How to Install Lemonade Local AI on Ubuntu 26.04 and 24.04

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Lemonade is a free, open-source app that runs AI models on your own Ubuntu PC, so your chats, code and images never leave your computer. This guide shows you how to install it on Ubuntu 26.04 and 24.04, download your first model and connect your favourite apps to it.

Not sure which method to pick? On Ubuntu 26.04 or 24.04, use the official PPA. On Ubuntu 26.10 or 22.04, use the Snap. Not sure which one you have? Check your Ubuntu version.

Method 1: Install Lemonade from the Official PPA (Recommended)

Works on Ubuntu 26.04 and 24.04. A PPA (Personal Package Archive) is an extra software source on Launchpad that apt, Ubuntu’s package manager, can install and update from. The Lemonade team publishes its own builds there. On 9 November 2026 the PPA had Lemonade 2026.45.3 for both releases, the same version as the latest stable release on GitHub.

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Step 1: Add the Lemonade PPA

Open a terminal (press Ctrl+Alt+T), run this command and type your password when asked. Press Enter to confirm when it shows the PPA details.

Add the PPA
sudo add-apt-repository ppa:lemonade-team/stable
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Step 2: Make sure apt will use the PPA

Check which version apt is going to install:

Check the candidate version
apt-cache policy lemonade-server

The Candidate line should show a version like 2026.45.3~26.04 (or ~24.04) coming from ppa.launchpadcontent.net/lemonade-team/stable. If it says (none), your Ubuntu release is not covered by the PPA, so use the Snap in Method 2.

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Step 3: Install Lemonade Server

This installs the server, the lemonade command and the web app. The package also creates a background service called lemond and starts it for you.

Install Lemonade Server
sudo apt install lemonade-server
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Step 4: Check that it worked

Confirm the version and that the service is running:

Check the install
lemonade --version
systemctl --no-pager status lemond

You should see lemonade version 2026.45.3 and active (running). If the service is not running, start it with sudo systemctl enable --now lemond.

Ubuntu terminal for jenny@ubuntufree adding the Lemonade PPA, installing lemonade-server and pulling Qwen3-0.6B-GGUF
Adding the PPA, installing Lemonade Server and loading a first model from the terminal.

Method 2: Install Lemonade with Snap

Works on Ubuntu 26.10, 26.04, 24.04 and 22.04. Snap is Ubuntu’s built-in app store format, and every app runs in its own sandbox. The lemonade-server Snap is published by Ken VanDine, a verified Star developer on the Snap Store, and its stable channel had version v2026.45.3 on 9 November 2026. Use it when the PPA does not cover your release.

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Step 1: Install the Snap

The server starts automatically after the install finishes.

Install with Snap
sudo snap install lemonade-server
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Step 2: Check the service

Check the Snap service
sudo snap services lemonade-server

Look for lemonade-server.daemon with enabled and active. With the Snap, the command is lemonade-server instead of lemonade, so you type lemonade-server list or lemonade-server pull.

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Step 3: Connect the GPU helper (if you want Vulkan)

Vulkan GPU support comes from the mesa-2404 Snap, which installs automatically. If GPU models do not show up, connect it by hand and restart the service:

Connect Vulkan support
sudo snap connect lemonade-server:gpu-2404 mesa-2404:gpu-2404
sudo snap restart lemonade-server.daemon

Other Ways to Install Lemonade

Optional

Want a desktop app window? Add Lemonade Desktop

You do not need this, because the web app works in any browser. If you prefer a separate app window, the PPA has lemonade-desktop, which opens the web app in Chromium:

Desktop app from the PPA
sudo apt install lemonade-desktop

Snap users can install the fully sandboxed desktop client instead:

Desktop app from the Snap Store
sudo snap install lemonade

Ubuntu 22.04 LTS: the PPA has no 22.04 build, so use the Snap from Method 2. Ubuntu 26.10: the PPA only has an older build for 25.10, so the Snap is the way to get the current release.

Compare the Methods

Method Ubuntu Made by Version (9 Nov 2026) Updates
Official PPA 26.04, 24.04 The Lemonade team 2026.45.3 With sudo apt upgrade
Snap 26.10, 26.04, 24.04, 22.04 Ken VanDine (Star developer) v2026.45.3 Automatic, or sudo snap refresh
Lemonade Desktop 26.04, 24.04 (PPA) or any (Snap) The Lemonade team Optional app window Same as its source

Open Lemonade

Lemonade runs in the background, so there is nothing to launch. Open your browser and go to http://localhost:13305. If you installed Lemonade Desktop, open Lemonade from the apps menu instead. The web app opens on the Chat tab, ready for your first model.

First Run: Download Your First Model

Lemonade does not ship with a model, so you need to download one first. A model is the AI brain that answers your questions. Start small to check everything works. Qwen3-0.6B-GGUF is only 0.38 GB and runs fine on a normal CPU. In our test it answered at about 28 tokens (small word pieces) per second with no graphics card at all.

See the models and download one
lemonade list
lemonade pull Qwen3-0.6B-GGUF

When you want a smarter model, try Gemma-4-E2B-it-GGUF (4.1 GB) or Qwen3-4B-GGUF (2.4 GB). Our Qwen on Ubuntu guide explains how the model sizes compare. Lemonade hides models that are too big for your RAM, so anything in the list should fit. Then pick the model in the Model box under the chat and start typing. To load a downloaded model and open the web app in one go, use:

Load a model and open the web app
lemonade run Qwen3-0.6B-GGUF
Lemonade web app at localhost:13305 answering a question with the Qwen3-0.6B-GGUF model running on the CPU
The Lemonade web app chatting with Qwen3-0.6B on a CPU only machine. The speed and token count show under each answer.

