Comment by surgical_fire

Would it partly be explained by Haiku 5.5?

At work I am stuck with Claude, but I was always mindful of the cost of that thing.

With aggressive clean session management and some judicious compacting, I get Opus to plan, Haiku to code, Sonnet to review.

I managed to reduce costs from ~$200 to ~$50 in a month, even when I started to use Claude for more tasks than I did before.