Claude Sonnet 4

An engineer building a document-processing AI agent discovered that processing a 2MB PDF inline consumed 97,354 input tokens, costing $0.29 per document at Claude Sonnet 4-6 pricing. By offloading fil…

Based on the article, building an AI agent with 10 tools requires sending 800–1,200 tokens of tool definitions on every API call, which can become costly at scale (e.g., 10,000 calls/day). The authors…

ARES (Adaptive Reasoning Effort Selection) is a framework that reduces the cost of multi-step LLM agent tasks by using a lightweight router to predict the minimum reasoning effort needed for each step…