Claude Sonnet 4.5 (JP)

Claude Sonnet 4.5 (JP) sits in the middle of Anthropic's Claude Sonnet family and is offered through Amazon Bedrock, giving Japanese-region customers a managed route to the model. It accepts text, images, and PDF documents as input and produces text, with built-in support for tool calling, structured output, and configurable temperature. Third-party commentary around its Bedrock launch frames it as a general-purpose assistant positioned for productivity and coding tasks, while independent fit scoring highlights particularly strong agent-style usage thanks to the combination of tool calling, structured output, and reasoning features.

The model is designed for practical, production-oriented workloads rather than open experimentation, since it is distributed as a hosted service without open weights. Independent profile scoring rates its coding ability and vision handling favorably, reflecting benchmarks and capability coverage tied to image input and reasoning. Pricing sits at $the listed price per million input tokens and $the listed price per million output tokens, with prompt-caching available at reduced rates, making it a middle-tier option for teams that need a balance of capability and cost on Bedrock rather than the cheapest or the largest model in the lineup.