告诉 HN：Anthropic 不再允许用户固定到特定的模型版本
4 分•作者: baobabKoodaa•4 个月前
我刚收到 Anthropic 的邮件，通知他们将弃用表现良好的模型 claude-sonnet-4-5-20250929，并强制所有用户使用更差的新模型 claude-sonnet-4-6。好吧，我心想，没问题。然后我去了他们的模型页面查看该模型的最新版本。他们根本没有列出任何版本！他们唯一列出的版本是 "claude-sonnet-4-6"，而根据他们自己的文档，这个版本始终指代 Claude Sonnet 4.6 的最新版本。这意味着我使用 Sonnet 构建的客户端应用程序将在模型版本更改时，在不确定的时间点随机崩溃。我尝试联系 Anthropic 的客户支持，但当然，他们没有任何真人，只有 AI 聊天机器人（名为 "Fin" 的聊天机器人，外包自 Intercom，而 Intercom 以制作糟糕的聊天机器人而臭名昭著）。他们的 AI 聊天机器人告诉我，如果我使用版本 "claude-sonnet-4-6"，它将始终指代最新的模型版本，所以我应该固定到特定版本 "claude-sonnet-4-6"。但这两个字符串是相同的。Anthropic 的 AI 聊天机器人似乎无法理解它们是相同的字符串。我还检查了他们 API 游乐场中的模型列表，也检查了文档，现在绝对没有任何方法可以固定到特定版本了。
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I just got an email from Anthropic telling me they are deprecating their good model, which actually works well, claude-sonnet-4-5-20250929, and will be forcing all users to use the worse newer model, claude-sonnet-4-6. Okay, fine, I thought. Then I went to their model page to check what is the latest version of that model. They don't list any! The only version they list is "claude-sonnet-4-6", which, according to their own documentation, always refers to the newest version of Claude Sonnet 4.6. This means that the client applications I've built using Sonnet will unpredictably break at random times when the model version changes. I tried contacting Anthropic customer support, but of course they don't have any actual humans, they only have an AI chatbot (chatbot called "Fin", OUTSOURCED from Intercom, which is notoriously bad at making chatbots). Their AI chatbot tells me that if I use the version "claude-sonnet-4-6", it will always refer to the latest model version, so I should instead pin to the specific version, "claude-sonnet-4-6". Those strings are the same. Anthropic's AI chatbot does not seem to comprehend that they are the same strings. I also checked the model listing in their API playground and I checked the docs, and there's absolutely no way to pin a specific version anymore.