Anthropic发布Claude Opus 5.5：性能对标Fable
Anthropic Releases Claude Opus 5.5: Fable 5.1-Level Performance at 40% Lower Running Cost Than Opus 5
Opus系列迭代直接影响Agent开发成本与效能，40%的成本降幅和新的API限制值得开发者关注，建议评估是否迁移。
Anthropic has released Claude Opus 5.5, the first model in its new Claude 5.5 family. The team states it performs at the level of Claude Fable 5.1 on most work. It also costs 40% less to run than Opus 5 on typical workloads at default settings. On Anthropic’s own benchmarks, it leads in agentic coding, computer use, and knowledge work.
Anthropic 发布了 Claude Opus 5.5，这是其全新 Claude 5.5 系列中的首款模型。团队表示，在大多数工作中，其表现水平与 Claude Fable 5.1 相当。在默认设置下，处理典型工作负载时，其运行成本比 Opus 5 低 40%。在 Anthropic 自身的基准测试中，它在代理式编码、计算机使用和知识工作方面领先。
Is it deployable? Yes, as a managed API model. Anthropic has not released weights, so self-hosting is not an option. Developers can call claude-opus-5-5 on the Claude Platform, Amazon Web Services, Google Cloud, and Microsoft Azure. Zero data retention is available, as with previous Opus models.
是否可部署？是的，作为托管 API 模型使用。Anthropic 尚未发布权重，因此自托管不可行。开发者可以在 Claude Platform、Amazon Web Services、Google Cloud 和 Microsoft Azure 上调用 claude-opus-5-5。与之前的 Opus 模型一样，支持零数据保留。
Benchmarks: Strong Lead, Not a Clean Sweep
基准测试：强势领先，但非全面碾压
Opus 5.5 scores use adaptive thinking at max effort, with production safeguards enabled.
Opus 5.5 的基准分数是在最大努力程度下使用自适应思维得出的，并启用了生产环境的安全防护。
| Benchmark | Opus 5.5 | Fable 5.1 | Opus 5 | GPT-6 Astra |
|---|---|---|---|---|
| Terminal-Bench 4.0 | 66.4% | 55.8% | 52.3% | 57.9% |
| FrontierCode v1.1 | 54.4% | 50.3% | 48.0% | 53.3% |
| CursorBench 4.0 | 57.8% | 51.8% | 46.6% | n/r |
| GDPval-AA v2.1 (Elo) | 1846 | 1735 | 1708 | 1542 |
| OSWorld 2.0 | 81.8% | 80.7% | 74.0% | n/r |
| Terminal-Bench-Science 0.1 | 58.7% | 52.6% | 29.0% | 64.6% |
| AutomationBench | 40.0% | 31.4% | 26.9% | 41.4% |
| 基准测试 | Opus 5.5 | Fable 5.1 | Opus 5 | GPT-6 Astra |
|---|---|---|---|---|
| Terminal-Bench 4.0 | 66.4% | 55.8% | 52.3% | 57.9% |
| FrontierCode v1.1 | 54.4% | 50.3% | 48.0% | 53.3% |
| CursorBench 4.0 | 57.8% | 51.8% | 46.6% | n/r |
| GDPval-AA v2.1 (Elo) | 1846 | 1735 | 1708 | 1542 |
| OSWorld 2.0 | 81.8% | 80.7% | 74.0% | n/r |
| Terminal-Bench-Science 0.1 | 58.7% | 52.6% | 29.0% | 64.6% |
| AutomationBench | 40.0% | 31.4% | 26.9% | 41.4% |
Terminal-Bench 4.0 is reported at xhigh effort for Opus 5.5. GPT-6 Astra still leads on Terminal-Bench-Science and AutomationBench. Zapier ran AutomationBench without fallback models, so safeguard interventions counted as failures. Anthropic also cautions that benchmark margins are becoming a less reliable guide. In its own use, the gap to Fable 5.1 is narrower than the scores suggest.
