GitHub Copilot is no longer one tool. It's a chat panel, a scriptable CLI, a background agent, and an editor-native agent mode, four different working styles built on the same model. Step outside GitHub's ecosystem and open source agents like opencode make the choice even harder.

In this session, we will see them all. What are their benefits? Which harness fits which job? Are you missing out if you don't use them all? You will leave with a decision framework to find out what harness might be best for the job, but most importantly: what works best for you.