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Mistral’s legacy-code project shows why AI agents still need testing and human review

In a case study published on 9 September, Mistral says it helped a European energy operator migrate 40,000 lines of Fortran 77 to C++. This was the first part of a 300,000-line system. The team checked numerical outputs against the original software, improved documentation and used structured agent workflows with human review. Fully autonomous attempts were less successful.

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Read the original article at Mistral News
Source: Mistral News · Published 26 September 2026