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

**Published:** October 20, 2026
**Author:** Matthias Bastian
**Source:** The Decoder
**Language:** en-US
**HTML:** https://aiqazaqstan.com/en/articles/openai-says-gpt-6-is-much-better-with-legacy-programming-languages-such

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…

> From the original source: **The Decoder**
> [Read full article at The Decoder](https://the-decoder.com/openai-says-gpt-6-is-much-better-with-legacy-programming-languages-such-as-cobol-and-fortran/)

**Tags:** #OpenAI

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