🛠 64% Savings on DeepSeek API via Permafrost
The Permafrost plugin for Claude Code has been released, which "freezes" the system prompt prefix. This prevents it from changing when tools are added or context is updated, allowing DeepSeek to consistently hit the automatic prefix cache.
🌍 It solves the "cache busting" problem in agentic systems, where dynamic data makes LLM caching mechanisms ineffective.
👤 It allows for significant API cost savings, turning expensive requests into cheap ones through stable cache utilization.