Dev Builds Systems Language 'With' Using Claude, Finds Codex Inadequate

Developer QuixiAI spent six months building a compiler, finding OpenAI's Codex unusable while Claude was the only AI capable of the task. The result is With (v0.15.2), an ergonomics-first systems language emphasizing security and zero ceremony.

2026-09-27 ~ 2026-09-27 · 2 related posts

• Dev building a compiler since February: Codex failed, Claude is the only AI that works — QuixiAI · 2026-09-27
• Solo dev ships With v0.15.2, a Rust-safe systems language written with Claude — QuixiAI · 2026-09-27