Browser Use cuts agent cost 33% by fixing prompt cache hit rate
Cache hit rate is often invisible in agent eval reports, yet here it accounted for a third of the cost per task with zero score change, a lever most teams never instrument. Engineers building or benchmarking browser agents can audit their own harnesses for cache-breaking behaviour and adopt browser-use 1.0.4 directly. The standardised comparison against six browser tools inside Codex gives buyers a concrete reference point when choosing a harness.
