Users Report GPT-5.6 Pro Outperforms Codex in Coding

Users report that GPT-5.6 Pro, currently available only in the chatbot, is the smartest version. It is said to outperform the Codex Ultra version in solving complex problems, particularly excelling at reviewing, criticizing, and correcting code.

2026-07-24 ~ 2026-07-24 · 3 related posts

• GPT-5.6 Pro beats Codex on critique and repair, says Will Depue — willdepue · 2026-07-24
• Users say GPT-5.6 Pro is better at reviewing Codex code than Codex itself — jarrodwatts · 2026-07-24
• GPT-5.6 Pro is said to outperform Codex’s Ultra on hard tasks — eldonredwards · 2026-07-24