# Code Nodes Slash AI Costs 19x by Replacing Unnecessary LLM Calls

- slug: code-nodes-slash-ai-costs-19x-by-replacing-unnecessary-llm-calls
- date: 2026-03-23
- category: Artificial Intelligence

A research team spanning East China Normal University, Beihang, Fudan, and Shanghai UIBE has built something that pushes against one of the more persistent inefficiencies in agentic AI systems: the assumption that every step of a workflow needs a language model.

Their system, HyEvo, automaticall...

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