Reason launches free SOTA agent harness, beats Codex+Astra on Terminal-Bench 4.0 at 22% lower cost
YashasGunderia · x · 2026-10-14
Reason Machines introduced Reason, a free state-of-the-art agent harness focused on cost efficiency, claiming it beats Codex+Astra on Terminal-Bench 4.0 while being 22% cheaper. The poster argues harness engineering will be central to model launches: benchmarks run in closed environments with specific harnesses, and better harnesses can outperform those official numbers.