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Articles tagged AI APIs

Every Lotook article tagged AI APIs: news, analysis, and practical guides, each with links to the original sources.

Diagram showing a shared prompt prefix stored in a KV cache while variable user queries append to the end
AI Guides · 7 min ·

What Is Prompt Caching? How KV Prefix Reuse Cuts AI API Costs and Latency

Learn what prompt caching is, how KV prefix reuse cuts AI API input costs and latency, and how Anthropic, OpenAI, and Gemini caching compare in 2026.