Claude Opus 5.5, the newest addition to the Claude 5.5 family, has been released with substantial enhancements in performance, safety, and efficiency. This model is the first to be released since the call for pacing the frontier, emphasizing the importance of safety practices in AI development.
Opus 5.5 demonstrates a major step up from its predecessor, Opus 5, with significant improvements in coding, computer use, and knowledge work. It has achieved the highest scores on the automated behavioral audit, showcasing its strength in alignment and safety. The model is also more resistant to prompt injection attacks and has stronger defenses against misuse.
In terms of performance, Opus 5.5 leads in agentic coding, computer use, and knowledge work, outperforming other models in its class. Its efficiency is notable, with a 40% drop in costs compared to Opus 5. The pricing reflects this efficiency, with cache reads, input tokens, and output tokens costing less than Opus 5.
The model's capabilities are not limited to coding and computer use; it also excels in knowledge work, including financial analysis and business workflows. Opus 5.5 has been tested on various benchmarks, including Terminal-Bench 4.0 and GDPval-AA v2.1, and has achieved impressive results.
Claude Opus 5.5 is available on all platforms, including Amazon Web Services, Google Cloud, and Microsoft Azure. Its release marks a significant milestone in AI development, emphasizing the importance of safety, efficiency, and performance.
This article was written with the assistance of AI.
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