A "Claude Honeycomb EAP" entry flickered through Cursor's model picker last week, and the speculation settled on Opus 5. The screenshot carries a detail worth more than anything built on it: Honeycomb's safety fallback pointed at Opus 4.8. That's the shape Fable 5 uses when a classifier blocks a request. A model that falls back to Opus is not an Opus. If Honeycomb is anything, it's Mythos-class.

Which is what the Opus 5 framing misses. Anthropic's 9 June announcement put Fable 5 and Mythos 5 in a Mythos class it described as sitting above the Opus class in capability, and the docs still order the range that way: Fable 5, Opus 4.8, Sonnet 5. An Opus 5 wouldn't be the next flagship. It'd be a refresh of the second tier, which is what I took 4.8 to be in May.

Timing is softer evidence, and Anthropic could be firefighting Fable 5 while shipping an Opus point release off another pipeline. But having taken Fable 5 offline in June, redeployed it on 1 July behind new cybersecurity classifiers, and extended its access window three times in five weeks, it doesn't look like a company holding a launch slot this week. The end-of-July date came from a tweet, laundered through SEO blogs into a fact. Whatever lands on top next, I don't think it'll be called Opus.

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