ThePromptEra — Claude, IA e Prompt Engineering na Prática https://thepromptera.com/blog Guias, novidades e análises sobre Claude, IA e prompt engineering. Escrito por quem usa, testa e constrói com essas ferramentas todos os dias. en-us joaovictor.cidade@gmail.com (João Schuller) joaovictor.cidade@gmail.com (João Schuller) Mon, 03 Aug 2026 12:00:00 GMT https://thepromptera.com/blog/en/2026-08-03-claude-api-prompt-caching-cost-optimization Prompt Caching with Claude API: Cut Costs on Repeated Contexts https://thepromptera.com/blog/en/2026-08-03-claude-api-prompt-caching-cost-optimization Prompt caching with Claude API cuts input costs by up to 90%, but the 25% write surcharge punishes teams that iterate. Here's when the math actually works in your favor. Mon, 03 Aug 2026 12:00:00 GMT joaovictor.cidade@gmail.com (João Schuller) claude-apiprompt-cachingcost-optimization