24 October 2026

Reasoning models are the engine behind AI agents, one author argues

First reported

Ahead of AI ran this on .

  • An agent harness adds context management and tool access on top of a reasoning model.
  • The author compares a reasoning model to an engine that the harness drives.

How it was covered

Ahead of AISebastian Raschka

Analogy of model as engine, agent harness roles, context management, tool access, and reasoning models in agents