Anthropic has launched its latest AI models, Claude Opus 4 and Sonnet 4, which are now available in Amazon Bedrock. These models enhance coding capabilities, advanced reasoning, and the development of autonomous AI agents, enabling developers to tackle complex long-running tasks with improved performance in coding, bug fixes, and production workflows.

Qwen models from Alibaba have been added to Amazon Bedrock, expanding the platform's offerings with four distinct models optimized for various coding and reasoning tasks. These models feature advanced architectures, including mixture-of-experts and dense designs, allowing for flexible integration and efficient performance across multiple applications. Users can start testing the models immediately through the Amazon Bedrock console without needing infrastructure management.

Claude Sonnet 4.5, now available in Amazon Bedrock, enhances coding and complex agent capabilities with improvements in tool handling, memory management, and context processing. This model is particularly effective for long-horizon coding tasks and offers practical applications in cybersecurity, finance, and research, enabling developers to create sophisticated AI agents with consistent performance and innovative solutions.