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ResearchOctober 20, 2026

OpenAI says GPT-6 is much better with legacy programming languages such as COBOL and Fortran

OpenAI improved its latest models for low-resource programming languages like COBOL, Fortran, and Visual Basic. On the new MultiLangBench, GPT-6 Astra hits an 87.4 percent test pass rate across 20 languages, up from about 38 percent for GPT-5.6 Terra. For COBOL migration…

Matthias Bastian·The Decoder
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Key Takeaways
  • 01.OpenAI improved its latest models for low-resource programming languages like COBOL, Fortran, and Visual Basic
  • 02.On the new MultiLangBench, GPT-6 Astra hits an 87.4 percent test pass rate across 20 languages, up from about 38 percent for GPT-5.6 Terra
  • 03.For COBOL migration…

This material is provided as an extended analytical summary.

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Aggregated within AI Qazaqstan national intelligence stream with author attribution.

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