Project HydraFusion: Frontier quality via multi-model orchestration

Project HydraFusion is a new research preview that automatically selects the best combination of AI models and execution patterns for each developer task, choosing between single-model solutions, cascading to more powerful models, or using critique workflows. In offline evaluations, HydraFusion achieved frontier-level quality while reducing estimated costs by 67% compared to Claude Opus 5, optimizing for performance, cost, and latency without requiring developers to manually manage model selection.