[vinhnx]

DeepSeek's KV cache is impressive and very cost-efficient for long-horizon tasks. I tested on VT Code with DeepSeek V4 Pro, and the cache-hit ratio is high. *I build a coding agent and have recently improved and hardened DeepSeek V4 integration. I registered the DeepSeek API key, topped up just 2 USD, and used just DeepSeek V4 Pro and Flash with max thinking. So far the most visible improvement in both cost and context is the cache improvement; it's quite impressive with this announcement of a permanent price drop. (https://xcancel.com/vinhnx/status/2058748305350557932). Currently, my usage is still at $1.15 after 2 full weekends.