Claude Haiku 4.5
Fast and cheap for high-volume work.
Optimized for speed and cost, which makes it the right pick inside pipelines where you're making thousands of small calls rather than a few hard ones. A good cost lever once a workflow is working and you want to run it repeatedly.
Best for
Classification, formatting, summarizing, and mechanical edits at scale.
Watch out for
Not the tier for architecture or subtle bugs.
Using this and stuck anyway?
Knowing the tool isn't the same as finishing the project. If yours has stopped moving, we'll take a look at it.
Tell us what's broken