Side by side

Krypton vs Lithium

Both stand on minecraft performance mods. Which one you can start free with, which one lets you read the code, and what each costs once you pay.

Krypton

Free plan Open source LinuxMacSelf-hosted+1

Krypton focuses on Minecraft networking and server performance, with support for both clients and dedicated servers. Its compatibility and support are explicitly best effort, so check the fit with your setup.

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Lithium

Free plan LinuxMacWindows

Lithium offers default performance optimizations across several areas of Minecraft and does not require extra configuration after installation. Use stable builds unless you are comfortable handling potential issues in bleeding-edge builds.

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The facts

	Krypton	Lithium
Free plan	Yes	Yes
Open source	Yes	Not published
Runs on	Linux, Mac, Self-hosted, Windows	Linux, Mac, Windows
Lowest paid plan	Free or on request	Free or on request
Plans published	1	2
Maker	Not published	Not published
Website	github.com	github.com
On minecraft performance mods	#2 of 24	#6 of 24

Krypton: what it does well

Works on both client and server.
Dedicated server support is listed.
Targets server CPU use and tick times.
Supports Fabric and Quilt loaders.
Free and licensed under LGPL-3.0-only.

What to know first

Tuned for Linux.
Compatibility with mods beyond Fabric API, Lithium and Sodium is best effort.
Stability and compatibility are not guaranteed for every setup.
Updates for new Minecraft versions depend on maker availability and need.

Lithium: what it does well

Free and open-source Minecraft mod.
Supports Fabric and NeoForge.
Stable optimizations are enabled by default.
Can run on client or server.
Individual patches can be disabled for compatibility issues.

What to know first

Configuration changes require a game restart.
Bleeding-edge builds may contain bugs or crashes.
Bleeding-edge builds may require debugging comfort.

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