#opentelemetry

Issue 4 · July 8, 2026 · 13 min read

You can't tune what you can't see: prompt‑cache observability for GitHub Copilot with OpenTelemetry

Open VS Code, ask Copilot Chat one question, and if you crack open the debug view you can watch prompt‑cache tokens tick past for that single call.

#github-copilot#opentelemetry#observability