token — The chunk of text a model reads and writes in — roughly three-quarters of a word — and the unit AI usage is billed in.
AI agent — An AI system that doesn't just answer once but works toward a goal in a loop — taking actions, reading the results, and deciding what to do next.
Why it matters
64 million log entries covering how GitHub's Copilot cloud AI agentAn AI system that doesn't just answer once but works toward a goal in a loop — taking actions, reading the results, and deciding what to do next.Full definition → actually works across 35,810 repositories: prompts, reasoning steps, tool calls and tokenThe chunk of text a model reads and writes in — roughly three-quarters of a word — and the unit AI usage is billed in.Full definition → usage. Real evidence on agent behavior and cost, not just the pull requests that came out the other end.
articleA Few Pages of Markdown: Committed AI Configuration and Lower Quality Cost after Coding-Agent AdoptionYegor Denisov-Blanch, Shyam Agarwal, Pavel Azaletskiy, Hao He, Rylan Schaeffer, Brando Miranda, Bogdan Vasilescu, Sanmi Koyejo
articleGraphectory Viewer: A Tool for Process-Centric Analysis of Agentic Software TrajectoriesCharlie Jyu, Shuyang Liu, Reyhaneh Jabbarvand
videoHow I automate my own job at Hugging Face using agents — Niels Rogge, Hugging FaceAI Engineer