Originally published on the Cloud ex Machina blog .

Most teams I talk to are shipping more code than ever, and a growing share of it is written by AI coding agents like Claude. A human reviews it, it gets merged, and it goes to production. It works, and it passes the tests.

Then nobody looks at what it costs to run: in the cloud, and in all the dev tooling around it.

Engineers care about this. Nothing in the workflow tells them, though. The agent that wrote the change never finds out it doubled the reads on a database, or that a config it touched now gets polled a million times an hour. So the next change gets written the same way, just as blind.

That gap is what this post is about, the cloud cost of AI-generated code: it ships, and nothing about how it behaves in production makes it back to whoever writes the next change, human or agent.

And the cloud bill is only part of it.…