OpenAI Says Codex Tuned Three Open Models in Two Months, Sparking Skepticism

OpenAI's blog revealed that Codex with GPT-Astra tuned three open-weight models to high performance in two months, but some questioned why the timeline seems long given current tooling.

2026-08-25 ~ 2026-08-25 · 2 related posts

• OpenAI blog: Codex brought three open-weight models to high performance in two months — eliebakouch · 2026-08-25
• Questioning OpenAI's Two-Month Model Improvement Timeline — eliebakouch · 2026-08-25