That's funny. Sonnet is not great in my opinion. I mean, it often amazes me with its creativity, and I do prefer its style over most bigger models from other providers.

But it also constantly just does dumb things that make me slap my forehead. Opus is a lot better but the slap ratio has not reached 0 yet. Fable seems a bit better there, more testing needed.

But yeah, VC money ran out, now we wait for Moore's Law... :)

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Re: Sonnet-ish-pricing. GLM-5.2 is cheaper than that, and appears to be "Opus-ish" in quality. I've been having a reasonably fine time with it. My experience is that it's "very solid for small and medium tasks", haven't tested it for anything bigger though.

I use GLM 5.2 through Opencode Go, but find it to be quite slow when you get to higher contexts (80k+) through their provider so I have not been able to test too much.