Writer study: Tooling efficiency beats model choice for cutting AI costs

Writer's research (arXiv:2607.06906) found that improving agentic harness efficiency — how well the code wrapping an AI model coordinates its tools and steps — cut costs an average of 40%, outperforming model selection. CEO May Habib said enterprises are "absolutely sick of chasing the next benchmark." The harness upgrades shipped August 13, 2026.