alt Hacker NewsSlightly off-topic, but I recently tested some tool and it turns out Opus is far cheaper than Sonnet, because it produces way less output tokens and those are what's expensive. It's also much slower than Opus (I did 9 runs to compare Haiku, Sonnet and Opus on the same problem). I also thought "oh, Sonnet is more light-weight and cheaper than Opus", no, that's actually just marketing.
Claude subscriptions (strangely) have a Sonnet limit which is lower than the general model limit. Using Sonnet counts against both limits, using Opus only the general limit. So the subscriptions are discouraging Sonnet use as well.