01What Odysseus vs Hermes AI agent means

Odysseus vs Hermes AI agent is a comparison between two open-source AI agents. Odysseus is PewDiePie's new AI agent that works like an agentic operating system with a full UI. Hermes is a standalone AI agent you can run in a desktop app or plug into a larger agent operating system.

In this episode, we tested them side by side to see which one performs better. The goal is to help you decide which agent fits your needs, whether you want a simple one-stop app or a flexible system you can mold.

02Key features: Odysseus vs Hermes

Odysseus and Hermes have very different strengths. Here is what each one offers.

  • Odysseus: a polished, single app you run and manage yourself. It includes built-in sections for calendar and email. It also has a cookbook that recommends and grades local models based on your setup.
  • Hermes: a standalone AI agent that works in a desktop app or inside an agent operating system. It supports multiple memory systems you can plug in. It also has a news portal with free APIs and integrates with tools like paperclip.

Hermes is designed to be customizable and to work with other AI agents. Odysseus is more isolated and not meant to be part of a larger system.

03How to set up Odysseus and Hermes

Both agents are free and open source. The setup steps are different because they serve different purposes.

  1. For Odysseus, visit the official setup instructions. If you lack technical expertise, use cloud code and give it the GitHub instructions.
  2. For Hermes, run it inside a desktop app or plug it into an agent operating system.
  3. For Odysseus, choose a local model from the cookbook that fits your hardware. The cookbook grades models to help you pick the best one.
  4. For Hermes, go to the manage section and select between models. It supports cloud-based models and APIs like OpenRouter and OpenAI.
  5. For Hermes, configure your memory system. You can plug in any memory you want, and it's optional and configurable.

Both setups are straightforward if you follow the instructions and have the right tools.

04Using Odysseus and Hermes side by side

When we used both agents with the same model, Gemma 4, they performed very similarly in general day-to-day responses. Hermes gave slightly more in-depth answers, but the difference was not huge.

The user experience is different. Odysseus has a fixed UI that comes out of the box. You cannot customize it much.

For example, clicking the email section opens a pop-up. If you switch between many tools, you can end up with three or four pop-ups layered on top of each other, which is messy.

Hermes, on the other hand, keeps everything clean and organized, whether in the terminal or inside the agent OS. You can customize Hermes to build features like a live voice agent or integrate it into a mission control setup.

05Test results and comparisons

In this episode, we tested both agents side by side. The results show that general performance is similar, but there are key differences.

  • With the same model (Gemma 4), both agents gave similar responses, but Hermes was a bit more in-depth.
  • Odysseus is designed for local models. All the recommended models in its cookbook are local, and it grades them based on your setup.
  • Hermes is optimized for cloud-based models, making it easier to integrate across different platforms.
  • Hermes supports flexible memory options, while Odysseus requires manual import and does not have a living memory shared across agents.

These results show that your choice depends on whether you prefer local privacy or flexibility with cloud services.

06Tips, limits, and mistakes to avoid

There are several important tips and limits to keep in mind when choosing between Odysseus and Hermes.

  • Odysseus is great for beginners who want to test one AI agent without complex setup. It is also good for people who want to keep everything local and private.
  • Hermes shines if you want many agents working together. It can run in the background 24/7, even when you are not hosting it locally.
  • Odysseus is isolated. The brain is built into the app, and you cannot link it live to tools like Obsidian. You can import stuff, but it is not a living memory.
  • Avoid using Odysseus if you want to build a team of agents or integrate with other systems. It is not designed for that.
  • For Hermes, remember that it is customizable. If you do not customize it, you cannot improve it or mold it around your needs.

Think about your long-term goals. AI agents change fast, and a standalone app like Odysseus may be replaced in six months. Hermes, plugged into a system, allows you to swap agents as new ones come out.

07Who should use Odysseus vs Hermes

Odysseus is best for people new to AI agents who want a simple, tidy app. It is also great for those who want to run local models and keep everything private. If you are happy with a 'team of one' AI agent, Odysseus is a good fit.

Hermes is better for users who want 24/7 operation and many agents working together. It is designed to be part of a larger system, so you can build teams and improve over time. If you want a system that adapts, Hermes is the way to go.

In the end, I prefer Hermes because it gives you control and allows you to build systems. But Odysseus is a powerful tool for its niche, and it is good that open-source agents are coming out to drive innovation.