Exa Enterprise AI Inc. (Minato-ku, Tokyo, President and CEO: Takuma Oue, hereinafter Exa Enterprise AI), a group company of ExaWizards Inc. (Minato-ku, Tokyo, President and CEO: Makoto Haruta, hereinafter ExaWizards), today announced the commencement of offering "Claude Sonnet 5," the latest model released by Anthropic on June 30 (US time), through its corporate generative AI service "exaBase AI (hereinafter exaBase AI)," which has achieved No. 1 market share*1. This model excels in planning, utilizing tools such as browsers and terminals, and autonomous task execution, allowing for more accessible and secure use with performance approaching that of the high-end model "Claude Opus 4.8." Furthermore, we will resume offering "Claude Fable 5*3," which was temporarily suspended due to a request from the U.S. government the other day. ☑ Features of Claude Sonnet 5 This model is characterized by its superior ability to think and proceed with tasks by planning and effectively using tools like browsers and terminals. Compared to the previous model "Claude Sonnet 4.6," agent-related performance in areas such as reasoning, coding, and knowledge work has significantly improved. While improvements in safety, such as a reduction in the occurrence rate of unintended erroneous behavior, have been made, its capability in cybersecurity tasks is suppressed compared to the high-end model "Claude Opus 4.8." Safety features (safeguards) that detect and block dangerous usage in real-time are also enabled by default. ☑ Usage Conditions Users currently using exaBase AI can utilize Claude Sonnet 5 without any additional application. There are no special usage conditions. You can immediately experience the new model's features, just like with the conventional operation method. For more details, please contact us here. ☑ About exaBase AI (formerly: exaBase Generative AI) Since the launch of its paid service in June 2023, exaBase AI has been used by approximately 1,400 companies. It addresses