A Quick Look Around Lemonade

The web app has six tabs along the top:

  • Chat: talk to text models, attach images for vision models and turn the Thinking mode on or off.
  • Models: the built-in catalog of more than 80 models for chat, images, speech, transcription and embeddings, plus search across Hugging Face and ModelScope.
  • Backends: the engines that run models, such as llama.cpp, whisper.cpp and stable-diffusion.cpp. Install the ones you need with one click.
  • Apps: tools that work with Lemonade out of the box.
  • Monitor: what is loaded and how hard your PC is working.
  • Settings: the server options, also available with lemonade config.
Lemonade Models page listing the downloaded Qwen3-0.6B-GGUF model and the built-in model catalog
The Models tab shows what you have downloaded at the top and the full catalog below, with filters for chat, image, audio and more.

Use Your Graphics Card for Faster Answers

Lemonade starts on the CPU, which works everywhere but is slow for big models. A backend is the engine that runs the model on your hardware. See what your PC can use:

List the backends for your PC
lemonade backends

For most graphics cards, install the Vulkan version of llama.cpp. It works on AMD, Intel and NVIDIA GPUs:

Install the Vulkan backend
lemonade backends install llamacpp:vulkan
  • AMD Radeon and Ryzen AI: Lemonade is sponsored by AMD and also offers ROCm backends and NPU support for Ryzen AI chips. Get your driver ready with our AMD drivers on Ubuntu guide.
  • NVIDIA: a CUDA backend is available for Turing (GTX 16 and RTX 20 series) and newer cards. Install the driver first with our NVIDIA drivers on Ubuntu guide.
  • Intel: use Vulkan, and see our Intel graphics drivers guide.

Connect Your Apps to Lemonade

Lemonade speaks the same language (API) as OpenAI, Anthropic and Ollama, so many apps can use it by changing one address. Point any OpenAI-compatible app at http://localhost:13305/api/v1, with any text as the API key. Test it from the terminal:

Send a test chat request
curl http://localhost:13305/api/v1/chat/completions -H "Content-Type: application/json" -d '{"model":"Qwen3-0.6B-GGUF","messages":[{"role":"user","content":"Say hello to Ubuntu users."}]}'

Lemonade can also start coding agents for you with a local model, for example lemonade launch claude, lemonade launch codex or lemonade launch opencode. For a full chat interface with documents and users, pair it with Open WebUI.

Keep Lemonade Updated

Lemonade ships a new release almost every week.

PPA
sudo apt update && sudo apt upgrade
Snap (also updates on its own)
sudo snap refresh lemonade-server
Update downloaded models
lemonade check-updates
lemonade update-models

Common Problems and Fixes

localhost:13305 does not open
The server is not running. On the PPA, run sudo systemctl enable --now lemond, then check systemctl --no-pager status lemond. On the Snap, run sudo snap restart lemonade-server.daemon. Read the logs with journalctl -u lemond -e or sudo snap logs -f lemonade-server.daemon.
apt says it cannot find lemonade-server
The PPA has no build for your release (for example Ubuntu 26.10 or 22.04), or the PPA was not added. Run apt-cache policy lemonade-server. If there is no candidate, use the Snap.
Answers are very slow
You are probably running on the CPU with a big model. Install the Vulkan backend with lemonade backends install llamacpp:vulkan, or pick a smaller model such as Qwen3-0.6B or Qwen3-1.7B.
A model I want is not in the list
Lemonade hides models that are too large for your memory. You can show everything with lemonade config set disable_model_filtering=true, but models bigger than your RAM or VRAM will not load.
Another PC on my network cannot connect
By default Lemonade only listens on localhost. To share it on your network, run lemonade config set host=0.0.0.0 and set an API key with LEMONADE_API_KEY in /etc/default/lemond (PPA), then restart the service. Only do this on a network you trust.

Remove Lemonade

PPA: remove the packages, the PPA and anything left over:

Remove the PPA version
sudo apt remove lemonade-server lemonade-desktop
sudo add-apt-repository --remove ppa:lemonade-team/stable
sudo apt update
sudo apt autoremove

Check it is gone with apt-cache policy lemonade-server. It should show no installed version and no candidate.

Snap: the --purge option also deletes the Snap’s data and downloaded models.

Remove the Snap version
sudo snap remove --purge lemonade-server

Optional cleanup (PPA): models downloaded by the background service stay in /var/lib/lemonade and can take many gigabytes. Warning: this deletes every downloaded model and setting.

Delete Lemonade data and models
sudo rm -rf /var/lib/lemonade /var/cache/lemonade

Helpful Resources

Lemonade documentation ↗Official install and usage guides
Lemonade on GitHub ↗Source code and release notes
Lemonade PPA ↗Packages for Ubuntu 26.04 and 24.04
Lemonade Server on Snapcraft ↗The Snap for every Ubuntu release
Next step
Install, pull a model, start chatting

Add the PPA or install the Snap, download Qwen3-0.6B to test, then open localhost:13305 and ask your first question.

Related guides: Ollama on Ubuntu · LM Studio for Ubuntu · Open WebUI on Ubuntu · Best open source AI tools for Ubuntu