AI Agents Made Crystal Clear · chapter 3: When NOT to Build an Agent
The four dials
2026-10-18
Latency and cost are the trade Anthropic names outright. Determinism and debuggability are the two the invoice never shows, and they are the ones practitioners complain about most.
Below: the paragraph from the book that builds this idea, then the diagram itself (Figure 3.2), and a recap. About a minute of reading.
Anthropic's sentence on the trade is the most useful thing in their whole article: "Agentic systems often trade latency and cost for better task performance," and developers should "consider when this tradeoff makes sense." That is one sentence with two prices in it, and experience adds two more. Figure 3.2 draws all four as dials that move the wrong way as the model takes more of the decisions.
Recap
- The idea: Latency and cost are the trade Anthropic names outright.
- The picture: Figure 3.2, from chapter 3 ("When NOT to Build an Agent") of AI Agents Made Crystal Clear.
- Go deeper: the chapter builds this step by step, with recipes and sources at the end.
This diagram is one of many in AI Agents Made Crystal Clear.
Every chapter opens with the gist, draws the hard ideas, and ends with recipes and sources.
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