Unreal Agent claims 40% lower Codex cost

Unreal Labs released Unreal Agent, an asynchronous harness that claims up to 40% lower cost than Codex. In its GPT-6 Astra xhigh Terminal-Bench 4.0 run, both agents posted a 57.9% pass rate, but Unreal Agent’s reported total was $1,428 versus Codex’s $2,350; background tool calls keep the model from waiting on polls and heartbeats. The Strands harness cost-per-pass analysis is the useful comparison: benchmark your tool mix before treating a vendor table as a migration verdict.