AI coding agent guide · Learnetto · Intermediate
Your coding agent completes useful work but spends too many tokens, repeats retrieval, or carries noisy tool output through later turns.
coding agents, cost, context engineering, tool output, prompt caching
Coding agent evaluation guide · GitHub · Intermediate to advanced
You want GitHub's September 2, 2026 evidence for measuring coding-agent efficiency across the whole task, including selective output compression, preserving useful context, benchmark regressions, and controlled production experiments.
github copilot, coding agents, context engineering, evals, cost optimization