New agent framework matches human-engineered AI systems — and adds zero inference cost to deploy

by | Feb 18, 2026 | Technology

Agents built on top of today’s models often break with simple changes — a new library, a workflow modification — and require a human engineer to fix it. That’s one of the most persistent challenges in deploying AI for the enterprise: creating agents that can adapt to dynamic environments without constant hand-holding. While today’s models are powerful, they are largely static.To address this, researchers at the University of California, Santa Barbara have developed Group-Evolving Agents (GEA), a new framework that enables groups of AI agents to evolve together, sharing experiences and reusing their innovations to autonomously improve over time.In experiments on complex coding and software engineering tasks, GEA substantially outperformed existing self-improving frameworks. Perhaps most notably for enterprise decision-makers, the system autonomously evolved agents that matched or exceeded the performance of frameworks painstakingly designed by human experts.The limitations of ‘lone wolf’ evolutionMost existing agentic AI systems rely on fixed architectures designed by engineers. These systems often struggle to move beyond the capability boundaries imposed by their initial designs. To solve this, researchers have long sought to create self-evolving agents that can autonomously modify their own code and structure to overcome their initial limits. This capability is essential for handling open-ended environments where the agent must continuously explore new solutions.However, current approaches to self-evolution have a major structural flaw. As the researchers note in their paper, most systems are inspired by biological evolution and are designed around “individual-centric” processes. These methods typically use a tree-structured approach: a single “parent” agent is selected to produce offspring, creating distinct evolutionary branches that remain strictly isolated from one another.This isolation creates a silo effect. An agent in one branch cannot access the data, tools, or workflows d …

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