Hermes Agent is an open source AI agent from Nous Research that you run yourself. It keeps persistent memory across sessions, writes its own reusable skills from the problems it solves, and can be reached from a desktop app, a terminal or a messaging gateway covering Telegram, Discord, Slack, WhatsApp, Signal and email, so one agent and one memory follow you across every surface.
It is aimed at developers and technical users who want an always available assistant under their own control. Capabilities include natural language scheduling for reports, backups and briefings that run unattended, isolated subagents with their own conversations and terminals, web search, browser automation, vision, image generation and text to speech. Code can run in five sandbox backends: local, Docker, SSH, Singularity and Modal. Desktop apps are available for macOS 12 and later and Windows 10 and 11, and Linux users install from the terminal. A hosted cloud deployment is optional.
The agent software is free under the MIT license, and you can bring your own model provider. Nous Portal is the optional paid route to models and tools: Free is $0 with free models only, Plus is $20 per month with $22 in monthly credits, Super is $100 per month with $110 in credits, and Ultra is $200 per month with $220 in credits. Paid tiers include 200 or more models, hosted tool usage and higher rate limits, and each carries a 10 percent credit bonus with a rollover cap.
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