alt Hacker NewsWhat is the reason for this? Surely running tests by itself isn't necessarily token-expensive? And it provides cheap feedback for the agent: to see whether they're breaking things.
What is the reason for this? Surely running tests by itself isn't necessarily token-expensive? And it provides cheap feedback for the agent: to see whether they're breaking things.
My guess is that the LLM (usually Sonnet or Opus in my case) is burning tokens polling to see if the output finished - and there is often a lot of it. My current project is Rust, Python, and Kotlin for what it's worth.
I don't actually know the real mechanism, I came across this serendipitously.