How did it not immediately flag that up? Are you sure it wasn’t being silently routed to Opus?

No, given it charged me the full amount in /usage and solved my problem impressively well compared to Opus/Codex both on xhigh.

	▲	bel8 3 minutes ago \| parent [-]
		As Anthropic state it themselves, depending on th request, they do it silently. There's no way to know if they charged you for the full amount but routed to Opus, as per design.