Story
SoftBank Corp Partners With AI Startup Sierra to Deploy Agentic Customer Support

Summary
The Japanese telecommunications giant announced a partnership to deploy Sierra's AI-powered customer support agents, expanding on an existing relationship with the well-funded startup.
SoftBank Corp. (TYO:9434) is partnering with artificial intelligence startup Sierra to deploy its AI agent-powered customer support operations in Japan, the companies announced Tuesday. The move signals a deeper integration of AI into the telecommunications firm's customer-facing services.
Partnership Expansion
SoftBank Corp., an independently listed unit of the SoftBank Group conglomerate, already utilizes Sierra's AI technology for its mobile brand, LINEMO. Under the new partnership, the company will now consider a broader rollout across its flagship services.
Key areas for potential expansion include:
- The Softbank mobile brand
- The Y!mobile brand
- Other services under the SoftBank Corp. group
AdAbout Sierra
Sierra, founded in 2024 by former executives from Salesforce and Google, specializes in developing AI-powered agents focused on customer support software. The startup has attracted significant investor interest, raising $950 million in a funding round in early May.
Market Implications
The partnership highlights a growing trend among major corporations, particularly in the telecom sector, to adopt advanced AI for enhancing operational efficiency and customer service. For investors, this move underscores the increasing commercial adoption of specialized AI solutions and the strategic importance of automation in managing large-scale customer support infrastructure.