AI21 Labs Tops DeepResearch Bench II by Merging Weak Agents

Jul 11, 2026

AI21 Labs secured the top position on the DeepResearch Bench II (DRB II) with a TotalScore of 64.38, surpassing the previous best by 3.2 points. The benchmark assesses deep research agents using 9,430 expert-written rubrics across 132 tasks, and AI21 Labs achieved this by merging outputs from weaker agents to create a leading deep researcher.

Why it matters: This result suggests that combining multiple weaker AI agents can outperform a single strong model, potentially offering a more efficient approach to advanced research tasks.

Full story at: AI21 Labs ↗