exaBase AI Begins Offering Latest Model "Claude Sonnet 5"

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 the challenges of security and compliance that corporations face when using generative AI, supporting administrators in monitoring usage and registering forbidden words. It also enables the utilization of generative AI based on a company's unique data; a feature is implemented that allows users and administrators to upload their own files and use conversational and generative functions based on their content.

For details about exaBase AI, please see the link below. https://exawizards.com/exabase/gpt

Image 1: Features of exaBase AI

*1 "2026 Generative AI / AI Agent Market Survey" by Fuji Chimera Research Institute <FY2024 Actual Results, Third-Party Conversational Generative AI Application Vendor Share> *2 The name was changed from "exaBase Generative AI" to "exaBase AI" in July 2026.

https://exawizards.com/archives/32249/ *3 For information on the offering of "Claude Fable 5," please refer to the press release dated June 10, 2026.

https://exawizards.com/archives/32094/

*4 Company names and product/service names mentioned are registered trademarks or trademarks of their respective companies. *5 Image 1 was generated using exaBase AI.

【Exa Enterprise AI Company Overview】 Company Name: Exa Enterprise AI Inc. Location: Sumitomo Fudosan Mita First Building 5F, 4-2-8 Shibaura, Minato-ku, Tokyo Established: October 2023 Representative: Takuma Oue, Representative Director Business Activities: Corporate business reform and productivity improvement through planning, development, and sales of products and services utilizing technologies such as generative AI. URL: https://exawizards.com/eai/

【ExaWizards Company Overview】 Company Name: ExaWizards Inc. (Stock Code 4259) Location: Sumitomo Fudosan Mita First Building 5F, 4-2-8 Shibaura, Minato-ku, Tokyo Established: February 2016 Representative: Makoto Haruta, President and CEO Business Activities: Industrial innovation and resolution of social issues through the development of services utilizing AI. URL: https://exawizards.com/