According to AWS Machine Learning, Claude Opus 5.5 was announced today on Amazon Bedrock and the Claude Platform on AWS, marking the first model in the Claude 5.5 family. Claude Opus 5.5 is Anthropic's most powerful Opus model, suitable for agent-based coding, intelligent work, and long-running tasks. Claude Opus 5.5 differs from the previous version in that it performs more operations with fewer tokens, resulting in lower costs for customers. The new model offers lower prices per token and significantly cheaper cache operations, resulting in lower average task execution costs compared to Claude Opus 5. This allows teams to implement more ambitious agent projects at scale. Claude Opus 5.5 is trained to communicate more clearly. As she works, she provides information about her actions, findings, and needs, making it easier to complete lengthy tasks. Adaptive thinking is always active, and Opus 5.5 automatically determines how much reasoning is required for each task, allowing you to use effort as a control instead of manually managing your thought budget. This is the first Opus model to include
Features security classifiers similar to those used in Claude Fable 5.1 in areas such as biology, cybersecurity, and AI development. Requests will be rejected more frequently than in previous versions of Opus. Claude Opus 5.5's capabilities are well suited for industries where consistency and depth are important. In software design, Opus 5.5 demonstrates improvements over Opus 5 for long sessions with clear communication and explainability, making the model easier to use, review and trust. Intelligent work requires fewer revisions compared to Opus 5 when working with long documents and reports. To get started with Claude Opus 5.5 on Amazon Bedrock, open your Amazon Bedrock console, select Test, then Site, and select Claude Opus 5.5 as your model. From there you can run a query directly against the model. It is also possible to call the model programmatically using the Anthropic Messages API via bedrock-runtime and bedrock-mantle (via the Anthropic SDK). The Invoke and Converse APIs are also available on bedrock-runtime via the AWS Command Line Interface (AWS CLI) and AWS SDK. To work with the model, you must have an active AWS account with
access to Amazon Bedrock, AWS CLI installed and configured, Python 3.10+, Boto3 installed, Anthropic SDK installed, and IAM rights for bedrock:InvokeModel and bedrock:InvokeModelWithResponseStream. Claude Opus 5.5 is available today on Amazon Bedrock through various geographic profiles, including the US, Europe, Australia and Japan, as well as in the US East region. For a complete list of supported regions, see the Amazon Bedrock documentation. For pricing information, visit the Amazon Bedrock pricing page. The material was prepared by a neural network based on the original publication. AI may make mistakes in details (numbers, names, dates, quotes) - for important information, check with the original source. Optimizing Load Balancing with NVIDIA Topograph AWS Machine Learning Introduces Agent Skills Assessment with Strands Evals Kyutai has released a Voice of Reason model for verbally solving math problems. Nokia opens access to AnyJev, a library for decision-making without training. OpenAI introduced GPT-6 Sol and Luna with new API pricing, reducing the cost by 50%.
