Anthropic releases Opus 5.5 with lower prices and Fable-level performance
Anthropic has released Opus 5.5, its updated frontier model in the Claude tier. The new model features lower pricing, costing twenty dollars per million output tokens, and operates at faster speeds than its predecessor. Security evaluations were performed by outside groups, and the release complies with Anthropic's established safety protocols.
Anthropic launched its newest frontier model, Opus 5.5, on Tuesday to update its highest tier. The company states that the release achieves state-of-the-art results in coding and knowledge work. It outperforms the larger Fable model in various benchmarks and handles informal tasks that the previous system could not complete. The new tool costs twenty dollars per million output tokens, a reduction from the previous twenty-five dollar rate. This price drop accompanies faster execution speeds due to lower compute requirements. The announcement arrives two months after the prior release on July 24. CEO Dario Amodei stated that he is pacing capability advancement to allow risk prevention measures to keep up. Safety evaluations were conducted by outside groups like METR and Frontier Design. The exact timeline for the release of Sonnet 5.5 and Haiku 5.5 is unspecified beyond a general mention of upcoming weeks. Specific details about the improved security and monitoring systems for future models remain undisclosed, with the company only promising more information soon. The full scope of public policy infrastructure is yet to be detailed, as the blog post indicates that capacity building is still in progress.