Opus 5.5 在 Terminal-Bench 4.0 上的报告成绩为极高努力程度。GPT-6 Astra 在 Terminal-Bench-Science 和 AutomationBench 上仍然领先。Zapier 运行 AutomationBench 时未使用回退模型，因此安全干预被计为失败。Anthropic 还警告称，基准测试的差距正变得不那么可靠。在实际使用中，其与 Fable 5.1 的差距比分数显示的要小。
The cost-adjusted results are more telling. At default (medium) effort, Opus 5.5 scores 54.6% on FrontierCode. That beats GPT-6 Astra’s top score of 53.3% at about a fifth of the cost per task. On CursorBench, medium effort scores 52.5%. That is 11 points above GPT-5.6 Sol’s best, at about a third of the cost.
经过成本调整的结果更具说服力。在默认（中等）努力程度下，Opus 5.5 在 FrontierCode 上的得分为 54.6%。这击败了 GPT-6 Astra 的最高分 53.3%，且每项任务的成本约为其的五分之一。在 CursorBench 上，中等努力程度的得分为 52.5%。这比 GPT-5.6 Sol 的最佳成绩高出 11 分，而成本仅为后者的约三分之一。
Pricing and Speed
定价与速度
Opus 5.5 needs less compute to serve than Opus 5, and pricing reflects that.
Opus 5.5 提供服务所需的计算资源少于 Opus 5，定价也反映了这一点。
| Per 1M tokens | Opus 5.5 | Opus 5 |
|---|---|---|
| Input | $4 | $5 |
| Output | $20 | $25 |
| Cache reads | $0.20 | $0.50 |
| Cache writes | $5 | $6.25 |
| 每百万令牌 | Opus 5.5 | Opus 5 |
|---|---|---|
| 输入 | $4 | $5 |
| 输出 | $20 | $25 |
| 缓存读取 | $0.20 | $0.50 |
| 缓存写入 | $5 | $6.25 |
Cache reads make up most agentic and coding costs, and they drop 60%. Opus 5.5 also uses fewer tokens per task. Together, that nets out to the 40% cost reduction. Output generation is more than 30% faster than Opus 5. Fast mode in Claude Code and the Claude Platform offers up to 2.5x speed at $8 input and $40 output per million tokens.
缓存读取构成了大部分代理式和编码成本，其费用下降了 60%。Opus 5.5 每项任务使用的令牌也更少。综合起来，实现了 40% 的成本降低。输出生成速度比 Opus 5 快 30% 以上。Claude Code 和 Claude Platform 中的快速模式提供高达 2.5 倍的速度，价格为每百万令牌输入 $8、输出 $40。
Anthropic is also raising five-hour usage limits on Pro, Max, Team, and seat-based Enterprise plans. Subscribers get a rate limit reset they can save and use later.
Anthropic 还提高了 Pro、Max、Team 以及基于席位的企业版计划的五小时使用限制。订阅用户将获得速率限制重置，他们可以保存并在稍后使用。
What Early Testers Reported
早期测试者的反馈
- One tester completed a 680,000-line code migration in less than a day.
- Another audited and fixed a 200,000-line codebase in under 3 hours. Opus 5 took over 20 hours and 2.5x the tokens.
- In an internal C to Rust port of HAProxy, Opus 5.5 finished in 9.5 hours. Fable 5.1 took 12 hours, and Opus 5.5 cost 51% less.
- Deloitte says Opus 5.5 at lowest effort caught 72% of known review bugs. Opus 5 at high effort caught 56%.
- In a hard-to-source earnings report test, 16 of 18 Opus 5.5 reports cleared Anthropic’s quality bar. Fable 5.1 and Opus 5 never did.
- 一名测试者在不到一天的时间内完成了68万行代码的迁移。
- 另一名测试者在不到3小时内审计并修复了一个20万行的代码库。Opus 5 耗时超过20小时，且消耗的 token 数量是其2.5倍。
- 在 HAProxy 从 C 语言移植到 Rust 的内部项目中，Opus 5.5 耗时9.5小时完成。Fable 5.1 耗时12小时，而 Opus 5.5 的成本降低了51%。
- 德勤表示，以最低工作量运行的 Opus 5.5 发现了72%的已知审查缺陷。而以高工作量运行的 Opus 5 仅发现了56%。
- 在一个难以获取样本的收益报告测试中，18份 Opus 5.5 生成的报告中有16份达到了 Anthropic 的质量标准。Fable 5.1 和 Opus 5 从未达到过该标准。
Writing style also changed. Opus 5.5 puts key information first, uses less jargon, and follows the writing rules you give it.
