b3 (Breaking Agent Backbones)

Benchmark / dataset

Measures how backbone LLMs resist attacks inside agent threat snapshots.

Category: Prompt injection & agent security
Insurance exposure: Prompt injection
Publisher: Lakera + UK AISI
Publisher type: Company (open source)
License: MIT
Status: In inspect_evals (active)
Last commit: 2026-10-15
Stars: 704(shared repo star count — UKGovernmentBEIS/inspect_evals backs 19 entries in this catalog)
Notes: No standalone repo found; lives in inspect_evals.

Wanich Risk Lab, 2026.