{"slug":"codemod","name":"Codemod","domain":"codemod.com","verdict":"As of 2026-07-17, ChatGPT, Claude, Gemini, Grok collectively rank Codemod #4 of 10 for ai code migration tools for framework upgrades (one of 2 leaderboards it appears on). Source: https://modelsagree.com/product/codemod (modelsagree.com, CC BY 4.0).","best_rank":4,"categories":2,"entries":[{"slug":"best-ai-code-migration-tools-for-framework-upgrades","title":"Best AI code migration tools for framework upgrades","rank":4,"of":10,"score":6,"appearances":2,"modelRanks":{"Claude":4,"Gemini":2},"reason":"Effectively blends compiler-aware AST transformation safety with LLMs, offering a rich community registry of pre-built upgrade recipes (especially for React and Next.js) alongside a CLI and campaign manager.","reasons":[{"model":"Gemini","reason":"Effectively blends compiler-aware AST transformation safety with LLMs, offering a rich community registry of pre-built upgrade recipes (especially for React and Next.js) alongside a CLI and campaign manager."},{"model":"Claude","reason":"The strongest option for the JS/TS ecosystem — combines deterministic codemods (jscodeshift, ast-grep) with AI-generated ones, powers official migrations for frameworks like Next.js and other vendor-published upgrade paths, and its open registry lets framework authors ship upgrades as runnable artifacts; near-tie with AWS Transform, ranked below only because its enterprise scale-out story is younger."}],"fixes":[{"model":"Claude","fix":"Value depends on a codemod existing (or being generated) for your exact migration; long-tail or heavily customized codebases fall back to manual work."},{"model":"Gemini","fix":"It is heavily focused on the JavaScript/TypeScript and front-end ecosystems, making it less useful for deep system languages or backend architectural migrations."}],"updated":"2026-07-17","api":"https://modelsagree.com/api/v1/best/best-ai-code-migration-tools-for-framework-upgrades.json"},{"slug":"best-ai-code-migration-tool","title":"Best AI code migration tool","rank":5,"of":13,"score":4,"appearances":2,"modelRanks":{"Claude":5,"Gemini":3},"reason":"Streamlines organization-wide migrations by providing a centralized registry of community-shared migrations, AI-assisted scaffolding for custom codemods (using ast-grep), and robust campaign dashboards to track execution progress.","reasons":[{"model":"Gemini","reason":"Streamlines organization-wide migrations by providing a centralized registry of community-shared migrations, AI-assisted scaffolding for custom codemods (using ast-grep), and robust campaign dashboards to track execution progress."},{"model":"Claude","reason":"The open-source successor to the jscodeshift tradition with AI-assisted codemod generation and a registry of official migrations (Next.js, React, and other JS/TS framework upgrades) — the best value for frontend/Node teams, and vendor-neutral."}],"fixes":[{"model":"Claude","fix":"Ecosystem depth is overwhelmingly JavaScript/TypeScript; enterprises on JVM/.NET/mainframe stacks will find little here."},{"model":"Gemini","fix":"Its core migration intelligence relies heavily on the availability or custom authoring of static codemod scripts, rendering it less capable for complex logic refactors that require multi-file contextual reasoning."}],"updated":"2026-07-13","rank_history":{"days":["2026-07-11","2026-07-12","2026-07-13"],"ranks":[10,11,5]},"reasoning_shift":[{"model":"Claude","from":"2026-07-12","to":"2026-07-13","added":[{"t":"best value for frontend teams","q":"the best value for frontend/Node teams"},{"t":"vendor-neutral","q":"vendor-neutral"}],"dropped":[{"t":"complex migrations require writing codemods","q":"complex migrations still require writing codemods yourself"}]}],"api":"https://modelsagree.com/api/v1/best/best-ai-code-migration-tool.json"}],"page":"https://modelsagree.com/product/codemod","check":"https://modelsagree.com/check?q=Codemod","updated":"2026-08-10T18:18:45.051Z","attribution":"modelsagree.com, CC BY 4.0"}