Source

arXiv:2602.16873 — AdaptOrch: Task-Adaptive Multi-Agent Orchestration in the Era of LLM Performance Convergence (Feb 2026)

Summary

Demonstrates orchestration topology (parallel, sequential, hierarchical, hybrid) dominates performance as LLMs converge. Proposes a topology-routing algorithm mapping task dependency DAGs to optimal coordination patterns in O(|V|+|E|) time, achieving 12–23% improvement over static baselines.

Applicability to Zeph

Directly applicable to zeph-core orchestration (TaskGraph/DagScheduler/LlmPlanner):

• Zeph already has a DAG-based task graph; AdaptOrch's algorithm selects dispatch topology from the dependency structure
• Maps to existing topology_selection = true config flag in [orchestration]
• Adaptive synthesis consistency scoring maps to multi-model provider routing (fast vs. quality per task type)

Implementation Sketch

• Add topology classifier in LlmPlanner or DagScheduler that inspects task dependency structure
• Select from: pure-parallel (no deps), sequential (linear chain), hierarchical (hub-and-spoke), hybrid (mixed)
• Weight selection by task type + provider capability

Complexity

Medium — topology selection logic is a new routing step; dependency-DAG analysis is partially present already.