LLM gateway engineering notes — BYOK, prompt caching, billing under partial failures, and protocol translation.https://synthorai.io/enhello@synthorai.io (Synthorai)hello@synthorai.io (Synthorai)https://synthorai.io/blog/llm-prompt-caching-complete-guide/https://synthorai.io/blog/llm-prompt-caching-complete-guide/A four-part series on LLM prompt caching: KV cache architecture, provider comparison, working Python tutorial, and best-model-by-use-case decision matrix.Tue, 26 May 2026 00:00:00 GMTprompt-cacheseries-overviewllm-architecturehttps://synthorai.io/blog/best-llm-by-use-case-chat-api-agent/https://synthorai.io/blog/best-llm-by-use-case-chat-api-agent/Decision matrix matching LLM workload — chatbots, RAG APIs, AI agents — to the right model and caching strategy. Real 2026 pricing, cost math per scenario.Mon, 25 May 2026 00:00:00 GMTllm-selectionagentsragchatbothttps://synthorai.io/blog/prompt-caching-tutorial-code-examples/https://synthorai.io/blog/prompt-caching-tutorial-code-examples/Measured prompt-cache savings across Claude, GPT-5, Gemini 2.5, DeepSeek-v4 and Qwen3 via Synthorai's OpenAI-compatible gateway. Real usage.cost and TTFT.Sun, 24 May 2026 00:00:00 GMTprompt-cachetutorialpythonhttps://synthorai.io/blog/provider-caching-comparison/https://synthorai.io/blog/provider-caching-comparison/Anthropic Claude, OpenAI GPT-5, Gemini 2.5, DeepSeek-v4 and Qwen3 expose prompt caching in five different shapes — measured 2026 feature comparison.Sat, 23 May 2026 00:00:00 GMTprompt-cachellm-providersevaluationhttps://synthorai.io/blog/llm-prompt-caching-explained/https://synthorai.io/blog/llm-prompt-caching-explained/How LLM prompt caching actually works: Transformer attention math behind K/V reuse, the memory-compute tradeoff that shapes TTL, and why it cuts cost and TTFT.Fri, 22 May 2026 00:00:00 GMTprompt-cachetransformerllm-architecture