COBOL migration accuracy jumps from 5% to 87% in one model generation
OpenAI’s GPT-6.1 Sol migrated COBOL programs to modern languages correctly 86.6% of the time at low reasoning effort. Its predecessor, GPT-5.6 Sol, managed 5.4% at the same setting. The source is OpenAI’s own write-up of two new evaluations for low-resource programming languages, …