Morph by Modelcode

What it does

Morph by Modelcode is an AI platform for modernizing large-scale production codebases. It plans migrations as reviewable milestones, runs automated code review, and verifies functional behavior before changes merge. It is built for language upgrades, framework migrations, and architecture modernization.

Morph by Modelcode targets teams that need to change large, critical codebases without breaking business logic. It turns a migration into a sequence of milestones, each with a Project Spec, automated code review, acceptance criteria, and functional verification. Your team edits and approves the plan before execution, and each milestone is independently reviewed, verified, and approved. ModelDaemon can run checkout, install, build, test, and application runs on your own infrastructure using outbound-only connections. Pricing is usage-based: Pro includes 40,000 credits each month at $0 per seat, with additional usage at $0.01 per credit, and you see each milestone's expected credit cost before approval. Modelcode's own research reports that repository-scale modernization remains an open problem, with average hidden-test pass rates falling from 91.3% under 10,000 lines of code to 15.3% beyond 50,000. That research is about coding agents generally, not Morph specifically. The source does not state whether a free plan, API, or open-source license is available, so those remain unknown.