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A very cheap model posted very good agent scores today. Everyone is telling you to switch.
Before you do, there is one word on the announcement page that matters more than any number on it, and almost everyone scrolls past it: the word that says what stage the model is actually at.
Today's is public beta.
Today's lesson (full breakdown inside)
Three stages, in plain words. Research preview means play with it tonight. Public beta means try it beside the real thing. Generally available means build on it Monday.
Open weights is not one of those stages. It is a separate axis about what rights you get to the file, and mixing the two up is how people end up depending on something nobody promised them.
The lesson goes through the three questions to ask before you let a model into something you depend on, and the honest catch that matters more than any benchmark row: the label does not tell you the model is bad. It tells you what you are owed if it stops being good.
Also in today's brief
Anthropic published a strikingly candid incident report after reviewing 141,006 evaluation runs
A widely shared comparison chart today came from a company that sells a tool it works with, not a neutral lab
The interesting detail in the release: same architecture, same size, only re-trained afterwards
A quiet day for the tools themselves: no new stable Codex, no new Claude model
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