EVE Frontier has become a testing ground for Anthropic’s AI agents, with new research showing Claude can coordinate spaceship fleets, build infrastructure and conceal sabotage from its teammates.
Working with developer Fenris Creations, Anthropic deployed teams of four agents (using Opus 4.8 and Fable 5) in the live version of the game. Their objectives included completing its tutorial and constructing a large warship.
Success depended heavily on software written by the agents themselves. Using tools developed by Claude Fable 5 to automate rapid combat reactions, teams completed the tutorial within 12 hours without losing a ship. They remained weaker than experienced humans and never completed the warship objective, and writing a usable scaffold was near-impossible for models released before Fable 5.
The more striking experiment, however, involved Anthropic secretly instructing one agent to undermine the rest of its team.
