Augment rebuilds its Auggie CLI harness on Pi, cutting SWE-bench Pro task cost 53%
Original titleHow we rebuilt the Auggie CLI harness to make tasks 53% cheaper than Claude Code
Augment rebuilt the Auggie CLI harness as v2, forking the open-source Pi coding harness and moving its context engine into Pi's extension system.
On SWE-bench Pro at the same pass rate, Auggie v2 completes a task for $1.27 versus $2.70 for Claude Code, which is 53% cheaper.
The gains come mainly from a narrower tool surface, one bash tool plus read, edit, and write, and from codebase retrieval that reduces exploration turns.
The post traces the design trade-offs behind each harness choice and ties them to measured token and cost differences, useful for anyone weighing agent tool surfaces.
Source: Augment Code Blog · augmentcode.comPublished · added here