Claude Opus 5 正式发布。它是一款深思熟虑、积极主动的模型,以一半价格接近 Fable 5 的前沿智能水平,并在多项编程和知识工作评测中达到新的最佳水平。Opus 5 以相近或更低的单任务成本超越其他模型;在要求 AI 解决全新问题的 ARC-AGI-3 评测中,得分是次优模型的三倍。自动行为审计显示,它是目前与我们目标最一致的模型,鲁莽或欺骗行为发生率最低,对 Claude 宪法的遵循最强。其网络安全能力强于 Opus 4.8,但开发漏洞利用程序的能力仍明显落后于 Mythos 5;安全措施旨在帮助开发者发现并修复漏洞,同时阻止高风险用途。Opus 5 已向所有付费套餐和 Claude API 开放,价格与 Opus 4.8 相同;它是 Claude Max 的默认模型,也是 Claude Pro 上能力最强的模型,并提供约 2.5 倍速度的 Fast 模式。
Introducing Claude Opus 5. It's a thoughtful and proactive model that comes close to the frontier intelligence of Fable 5 at half the price.
On several coding and knowledge work evaluations, Opus 5 is the new state-of-the-art.
Opus 5 is also highly efficient. It outperforms other models for a similar or lower cost per task.
On ARC-AGI-3, an evaluation where AI models must solve novel problems, Opus 5’s score is three times as high as the next best model.
According to our automated behavioral audit, Opus 5 is our most aligned model to date. Compared to our other models, it shows the lowest rates of reckless or deceptive behavior, and the strongest adherence to Claude’s Constitution.
Opus 5 is stronger than Opus 4.8 on cybersecurity tasks. But it remains substantially behind Mythos 5 at developing exploits. Its safeguards are designed to allow developers to identify and fix software vulnerabilities, while blocking high-risk uses.
Opus 5 is available today on all paid plans and the Claude API, priced the same as Opus 4.8. It’s the default model on Claude Max, and the strongest on Claude Pro. It’s also offered in Fast mode, which runs around 2.5× the default speed. Read more:
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