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GitHub Introduces Project HydraFusion: Runtime Multi-Model Orchestration That Builds a Workflow Per Coding Task in Copilot CLI

GitHub has released Project HydraFusion, a research preview that stops treating model choice as a one-time setting. Instead of routing your prompt to a single model, HydraFusion builds an execution plan per request. It can draft with one model, have a second model critique the draft, or escalate to a stronger model when a quality gate rejects the first attempt. Models come from multiple providers. The developer picks HydraFusion once, the same way they would pick any other model. Is it deplo

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Project HydraFusion is a research preview tool that automatically selects which coding model to use and how to use it, rather than requiring a developer to pick a single model once. Instead of routing every request to one model, HydraFusion builds a custom execution plan for each task, choosing from three patterns: having one model solve it directly, having an efficient model draft a solution that escalates to a stronger model if needed, or having one model draft while another independently reviews and critiques it. The system is available in GitHub Copilot CLI and tracks costs carefully by billing for tokens consumed at each model's standard rate. In testing on coding benchmarks, HydraFusion achieved significantly lower costs than baseline models while maintaining comparable quality, suggesting it can optimize the tradeoff between speed, quality, and expense for different coding tasks.

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