Turborepo vs Nx 2026: Which Monorepo Tool Wins

Why Monorepos Need Tooling

A monorepo without tooling is just a large repository. The value of a monorepo comes from shared tooling that enables incremental builds, task caching, dependency graph analysis, and coordinated versioning. Without these, you get the downsides (complexity, slow CI) without the upsides (code sharing, atomic changes).

Turborepo, Nx, and Lerna represent three generations of monorepo tooling for the JavaScript ecosystem. Lerna pioneered the space, Nx expanded it into a full build system, and Turborepo stripped it back to essentials. Each tool makes different assumptions about how much it should own.

Setup and Configuration

Turborepo is the simplest to adopt. Add it to an existing workspace and define a pipeline in turbo.json:

// turbo.json
{
  "tasks": {
    "build": {
      "dependsOn": ["^build"],
      "outputs": ["dist/**", ".next/**"]
    },
    "test": {
      "dependsOn": ["build"]
    },
    "lint": {},
    "dev": {
      "cache": false,
      "persistent": true
    }
  }
}

That is essentially the entire configuration. Turborepo reads your package manager's workspace configuration (npm, pnpm, or yarn workspaces) and infers the dependency graph from package.json files.

Nx requires more initial setup but provides more out of the box. Running npx nx init in an existing workspace adds an nx.json configuration and optionally a project.json per package:

// nx.json
{
  "targetDefaults": {
    "build": {
      "dependsOn": ["^build"],
      "cache": true
    },
    "test": {
      "cache": true
    }
  },
  "defaultBase": "main"
}

Nx also supports plugins that add framework-specific capabilities (Next.js, React, Angular, Node). These plugins generate boilerplate, provide migrations for upgrades, and configure build targets automatically.

Lerna uses a lerna.json configuration file. Since Nx acquired Lerna in 2022, Lerna now uses Nx under the hood for task running and caching. The standalone Lerna experience is essentially a simpler interface on top of Nx's engine.

Task Orchestration

The core job of a monorepo tool is running tasks in the correct order based on the dependency graph.

Consider a monorepo with packages A, B, and C, where C depends on B, and B depends on A. Running build should build A first, then B, then C.

All three tools handle this correctly. The differences emerge in parallel execution and task configuration:

Nx's interactive dependency graph viewer is particularly useful for large monorepos. You can explore package relationships, see which packages are affected by a change, and understand the build order visually.

Caching

Caching is what makes monorepo tools worthwhile. If a package has not changed since the last build, skip the build and use the cached output.

Turborepo caches task outputs based on input hashes. The hash includes source files, dependencies, environment variables, and the task configuration. Local caching works out of the box. Remote caching is available through Vercel (free for personal use, paid for teams) or self-hosted via open-source implementations.

Nx uses a similar input-hash-based cache. Local caching is built in. Remote caching is available through Nx Cloud (free for small teams, paid for larger organizations). Nx Cloud also provides distributed task execution, which splits a CI pipeline across multiple machines.

Lerna uses Nx's caching engine. The cache behavior is identical to Nx.

In our testing with a 12-package monorepo, caching reduced CI build times dramatically:

Both Turborepo and Nx achieve near-instant builds when the cache is fully populated. The small time difference is within measurement noise.

Affected Analysis

When a PR changes one package, which other packages need to be rebuilt and tested? Both Turborepo and Nx answer this question, but their approaches differ.

Turborepo uses the dependency graph from package.json files. If package B depends on package A and you change A, Turborepo will rebuild both A and B. This is correct but coarse — changing a README in package A will trigger a rebuild of B even though nothing meaningful changed.

Nx performs fine-grained file-level analysis. It tracks which files each project depends on and can determine that a README change in package A does not affect package B's build. This is more accurate but requires Nx to maintain a project graph that goes beyond package.json relationships.

For monorepos with 5-15 packages, this difference is negligible. For monorepos with 50+ packages, Nx's fine-grained analysis can save significant CI time.

CI Integration

Both tools work in any CI environment. The key CI features:

Turborepo integrates natively with Vercel's CI and works well with GitHub Actions, CircleCI, and others. Remote caching requires either Vercel's service or a self-hosted cache server.

Nx offers Nx Cloud, which provides remote caching and distributed task execution (DTE). DTE is Nx's most compelling CI feature — it automatically distributes tasks across multiple CI agents, reducing wall-clock time for large builds:

# nx.json - distribute across CI agents
{
  "tasksRunnerOptions": {
    "default": {
      "runner": "nx-cloud",
      "options": {
        "cacheableOperations": ["build", "test", "lint"]
      }
    }
  }
}

For teams running 30+ minute CI pipelines, Nx Cloud's distributed execution can cut times to under 10 minutes by parallelizing across agents.

Versioning and Publishing

If your monorepo publishes npm packages, versioning and changelog generation matter.

Lerna was originally built for this use case and does it well. lerna version and lerna publish handle version bumping, changelog generation, and npm publishing with support for both fixed and independent versioning.

Nx added a release feature (nx release) that handles versioning, changelogs, and publishing. It supports conventional commits for automatic version determination.

Turborepo does not handle versioning or publishing. You need a separate tool like Changesets, which is the most popular choice in the Turborepo ecosystem.

Learning Curve and Documentation

Turborepo's documentation is concise and focused. You can read the entire docs in an afternoon and understand the tool completely. The mental model is simple: define tasks, define dependencies between tasks, and let Turborepo handle caching and ordering.

Nx's documentation is comprehensive but overwhelming for newcomers. The tool has many features, plugins, and concepts (executors, generators, project crystals). The learning curve is steeper, but the capabilities are broader.

Lerna's documentation is adequate but reflects its history — some patterns are legacy, and it is not always clear which features come from Lerna versus the underlying Nx engine.

Who Should Use What

Choose Turborepo if:

• You want the simplest possible monorepo setup
• Your monorepo has fewer than 20 packages
• You deploy on Vercel (native integration)
• You prefer minimal configuration and a small learning curve

Choose Nx if:

• Your monorepo is large (20+ packages) or growing rapidly
• You need fine-grained affected analysis
• Distributed CI execution would significantly reduce your build times
• You use Angular (Nx originated in the Angular ecosystem and has the deepest integration)

Choose Lerna if:

• You have an existing Lerna monorepo (migration is not free)
• Your primary need is package versioning and publishing
• You want Nx's caching without fully committing to Nx's ecosystem

The Verdict

Turborepo and Nx are both excellent tools that solve the monorepo problem from different angles. Turborepo is the better choice for small-to-medium monorepos where simplicity is valued. Nx is the better choice for large monorepos where advanced features like distributed CI and fine-grained analysis pay dividends.

Lerna's role has diminished. It remains useful for package publishing workflows, but for task running and caching, Turborepo and Nx are both superior options. If you are starting a new monorepo in 2026, the choice is between Turborepo and Nx.

[AFFILIATE:turborepo] Turborepo on Vercel · [AFFILIATE:nx] Try Nx Cloud