写作风格也发生了变化。Opus 5.5 将关键信息置于首位，减少使用行话，并遵循你提供的写作规则。
Safety, Safeguards, and API Changes
安全性、保障措施及 API 变更
Opus 5.5 is Anthropic’s first release since CEO Dario Amodei called for pacing the frontier. External evaluators including METR and Frontier Design tested it before release. It posts the best score to date on Anthropic’s automated behavioral audit, which covers nearly 2,000 scenarios. In a new containment test, it tried to circumvent boundaries about 85% less often than Opus 5. Anthropic also notes the model often suspects it is being evaluated.
Opus 5.5 是 CEO Dario Amodei 呼吁对前沿技术进行节奏控制以来的首个发布版本。包括 METR 和 Frontier Design 在内的外部评估机构在发布前对其进行了测试。它在 Anthropic 的自动化行为审计中取得了迄今为止的最佳分数，该审计涵盖了近2,000个场景。在新的隔离测试中，它试图规避边界的情况比 Opus 5 少了约85%。Anthropic 还指出，该模型经常怀疑自己正在被评估。
Its biology and cyber capabilities are comparable to Claude Mythos 5.1. So Opus 5.5 ships with safeguards similar to Fable 5.1:
其生物技术和网络能力与 Claude Mythos 5.1 相当。因此，Opus 5.5 配备了与 Fable 5.1 类似的保障措施：
- Cybersecurity: Routine bug finding and fixing works. Most other cybersecurity tasks are re-routed to Opus 4.8. The Cyber Verification Program will expand to Opus 5.5.
- Biology: Vetted organizations can apply to the Life Sciences Verification Program.
- Distillation: Preserved thinking stops API users from editing prior context to extract reasoning. It applies to API accounts created on or after August 31, 2026.
- 网络安全：常规的错误查找和修复功能可用。大多数其他网络安全任务被重定向至 Opus 4.8。网络安全验证计划将扩展至 Opus 5.5。
- 生物技术：经过审核的组织可以申请生命科学验证计划。
- 蒸馏防护：保留思考过程可防止 API 用户通过编辑之前的上下文来提取推理逻辑。此措施适用于2026年8月31日或之后创建的 API 账户。
Two more changes affect integrations. Thinking can no longer be disabled. Outputs also carry watermarking for EU AI Act compliance. Full details are in the Opus 5.5 System Card.
还有两项变更影响集成。思考功能不再可以禁用。输出内容还带有水印，以符合欧盟《人工智能法案》的要求。详细信息请参阅 Opus 5.5 系统卡片。
Interactive Explainer
交互式解释器
Key Takeaways
关键要点
- Opus 5.5 matches Fable 5.1 on most work and beats both Opus 5 and Fable 5.1 on nearly every reported benchmark.
- API pricing drops to $4/$20 per 1M tokens, and cache reads fall 60% to $0.20.
- Anthropic puts typical workload savings at 40%, with output over 30% faster than Opus 5.
- Cyber and biology requests hit Fable 5.1-class safeguards, and thinking cannot be switched off.
- Closed weights: claude-opus-5-5 runs via Claude Platform, AWS, Google Cloud, and Azure.
- 在处理大多数工作时，Opus 5.5 的表现与 Fable 5.1 持平，并且在几乎所有报告的基准测试中都优于 Opus 5 和 Fable 5.1。
- API 价格降至每百万 token 4美元/20美元，缓存读取费用降低60%，至0.20美元。
- Anthropic 估计典型工作负载可节省40%的费用，且输出速度比 Opus 5 快30%以上。
- 网络和生物技术请求受到 Fable 5.1 级别的保障措施限制，且思考功能无法关闭。
- 闭源模型：claude-opus-5-5 通过 Claude Platform、AWS、Google Cloud 和 Azure 运行。
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