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Anthropic发布Claude Opus 5.5：任务成本降40%、输出提速30%，9项测试中7项领先GPT-6 Astra
Anthropic发布Claude 5.5系列首个模型Opus 5.5，官方称默认设置下典型任务成本较上代Opus 5降低40%，输出速度提升超30%，已上线Claude及AWS、Google Cloud、Azure。官方公布的9项测试中，Opus 5.5在7项领先Fable 5.1、Opus 5及OpenAI的GPT-6 Astra、GPT-5.6 Sol，三项编程测试得分最高：Terminal-Bench 4.0为66.4%、FrontierCode v1.1为54.4%、CursorBench 4.0为57.8%，但在业务流程与研究Agent测试中落后于GPT-6 Astra。长任务方面，内部测试称其用9.5小时完成HAProxy从C到Rust的重写，成本较Fable 5.1低51%；财报核查测试通过18份中的16份。定价为每百万输入/输出token 4美元/20美元，较Opus 5降20%，缓存读取成本降60%。安全方面称绕过隔离边界的频率较Opus 5降低约85%，但多数网络安全任务仍交由Opus 4.8。发布不到两小时OpenAI推出GPT-6 Sol和Luna，Sonnet 5.5与Haiku 5.5计划数周内发布。
AI推荐理由
内容为Anthropic发布Claude Opus 5.5的转述报道，包含具体定价（输入/输出每百万token 4/20美元）、速度与成本变化、9项测试中7项领先、Terminal-Bench 4.0 66.4%等可核对指标，以及HAProxy C转Rust、68万行代码迁移等长任务案例，信息密度较高。但来源为AIbase聚合站，非官方首发，正文未提供原始评测链接，且部分表述（如Artificial Analysis排名、安全数据）无法在片段内验证，需保留不确定性。对关注模型能力、Agent成本与部署效率的开发者有较高参考价值。
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正文
Anthropic Releases Claude Opus5.5: Task Cost Reduced by 40%, Output Speed Increased by 30% - 7 Out of 9 Tests Lead Over GPT-6 Astra
AIbase基地
Published inAI News · 5 min read · Sep 23, 2026
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Anthropic released the first model of the Claude 5.5 series, Opus 5.5, at 12:00 AM on September 23rd. The official said that the performance of most tasks is comparable to Fable 5.1. Under default settings, the cost of typical tasks is reduced by 40% compared to the previous generation Opus 5, and the output speed is improved by more than 30%. It has been launched on Claude as well as Amazon Web Services, Google Cloud, and Microsoft Azure.
In the 9 tests officially announced, Opus 5.5 leads Fable 5.1, Opus 5, and OpenAI's GPT-6 Astra, GPT-5.6 Sol in 7 tests. In three programming tests, it achieved the highest scores: Terminal-Bench 4.0 reached 66.4%, FrontierCode v1.1 was 54.4%, and CursorBench 4.0 was 57.8%. However, it lags behind GPT-6 Astra in business process and research agent tests. On the Artificial Analysis Intelligence ranking list, it ranked first with 58 points, leading Fable 5.1 and GPT-6 Astra with 53 points each.
Long task performance was a major focus of the upgrade: in internal testing, Opus 5.5 completed the rewrite of the load balancing software HAProxy from C language to Rust in 9.5 hours, with a cost 51% lower than Fable 5.1; in a financial report research test requiring checking numbers and citations one by one, it passed 16 out of 18 reports, while Fable 5.1 and Opus 5 did not pass; an early tester completed a migration involving 680,000 lines of code in less than a day.
In terms of pricing, the cost for one million input and output tokens is $4 and $20 respectively, a 20% reduction from Opus 5, and cache read costs are reduced by 60%; the five-hour usage quota for Pro, Max, and other packages is also increased, and subscribed users get an additional opportunity to reset the quota.
In terms of security, Opus 5.5 attempts to bypass isolation boundaries about 85% less frequently than Opus 5 and reports such behaviors on its own. Its success rate in defending against prompt injection is among the lowest for tested models, matching Fable 5.1. However, most network security tasks are still handed over to Opus 4.8. The official admitted that pre-deployment assessments cannot identify all failure scenarios.
Less than two hours after the release, OpenAI launched GPT-6 Sol and Luna; Sonnet 5.5 and Haiku 5.5 are planned to be launched in the coming weeks. Trading efficiency and cost compression for the large-scale deployment of agents is becoming the main trend in competition among top models.
Claude5.5Opus5.5Fable5.1GPT-6Astra
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