Lithium Mod Download for Minecraft 26.3 NeoForge: Faster Ticks, Smoother Worlds
Quick answer: Lithium Mod is a free performance mod that speeds up Minecraft’s game logic instead of its graphics. The latest release is Lithium 0.26.2 for Minecraft 26.3, and the download below is the NeoForge build, verified on Modrinth today. It makes ticking, mob AI, physics, and chunk updates run faster, so busy worlds feel smoother. Install NeoForge for 26.3, drop the .jar into your mods folder, and launch the game. No settings to change, no other mods required on NeoForge.
Sodium fixes how Minecraft draws the world. Lithium fixes how Minecraft thinks about the world. That is the difference between the two mods, and it is why most serious performance packs run both. Sodium makes frames render faster. Lithium makes the game itself tick faster: mobs pathfind with less work, hoppers move items with fewer checks, block entities update on a tighter schedule, and chunk loading wastes less time on work the player will never see.
Lithium comes from jellysquid, the same developer behind Sodium, and it is maintained under the CaffeineMC group. It has more than 140 million downloads on Modrinth, which makes it one of the most installed performance mods in the game. It changes no textures, adds no items, and alters no mechanics. A world with Lithium plays exactly like the same world without it, just with less lag behind the scenes.
Minecraft 26.3 · NeoForge · v0.26.2 · Official download
What Lithium actually does
Every tick, Minecraft runs a long list of jobs: update every mob, check every hopper, tick every furnace, grow every crop, move every item entity, and recalculate light and pathfinding wherever something changed. Vanilla code does much of this work in the most literal way possible, checking things that do not need checking and repeating calculations that have not changed since the last tick.
Lithium rewrites those inner loops. It caches results that stay valid, skips checks that cannot change the outcome, and replaces slow data structures with faster ones. The game still produces the same results. A hopper still moves items at the same rate. A mob still walks the same path. The difference is that the server thread finishes the same work in less time, which leaves more room for everything else.
The gains show up most in busy worlds. A base with 40 hoppers, a mob farm with 200 entities, a village full of villagers, or a chunk loaded with redstone contraptions will all run smoother. On a quiet world with one player and a small house, Lithium changes almost nothing, because there was no ticking work to save in the first place.
How much faster will your world run
There is no honest single number. The gain depends on what is in your world, not on your graphics card. Lithium does not touch rendering, so it will not raise your frame rate directly in the way Sodium does. What it does is lower the time the game spends on each tick, which keeps the tick rate at a steady 20 ticks per second in worlds where vanilla would start to fall behind.
The clearest sign it is working is the MSPT number. Press F3 and look at the ms/tick value in the debug screen. In a heavy base, Lithium can cut that number by a third or more. When MSPT drops below 50, the game holds a full 20 TPS. When it climbs above 50, the game starts to slow down: mobs move in slow motion, crops grow late, and redstone fires late. Lithium buys back that headroom.
Players who run servers feel it most. A server with 20 players and a few big farms will stay at 20 TPS far longer with Lithium installed. Singleplayer worlds benefit too, but the effect is smaller, because one player’s world has less ticking work than a whole server.
Compatibility: versions, loaders, and what it needs
| Minecraft version | Latest Lithium | Loaders |
|---|---|---|
| 26.3 | 0.26.2 (release) | NeoForge, Fabric |
| 26.2 | 0.26.1 | NeoForge, Fabric |
| 1.21.1 | 0.15.1 | Fabric, NeoForge |
The download on this page is Lithium 0.26.2 for Minecraft 26.3 on NeoForge. A Fabric build of the same version is on the same Modrinth project page if you play on Fabric instead. The NeoForge build has no dependencies. The Fabric build needs Fabric API installed alongside it, which is a one-file addition to the same mods folder.
Lithium works in multiplayer and on servers. On a server it must be installed server-side to help the server tick faster. On a client it helps singleplayer worlds and reduces the work your own game does when hosting a LAN world. It does not change gameplay, so it will not get you flagged on servers that allow mods.
