Every SaaS business will become a harness around a model

Every SaaS business will become a harness around a model, whether or not they’ve realized it yet. What even is a harness? Narrowly, folks will often associate a “harness” with frameworks like LangGraph or coding agents like Codex, Claude Code, or OpenCode, which wrap a stateless model API in enough tooling and state that you can actually get work done. I’m using the term “harness” broadly to mean ...