I Installed PewDiePie's Free AI on My Mac (Odysseus + Claude, No GPU)

PewDiePie built a free AI workspace called Odysseus, and it looks exactly like ChatGPT, except it runs entirely on your own machine. It is open source, MIT licensed, and your data never leaves your computer.

Most people run it with a local model and a beefy GPU. I do not have one. So I run it with a Claude API key instead, which works on any Mac or PC with no GPU at all. Here is the full setup.

What Is Odysseus

Odysseus is a free, open-source, self-hosted AI workspace. Think of it as ChatGPT's interface, but it runs locally on your hardware. The GitHub repo crossed 20,000 stars within about a day of launch. It supports local models, but the part nobody is showing is that you can point it at a hosted model like Claude with just an API key, which removes the GPU requirement entirely.

Odysseus AI chat workspace running locally, a ChatGPT-style interface — Odysseus running locally: a clean, ChatGPT-style workspace, powered by Claude.

What You Need

Docker Desktop (free). The repo offers a native clone-and-run path too, but Docker is the recommended method and the one used here.
An Anthropic Claude API key. This is what replaces the local model and GPU.

Step 1: Get a Claude API Key

Go to console.anthropic.com and sign in. Click Get API key, give it a name (I called mine "odysseus-test"), and create it. Copy the key and keep the page open. You will paste it into Odysseus after setup.

Create API key dialog in the Claude Console, naming the key odysseus-test — In the Claude Console, click Get API key, give it a name (I used "odysseus-test"), and create it.

Step 2: Clone the Repo

Start Docker Desktop so the engine is running. Then, in your terminal, clone the Odysseus repo, move into the folder, and create the .env file from the template:

git clone https://github.com/pewdiepie-archdaemon/odysseus.git
cd odysseus
cp .env.example .env

Odysseus GitHub repo Quick Start with the Docker setup commands — The official Quick Start. The .env holds deployment settings like the port; your API key does not go here, it goes in the app later.

Step 3: Run It With Docker

Build and start everything with one command:

docker compose up -d --build

The first build takes a few minutes. When it finishes, confirm the containers are healthy:

docker compose ps

Terminal showing Odysseus Docker containers running and healthy — All containers running and healthy: the app, ChromaDB, and the SearXNG search engine.

The gotcha that trips most people up: opening localhost:7000 may not load. Use the IP directly instead:

http://127.0.0.1:7000

Step 4: Create Your Admin Account

On first load, Odysseus asks you to create an admin account. Set a username (I used admin) and a strong password.

Odysseus create admin account screen — First run prompts you to create an admin account.

Step 5: Add Your Claude API Key

Click the settings icon in the left sidebar, then Add model. Choose Anthropic as the provider, paste your Claude API key, and click Test to verify it. It should confirm the key works and list the available Claude models. Click Add.

Adding an Anthropic Claude API key in Odysseus settings — Add the Anthropic provider in Settings, paste your key, and Test. No GPU, no local model download.

Test It: Agent Mode

Start a new chat, pick a model (I chose a cheaper one, Haiku, to avoid surprises on the bill), switch to Agent mode, and give it a real task:

Write a bash script that backs up my Documents folder to a dated archive.

Claude writes the script and actually runs it. One thing to know: the agent runs inside the Docker container, so the test backup it creates lands at /app/backups inside the container, not on your Mac directly. You can copy the script out and run it on your own machine to back up your real files.

Odysseus agent mode writing and running a bash backup script with Claude — Agent mode: Claude writes the backup script, runs it, and reports back.

Or Just Chat

Switch to plain Chat mode for normal questions. Paste in a snippet of code and ask it to "summarize this in a table," and Claude returns a clean formatted table, the same as ChatGPT, but private and running on your own setup.

Odysseus chat mode summarizing code in a table with Claude — Chat mode: ask Claude to summarize code in a table.

Free Web Search, No API Key

When you run the Docker setup, it automatically configures SearXNG, an open-source search engine, as a container. That means Odysseus can search the web out of the box with no search API key and no cost. Turn on search mode and ask for the latest news, and it pulls live results for free.

Odysseus web search mode powered by the free SearXNG engine — Free web search via the bundled SearXNG engine, no API key required.

Themes and the Rest

Odysseus ships with a lot more than chat: a brain for memories, skills, a cookbook of models your machine can run, deep research, a gallery for image editing, notes, and scheduled tasks. It also has theme options, including a ChatGPT-style theme and a Claude-style theme, so you can make it feel like whichever app you prefer.

Odysseus theme picker with ChatGPT and Claude themes — Theme options, including ChatGPT-style and Claude-style looks.

That's It

You now have PewDiePie's Odysseus running with Claude: a private, self-hosted AI workspace with no GPU and no monthly subscription, just pay-as-you-go API usage. Everything stays on your machine.

Watch the Full Walkthrough

If setup guides like this are useful, subscribe to AyyazTech on YouTube. More Odysseus deep-dives are coming.

Tools I Use

Hostinger for VPS and hosting: ayyaztech.com/go/hostinger
Claude and Claude Code, my daily AI pair-programmer: claude.ai
VS Code, my editor: code.visualstudio.com

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