Reason, a new coding-agent harness, claims frontier coding results at up to 20x lower cost

A post on X by xadisingh introduces Reason, which it calls "the world's most cost-efficient harness", aimed at runaway agent bills. The post claims Reason outperforms top harnesses on Terminal-Bench and DeepSWE while cutting cost per task to a fraction of theirs, and says frontier coding performance comes at up to 20x lower cost.

These figures are the announcement's own claims; the post gives no comparison details, and no independent evaluation is in hand. The post had drawn about 1,200 likes and 850 replies by the afternoon of November 13.