HydraFusion updates and new Max option

GitHub updated HydraFusion with an expanded model pool including Claude Opus 5.5, GPT-6 Astra, GPT-6.1 Sol, and GPT-6 Luna, improved orchestration workflows (tailored reasoning effort, cascade with judging step, critique using tools and parallel critics), and introduced HydraFusion Max, a tier tuned for frontier capability on more demanding tasks.

Both remain in research preview and are available across VS Code, the GitHub Copilot app, and GitHub Copilot CLI on Copilot Pro, Pro+, Business, and Enterprise plans with experimental or preview features enabled.