An outage and a surface split. Still no broad decline.
Claude had a resolved multi-model incident today. OpenAI says its recent Sol update was Chat-only. Both facts sharpen the test without proving that popular model weights got worse.
What changed today
Anthropic reported elevated errors for Fable, Mythos, and Opus across Claude surfaces, then resolved the incident at 02:35 UTC. Retry or wait is the proportionate move.
OpenAI says the 6 August Sol update changed Chat, while the version powering Work and Codex was not changing in that release. The surface belongs in the test identity.
Reports describe fast or shallow Chat responses, file/tool failures, and Chat-versus-Work differences. They are detailed intake, not a population estimate.
Judge version and severity can move scores. The latest visible public drift board is also dated 13 September, so alert age matters.
Reader move
Before switching, record the fixed task, surface, requested and served model, route, plan, context, configuration, judge or harness, availability state, task budget, warning or stop state, completed artifact, correction burden, allowance movement, and control result. Then choose retry, wait, pin, stop, switch, or replay.