The Relevance AI alternative Stop paying per action.
Agents that build their own tools and run themselves. Free. Open source.
You run it vs it runs itself
Relevance AI
EXTREMELY
What runs
Side by side
| EXTREMELY | Relevance AI | |
|---|---|---|
| Steps decided by | The agent | Agents, using their assigned tools |
| Missing integration | ✓ Builds it itself | Build a tool, or have Invent build it |
| Starts from | Each agent's job and schedule | Manual, app event, webhook or schedule |
| Approvals | Silent, Logged or Approval per tool | Auto run, approval or agent decides |
| AI | Your plan, keys or local model | Vendor credits or your own keys |
Relevance AI details from relevanceai.com, checked 5 November 2026.
Pick the right one
Relevance AI if
- Visual canvas for multi-agent teams
- Pre-built agents in a Marketplace
- Invent builds and tunes your agents
EXTREMELY if
- Agents that build their own tools
- No fee on the AI you already pay for
- Free, open source, on your computer
Questions
Is EXTREMELY a free Relevance AI alternative? Yes. Open source (AGPL-3.0), runs on your own computer, on the AI you already have. Optional hosting is US$399 a year.
What's the difference between Relevance AI and EXTREMELY? Relevance AI agents run on its platform, built by you or its Invent agent, billed in Actions and credits. EXTREMELY agents run on your computer and your own AI, and the Agency Engineer builds any tool they're missing.
Do I have to build tools myself? No. When an agent is missing a tool, the Agency Engineer builds it (HTTP, MCP or a reviewed code plugin), tests it and asks you once to approve giving it out.