问，这意味着直接给出答案并附上您所需的背景信息。对于多步骤规划、研究或写作等更复杂的工作，则意味着提供更完整的回复，同时保持主要建议清晰明确。
更可靠的事实
有用的答案需要确保事实准确。新的GPT‑5.6 Sol旨在减少错误——尤其是当答案依赖于日期、数字、来源、规则或假设时——通过更好地利用找到的来源来回答您的问题。
在一项针对需要事实细节的财务、医疗和法律提示的内部评估中，与GPT‑5.5 Instant相比，GPT‑5.6 Luna包含至少一个事实错误的回复减少了约62%，GPT‑5.6 Sol减少了约68%。
从快速回答到深度思考，更加一致
通过这次更新，我们还使ChatGPT的即时和思考体验更加接近，在不同类型的对话中创造更一致的语气和行为。当您从即时切换到更高努力时，应该感觉像是模型花了额外时间提供更全面的回答——而不是切换到具有自身语气或风格的不同模型。
Plus和Pro用户可以在ChatGPT的网页、移动端和桌面端使用新的滑块，选择ChatGPT在回答中投入多少思考。日常问题保持快速，或将滑块上移以进行规划、研究、写作、编码或需要更多思考的决策。
扩大免费用户的访问权限
我们正在扩大免费用户对最新模型的访问权限，使用GPT‑5.6 Luna提供无限文本聊天，并新增“思考”按钮以应对更困难的问题。
对于需要更深层次推理的问题，免费用户可以点击新的“思考”按钮，让GPT‑5.6 Luna有更多时间来处理答案。
安全性与可用性
Plus和Pro用户从今天起即可在ChatGPT中访问更新版本的GPT‑5.6 Sol和新的滑块。
GPT‑5.6 Luna将于本周成为Free和Go用户的默认模型。从下周开始，他们还将获得无限文本聊天，并可使用新的“思考”按钮处理更困难的问题（受滥用防护措施约束）。文件上传、图像和其他工具仍将适用限制。
由于此版本的GPT‑5.6 Sol针对日常聊天进行了优化，它仅在ChatGPT的聊天体验中可用。支持Work和Codex的GPT‑5.6 Sol版本不在此次发布范围内。
您可以在我们的系统卡(在新窗口中打开)中找到有关安全培训和评估的更多详细信息，其中概述了我们为支持我们认为未满18岁的用户而引入的额外措施。对于这些用户，我们训练模型避免浪漫角色扮演、年龄限制挑战，以及将自身呈现为现实世界关系的替代品。此外，我们围绕性内容、饮食失调和身体形象风险、年龄限制商品、危险活动和暴力画面应用了适龄边界。最后，当青少年可能需要支持时，模型鼓励他们与可信赖的人建立联系。我们通过系统级保护强化了这种训练，并新增了针对18岁以下用户模型表现的评估，同时持续改进该领域的模型响应。
为更多人提供更多智能
这是迈向更丰富智能的具体一步：让我们的最新模型更广泛可用，提高人们获得答案的实用性和可靠性，并让免费用户不受速率限制地继续文本聊天。访问塑造机会，这次更新让更多人能够持续提问、发展想法，并在需要时获得帮助。
Our mission is to ensure that artificial general intelligence benefits all of humanity. We’re introducing updates to ChatGPT that improve everyday conversations while expanding access for Free users.
For Plus and Pro users, we’re updating GPT‑5.6 Sol in Chat to be more reliable with facts and provide more focused answers. A new slider lets you choose how much thought ChatGPT puts into each response.
For Free users, we're updating the default model to GPT‑5.6 Luna and expanding access with unlimited text chats. For questions that need more thought, a new Think button lets you access higher reasoning for harder questions.
GPT‑5.6 Sol, tuned for how you use ChatGPT
Every week, 1 billion people turn to ChatGPT for everything from quick questions and web searches to planning, research, advice, and complex decisions. We’ve updated GPT‑5.6 Sol to better support that full range. It delivers more focused answers, adapts its level of detail to the question, avoids unnecessary formatting, and offers a helpful correction when simply agreeing wouldn’t be useful. For Plus and Pro users, the same model now powers both Instant responses and deeper reasoning, creating one consistent experience.
More focused answers
The updates to GPT‑5.6 Sol in ChatGPT are designed to give you more direct responses, use tighter formatting, and avoid extra detail when it does not help.
For a quick question, that means a direct answer with the context you need. For more involved work like multi-step planning, research or writing, it means a fuller response that keeps the main recommendation clear.
More reliable facts
A useful answer needs to get the facts right. The new GPT‑5.6 Sol is designed to make fewer mistakes—especially when answers depend on dates, numbers, sources, rules, or assumptions—by better using the sources it finds to answer your question.
In an internal evaluation of financial, medical, and legal prompts requiring factual detail, responses containing at least one factual error were about 62% less common with GPT‑5.6 Luna and 68% less common with GPT‑5.6 Sol than with GPT‑5.5 Instant.
More consistent, from quick answers to deeper thinking
With this update, we’re also bringing ChatGPT’s Instant and Thinking experiences closer together, creating a more consistent tone and behavior across different kinds of conversations. When you move from Instant to higher effort, it should feel like the model is taking extra time for a more comprehensive answer—not like you’re switching to a different model with its own tone or style.
Plus and Pro users can use the new slider in ChatGPT on web, mobile, and desktop to choose how much thought ChatGPT puts into an answer. Keep it quick for everyday questions, or move the slider up for planning, research, writing, coding, or decisions that need more thought.
Expanding access for free users
We’re expanding access to our latest models for free users with unlimited text chats using GPT‑5.6 Luna, plus a new Think button for harder questions.
For questions that require deeper reasoning, Free users can tap the new Think button to give GPT‑5.6 Luna more time to work through the answer.
Safety and availability
Plus and Pro users can access the updated version of GPT‑5.6 Sol and the new slider in ChatGPT starting today.
GPT‑5.6 Luna will become the default model for Free and Go users this week. Starting next week, they’ll also have unlimited text chats and access to a new Think button for harder questions (subject to abuse guardrails). Limits will still apply for file uploads, images and other tools.
Because this version of GPT‑5.6 Sol is optimized for everyday chats, it will only be available in the Chat experience in ChatGPT. The version of GPT‑5.6 Sol that powers Work and Codex is not changing as part of this release.
You can find more detail on safety training and evaluations in our system card(opens in a new window), which outlines additional measures we’ve introduced to support users we believe are under 18. For these users, we trained the model to avoid romantic roleplay, age-restricted challenges, and presenting itself as a substitute for real-world relationships. In addition, we applied age-appropriate boundaries around sexual content, eating disorders and body-image risks, age-restricted goods, dangerous activities, and graphic violence. Finally, the model encourages connection with trusted people when a teen may need support. We reinforced this training with system-level protections and have added new evaluations for how our models perform for users under 18, and are continuing to improve model responses in this area.
M ore intelligence for more people
This is a concrete step toward more abundant intelligence: making our latest models more widely available, improving the usefulness and reliability of the answers people get, and letting free users keep text chats going without a rate limit. Access shapes opportunity, and this update gives more people the ability to keep asking, develop an idea, and get help when they need it.
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