Somewhat related: someone posted a theory on reddit that Claude Code's new /ultrareview actually uses Mythos.

Does that seem plausible to anyone else? It runs on their cloud. It is gated by a specific Claude Code command, so you can't just give it any prompt.

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tekacs 3 hours ago | parent | next [-]

Something in favor of this is the fact that it runs in their cloud and literally tells you that it costs I think $10 to $25 per run

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1ucky 3 hours ago | parent | prev | next [-]

Why would they use their most expensive model when sonnet or opus can do the job as well?

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0x696C6961 3 hours ago | parent | prev [-]

It would be pretty simple to see what API they're calling.

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consumer451 3 hours ago | parent [-]

That's what I meant to get at by "it runs on their cloud."

They can name that user-facing ultrareview API endpoint whatever they want, and we have no way to see what model endpoint it calls internally once running on their cloud, right?

	▲	zarzavat 2 hours ago \| parent [-]
		Introduce intentional and increasingly subtle vulns and test against Sonnet, Opus, etc? Should give statistical evidence of its power.