Lithium also works with Sodium. The two mods are made by the same group, they target different parts of the game, and they are tested together. Installing both is the standard performance setup, and it is what most modpacks do. For the rendering side of that setup, see our Sodium Mod download and our best performance mods for 2026, where both mods sit at the top of the list.
Mods that pair well with Lithium
Lithium covers game logic. Three companions cover the rest:
- Sodium. Fixes rendering, the part Lithium does not touch. Together they cover the two biggest sources of lag in the game.
- Entity Culling. Skips drawing entities hidden behind walls, which helps in villages, mob farms, and bases full of item frames. See our Entity Culling Mod download.
- ModernFix. Another logic optimizer that patches a different set of slow code paths. It can run next to Lithium, though most players pick one or the other.
Start with Lithium alone, check your MSPT with F3, then add Sodium and measure again. Adding one mod at a time is the only way to know which mod gave you what.
How to install Lithium
- Install a mod loader for Minecraft 26.3. This download is the NeoForge build, so install NeoForge for 26.3 from the official NeoForge site. If you play on Fabric, grab the Fabric build of Lithium 0.26.2 from Modrinth instead, and add Fabric API to your mods folder as well. Our NeoForge install guide walks through the setup.
- Download Lithium 0.26.2 using the button above. The file is lithium-neoforge-0.26.2+mc26.3.jar, about 0.9 MB.
- Open the Minecraft launcher, select the NeoForge 26.3 profile, and click Play once so the game creates its folders. Close the game.
- Press Windows + R, type %appdata%\.minecraft\mods, and press Enter. On Mac, open Finder, press Cmd + Shift + G, and enter ~/Library/Application Support/minecraft/mods.
- Move the lithium .jar file into the mods folder. Do not unzip it.
- Launch the game with the NeoForge profile. Lithium has no menu and no settings screen. If the game loads, Lithium is running.
If the game crashes on launch, the usual cause is a version mismatch: a Fabric Lithium jar in a NeoForge mods folder, or a 26.2 jar on 26.3. Check the file name first. Our mod crash troubleshooting guide covers the rest of the common cases.
Is Lithium safe to download
Yes, when you get it from Modrinth. Lithium is open source, its code is public, and the Modrinth listing is maintained by the developers themselves. Download counts and version history are visible on the project page, which is how you confirm a file is genuine. Never download Lithium from a re-upload site or a “free mods” aggregator. Those copies are where malware hides, and they are often outdated versions with the version number changed.
The download button on this page points directly at the Modrinth CDN file for Lithium 0.26.2, NeoForge, Minecraft 26.3. It starts the .jar download immediately, with no installer, no extra software, and no account needed.
Frequently asked questions
Is Lithium free?
Yes. Lithium is free and open source. The developers accept donations, but no feature is locked behind a payment.
Does Lithium increase FPS?
Not directly. Lithium speeds up game logic, not rendering. In a world that lags because of ticking, a lower MSPT can smooth out stutters and raise the frame rate indirectly. For raw FPS, install Sodium alongside it.
Does Lithium change how the game plays?
No. Lithium keeps the same game rules and the same results. Mobs, farms, redstone, and crops behave exactly as they do in vanilla. It only does the same work faster.
Can I use Lithium with Forge?
Lithium has no official Forge build. It supports Fabric and NeoForge. If you play on Forge, the closest equivalent is a different optimization mod built for Forge, and the NeoForge build of Lithium will not load in a Forge mods folder.
Does Lithium work on servers?
Yes, and servers are where it helps most. Install it in the server’s mods folder to speed up server ticking. Players do not need it on their own clients for the server to benefit, though it helps their singleplayer worlds too.
Verdict
Lithium is the quiet half of the Minecraft performance stack. It adds nothing you can see, it has no settings to tweak, and on a quiet world it changes almost nothing. On a busy world, it is the difference between a server holding 20 TPS and one that stutters every time a farm runs. It is a single small file, it takes two minutes to install, and it is free. Install it with Sodium and you have covered both halves of Minecraft lag: rendering and logic. If your world lags and your frame rate is already fine, Lithium is the first mod to try.
