IN THE FIELD GUIDE
prefix
prefix.dev
Prefix.dev provides a modern software package management platform that enables reproducible, cross-platform environments with over 36,000 packages supporting multiple languages and GPU & SIMD. It ensures consistent environments across machines and CI with a single lockfile and offers fast installs up to 10× faster than conda or mamba.
THE PRODUCT, BEYOND THE PITCH
Editorially reviewed · Sources checked Sep 14, 2026
A good fit for
- Machine learning projects requiring GPU-ready environments with PyTorch, CUDA, and Transformers.
- Teams needing supply chain security with trusted publishing and Sigstore attestations integrated into the conda ecosystem.
Know the limitations
- Free plan limits to 1 user, 1 private channel, 500 Mb private package storage, and 3 Gb public package storage.
- Pro plan includes 5 users and 10 Gb private/public package storage; extra users and storage incur additional fees.
What you can do
- Data science environments with Jupyter, pandas, SciPy, reproducible across Windows, macOS, and Linux.
- Robotics development with reproducible ROS 1 & 2 workspaces on laptop, CI, and robot without Docker.
Features
- Reproducible, cross-platform environments with a single lockfile.
- Fast installs using parallel downloads, Rust-native solver, and smart caching.
- Built-in task system to run code with one command.
- Global CDN for package distribution available in Pro and higher plans.
- Trusted publishing with GitHub Sign-in, Google Sign-in, and Passkey authentication.
Integrations
- Access to conda-forge ecosystem including Python, R, C++, CUDA, Fortran, and more.
Platforms & data export
- Cross-platform support for Windows, macOS, and Linux environments.
THE COST FOR YOUR TEAM
Go beyond the starting price.
Published plan prices for your team size and usage. Results update as you type. Taxes, currency conversion and unlisted add-ons are excluded, and anything the source did not state is called out rather than guessed.
Known monthly subtotal
$0.00/month
1 of 1 tools could not be priced with these inputs, so this is not the full cost.
| Tool / plan | Monthly | Per year | What this assumes |
|---|---|---|---|
| No plans published in USD. Switch currency to see this tool's prices. | |||
A practical workflow
- Install Pixi by running a curl command to execute an install script.
- Clone any Pixi project and run it instantly using the built-in task system.
- Use a single lockfile to ensure identical software environments across devices and CI.
- Create a recipe.yaml file describing package metadata, build scripts, and dependencies.
- Build the package using the command rattler-build build --recipe recipe.yaml, which creates an isolated environment, runs the build script, packages the result, and tests it.
Based on the sources below. Editorial review does not imply hands-on product testing.
Alternatives to explore
Filter alternatives →Candidates based on category and primary feature. Check feature and pricing differences before switching.
Plan a switch from prefix →What changed
Changes to the facts recorded here, not a live scan of every vendor update. Save this tool to follow updates in your account.
Updated: best for, features, integrations, limitations, plans, platforms, sources, summary, use cases, walkthrough
See recorded changes
bestForBefore: ["Engineers in machine learning, data science, robotics, scientific computing, HPC, simulation, and embedded systems.","Teams needing reproducible environments across diverse platforms and workflows including CI and deployment."]
After: ["Machine learning projects requiring GPU-ready environments with PyTorch, CUDA, and Transformers.","Teams needing supply chain security with trusted publishing and Sigstore attestations integrated into the conda ecosystem."]
featuresBefore: ["Reproducible, cross-platform environments with one lockfile for consistency across machines.","Fast installs up to 10× faster than conda or mamba using parallel downloads, Rust-native solver, and smart caching.","Built-in task system allowing running code with one command after cloning a Pixi project.","Supports over 36,000 open source packages including Python, R, C++, CUDA, Fortran, and more from conda-forge ecosystem.","Supply chain security with trusted publishing and Sigstore attestations built into the conda ecosystem."]
