WE UPGRADED TO A FRONTIER MODEL AND OUR COSTS WENT DOWN

Summary from the TLDR Dev newsletter

Mendral reduced costs by using a multi-agent architecture where a cheap "Haiku triager" handles 80% of routine CI log failures, escalating only complex issues to a "frontier" Opus model. This tiered system allows the expensive model to focus on orchestration and delegation while low-cost agents perform the data-heavy tasks, resulting in significantly more efficient LLM operations.