Eleven models in eleven days: none of those releases forces you to requalify 18 Sep 2026 10 min read Requalification Eleven models in eleven days. The only date that forces work on you was published a month earlier, in a changelog nobody opens.
Your provider's minimum notice period has become its actual schedule 08 Sep 2026 8 min read Model Lifecycle 184 days at OpenAI, 61 at Anthropic, 92 for a Codex variant. Retirement notice is a contract clause, and your teams are the ones absorbing it.