For subagent work, Hy3 has been treating me well. Cheaper than V4-Flash-0731, roughly the same capability as the old DS-V4-Pro. For search, explore, execute, QA it's plenty. Planning and review I still hand to the main model. Input: Hy3 $0.126 / V4-Flash-0731 $0.22 off-peak, $0.44 peak Output: $0.522 / $0.66 off-peak, $1.32 peak Cache: $0.0315 / $0.007 off-peak, $0.014 peak One thing to watch: cache reads cost more on Hy3. If your agents live on cache hits, the saving disappears fast.
For subagent work, Hy3 has been treating me well.