Working at the frontier: How Balyasny Asset Management evaluates and governs Claude Fable 5

Balyasny Asset Management (BAM) is a global, multi-strategy investment firm that manages roughly $38 billion in assets and supports a team of roughly 2,000 investment professionals and staff. Charlie Flanagan, Chief AI Officer, spoke with Anthropic about how the firm evaluates new models on thousands of real financial tasks, why it built its own platform for running agents, and what changed with the launch of Claude Fable 5. 2026 is the year we moved from AI systems that do search to AI systems that do work.

Published by Claude Blog. This page is a short excerpt; the full text is theirs.