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cs.AI2026
What Does a Harness Buy? Tokens, Mostly
Yangze Liu, Zhongyi Han
A coding agent is a language model wrapped in a harness: the system prompt, the tool set, and the context management that turn a chat model into something that can work inside a re…
cs.AI2026
Asking Earns Nothing: Scoring the Decision to Act in BFCL Multi-Turn
Yangze Liu, Zhongyi Han
An agent that lacks the information it needs should ask rather than act, and the task definitions of agent leaderboards say so. BFCL multi-turn builds two of its four categories ar…
cs.AI2026
A Dominant Supplier Slows Recursive Drift More Than It Steers It
Yangze Liu, Zhongyi Han
More and more of the text future language models learn from is written by a few of today's models. If one supplier writes most of a shared corpus, does it pull the models trained o…