https://modelsatwork.news/article/aws-bedrock-prompt-caching-agents-gpt-6-astra-62-percent-lower-input-cost-stable-tools-prefix-vendor-published Models at Worken 2026-10-31T22:40:00.000Z AWS: prompt caching cut agent input cost 62% on Bedrock, in one test AWS, Amazon Bedrock, Agent cost, Token cost, Vendor-published