PaperAgent

Jun 23, 2026 · Artificial Intelligence

Arbor Boosts Autonomous Research Performance 150% Over Claude Code

Arbor, a collaborative framework from RUC and Microsoft, uses Hypothesis‑Tree Refinement to turn short‑lived experiments into lasting research progress, achieving over 2.5× held‑out gains across six autonomous optimization tasks and setting a new SOTA on MLE‑Bench Lite.