OpenAI says GPT-6.1 Sol is far better at migrating legacy code
OpenAI's own MultiLangBench shows GPT-6.1 Sol at 86.6% COBOL migration accuracy versus 5.4% for GPT-5.6 Sol.
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Product
MultiLangBench
- Mentions · 7d3
- Mentions · 30d3
- All mentions3
- First seenOct 19, 2026
- Last mentioned5d ago
Timeline
3 articles · newest firstOpenAI says GPT-6 is much better at COBOL and Fortran
GPT-6 Astra averages 87.4 percent on MultiLangBench, versus about 38 percent for GPT-5.6 Terra.
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OpenAI reports coding gains on COBOL, Fortran and Visual Basic
On OpenAI’s tests, GPT-6 Astra averaged 87.4% on MultiLangBench, up from 26.8% for GPT-5.6 Sol.
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Appears with
- GPT-6.1 Solai model · 3
- GPT-5.6 Solai model · 3
- GPT-6 Astraai model · 3
- GPT-6 Lunaai model · 2
- OpenAIvendor · 2
- IBMorganization · 1
- OpenAIorganization · 1
- GPT-5.6 Terraai model · 1
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