After: ["Reproducible, cross-platform environments with a single lockfile.","Fast installs using parallel downloads, Rust-native solver, and smart caching.","Built-in task system to run code with one command.","Global CDN for package distribution available in Pro and higher plans.","Trusted publishing with GitHub Sign-in, Google Sign-in, and Passkey authentication."]
integrationsBefore: []
After: ["Access to conda-forge ecosystem including Python, R, C++, CUDA, Fortran, and more."]
limitationsBefore: []
After: ["Free plan limits to 1 user, 1 private channel, 500 Mb private package storage, and 3 Gb public package storage.","Pro plan includes 5 users and 10 Gb private/public package storage; extra users and storage incur additional fees."]
plansBefore: []
After: [{"name":"Pro","note":"Automatically extracted from the linked pricing source. Seat allowances, usage limits, taxes and terms are not confirmed — check them with the provider.","annual":null,"monthly":42,"perSeat":false,"currency":"EUR","features":[],"extraUnit":null,"unitLabel":"","maximumSeats":null,"minimumSeats":1,"includedUnits":null,"startingPrice":false,"seatsConfirmed":false},{"name":"Enterprise","note":"Contact the provider for a quote.","annual":null,"monthly":null,"perSeat":false,"currency":"EUR","features":[],"extraUnit":null,"unitLabel":"","maximumSeats":null,"minimumSeats":1,"includedUnits":null,"startingPrice":false,"seatsConfirmed":false}]
platformsBefore: ["Supports Windows, macOS, and Linux platforms for reproducible environments."]
After: ["Cross-platform support for Windows, macOS, and Linux environments."]
sourcesBefore: [{"url":"https://prefix.dev/","label":"prefix.dev – solving software package management"},{"url":"https://rattler-build.prefix.dev/latest/getting_started/","label":"Getting started - Rattler-Build"}]
After: [{"url":"https://prefix.dev/","label":"prefix.dev – solving software package management"},{"url":"https://prefix.dev/pricing","label":"prefix.dev – solving software package management"},{"url":"https://rattler-build.prefix.dev/latest/getting_started/","label":"Getting started - Rattler-Build"}]
summaryBefore: "Data science environments with tools like Jupyter, pandas, SciPy, reproducible across Windows, macOS, and Linux. Reproducible, cross-platform environments with one lockfile for consistency across machines. Fast installs up to 10× faster than conda or mamba using parallel downloads, Rust-native solver, and smart caching."
After: "Prefix.dev provides a modern software package management platform that enables reproducible, cross-platform environments with over 36,000 packages supporting multiple languages and GPU & SIMD. It ensures consistent environments across machines and CI with a single lockfile and offers fast installs up to 10× faster than conda or mamba."
useCasesBefore: ["Data science environments with tools like Jupyter, pandas, SciPy, reproducible across Windows, macOS, and Linux.","Robotics development with reproducible ROS 1 & 2 workspaces on laptops, CI, and robots without Docker.","Machine learning environments with PyTorch, CUDA, scikit-learn, and Transformers, supporting multiple GPUs and optimization targets."]
After: ["Data science environments with Jupyter, pandas, SciPy, reproducible across Windows, macOS, and Linux.","Robotics development with reproducible ROS 1 & 2 workspaces on laptop, CI, and robot without Docker."]
walkthroughBefore: ["Clone any Pixi project and run it instantly using the built-in task system.","Use one lockfile to ensure identical software environments across laptops, CI, and coworkers' machines.","Build the package using 'rattler-build build' command which creates isolated environment, runs build script, packages result, and runs tests."]
After: ["Install Pixi by running a curl command to execute an install script.","Clone any Pixi project and run it instantly using the built-in task system.","Use a single lockfile to ensure identical software environments across devices and CI.","Create a recipe.yaml file describing package metadata, build scripts, and dependencies.","Build the package using the command rattler-build build --recipe recipe.yaml, which creates an isolated environment, runs the build script, packages the result, and tests it."]