AI Prompt Caching 2026
What Cache the static part of your prompts to save tokens + latency. Providers - Anthropic Claude: cache for 5 min $1.5/M cached read - OpenAI: automatic - DeepSeek: built-in When It Helps - Long system prompts repeated - Long RAG context - Multi-turn conversations - Few-shot examples Savings - 90% on Anthropic cached portion - Latency: 50% reduction often Pattern python messages = {"role": "syst…