OpenAI says GPT-6 Astra now builds a SQLite clone in COBOL, OCaml, and Fortran, not just Python
On OpenAI's new MultiLangBench, where a model builds a SQLite-compatible engine in 20 languages, GPT-6 Astra averages an 87.4% test pass rate (COBOL jumps from 10.9% to 72.1%) versus 26.8% for GPT-5.6 Sol. On its COBOL migration eval, GPT-6.1 Sol hits 86.6% at low reasoning effort and 97.9% at high, though both benchmarks are OpenAI's own and not independently verified yet.