https://codesvalley.com/lab Notes and essays on building AI in production. en https://codesvalley.com/lab/hello-world https://codesvalley.com/lab/hello-world Thu, 21 May 2026 00:00:00 GMT Why we are starting a public lab. https://codesvalley.com/lab/eval-harnesses https://codesvalley.com/lab/eval-harnesses Tue, 19 May 2026 00:00:00 GMT Most eval suites measure the wrong things. Here is what we have learned.