Source announcement: . Prepared with AI assistance from the linked primary sources. Company and government claims are attributed to their issuers. How we use AI.
Sony Bank and Fujitsu said on 14 September 2026 that applying generative AI to core banking software had shortened the period from basic design through integration testing by 30% compared with their conventional methods.
The result was measured as of July 2026, following adoption that began in September 2025. It is a company-reported outcome for those development phases.
The process uses design documents, source code and testing materials with AI agents centred on Anthropic’s Claude through Amazon Bedrock. People retain final judgment, approvals and quality assurance. The companies said they plan to extend the approach to additional development stages and systems.
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