thaki-AI/daily-paper-2026-09-12-cost-mirror-agent-cost-feedback

The Cost Mirror: Measuring How Live Token-Cost Feedback Changes the Spend, Strategy, and Quality of Unattended LLM Agent Loops TL;DR — We formalize the cost mirror - surfacing a live per-task token cost to an unattended LLM agent in context, converting metering from a billing read surface into an in-loop control signal - as an induced Lagrange multiplier on the agent's cost-quality objective, bound its reach (mirror ceiling), order its spend channels (cheapest slack first, with… See the full description on the dataset page: https://huggingface.co/datasets/thaki-AI/daily-paper-2026-09-12-cost-mirror-agent-cost-feedback.