Your Agent Is Wasting Tokens and You Don't Know It - Erik Hanchett, AWS

Jun 28, 2026 · 5:55

Erik Hanchett, a Senior Developer Advocate at AWS, presents five specific techniques to reduce token costs in agent workflows without changing prompts or models. He demonstrates caching system prompts with 'cachePrompt' to avoid resending full context, and routing tasks by difficulty using cheaper models like Claude Haiku for simple requests. He advises offloading large tool results by storing them externally and sending only summaries, capping tool loops with a max iterations setting to prevent infinite loops, and trimming conversation history using a sliding window that keeps only the last 10 messages while optionally summarizing older context. These methods directly address common cost pitfalls, such as using expensive models for trivial tasks and letting context windows grow unchecked.

Strands Agents

2 episodes