Claude Opus 5 发布
英文标题：Introducing Claude Opus 5
Anthropic 发布了 Claude Opus 5，称其以约为 Claude Fable 5 一半的价格，提供接近前沿水平的智能能力，并已登上 Artificial Analysis 榜单首位。该模型定价与 Opus 4.8 相同，同时继续提供价格为基础模型两倍的“快速模式”。Opus 5 在发现网络安全漏洞方面明显增强，接近 Mythos 5，但 Anthropic 有意避免训练其漏洞利用能力。对于开发者，Anthropic 已发布专门的提示工程指南，模型展示出的主动规划和自行构建工具链能力值得关注。
中文
2026年7月24日 - 链接博客
Claude Opus 5 发布。我今天大部分时间都在离线与海獭一起划皮艇，因此还没来得及充分测试 Anthropic 的新模型 Claude Opus 5。目前的反响很积极；Anthropic 将其描述为“一个深思熟虑且主动的模型，以 Claude Fable 5 一半的价格提供接近其前沿智能水平的能力”，听起来很有前景。它目前在 Artificial Analysis 排行榜上位居第一，甚至领先于 Fable 5。
它的定价与 Opus 4.8 相同，并继续提供价格为基础模型两倍的“快速模式”。
根据发布文章中的这则轶事，它听起来可能会不懈地主动行动：
在一项 Frontier-Bench 任务中，Opus 5 获得了一张机器零件的图纸，并被要求编写代码，将其重建为一个 3D FreeCAD 模型。然而，在这项任务中，模型被刻意设置为无法直接查看该图纸。Opus 5 的回应是自行编写一套计算机视觉流水线，从原始像素中提取几何信息，随后重建了完整的机器零件。
它更擅长发现漏洞，但被有意避免训练如何利用这些漏洞。希望这意味着美国政府不会将它关停！
与其前代 Opus 4.8 一样，我们有意避免使用网络安全任务训练 Opus 5。不过，由于模型的通用能力提升，它在这些任务上的表现仍显著改善，在_发现_网络安全漏洞方面已接近 Mythos 5。然而，在_利用_这些漏洞——即将漏洞转化为实际网络威胁——方面，它仍明显落后于 Mythos 5。
Anthropic 已发布一份 Claude Opus 5 提示工程指南。
English / 原文
24th July 2026 - Link Blog
Introducing Claude Opus 5. I've been offline kayaking with sea otters for much of today so I haven't had a chance to put Anthropic's new model Claude Opus 5 through its paces yet. The buzz is positive, and Anthropic's description of it as a "thoughtful and proactive model that comes close to the frontier intelligence of Claude Fable 5 at half the price" sounds promising. It's currently leading the Artificial Analysis leaderboard, in front of even Fable 5.
It's priced the same as Opus 4.8, and continues to offer a "fast mode" at twice the cost of the base model.
Based on this anecdote in the release post it sounds like it might be relentlessly proactive:
On one Frontier-Bench task, Opus 5 was given a drawing of a machine part and asked to write code to rebuild it as a 3D FreeCAD model. However, in this task, the model was intentionally given no way to directly viewthe drawing. Opus 5 responded by writing its own computer vision pipeline to pull the geometry from the raw pixels, then reconstructed the full machine part.
It's better at finding vulnerabilities but has deliberately not been trained on how to exploit them. Hopefully this means the US government won't shut it down!
As with its predecessor, Opus 4.8, we’ve intentionally avoided training Opus 5 on cyber tasks. The model has nevertheless improved substantially on these tasks as a result of becoming more generally capable, and it comes close to Mythos 5 at finding cybersecurity vulnerabilities. However, it remains substantially behind Mythos 5 on the exploitation of those vulnerabilities—that is, in turning vulnerabilities into material cyber threats.
Anthropic have published a prompting guide for Claude Opus 5.
The first pelican I got was missing the bicycle wheels; the second attempt was better.