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Firmament vs Mem0
Use Mem0 to build a memory layer into an app you are shipping. Use Firmament when the agents your company already runs need shared, governed knowledge, proven against outcomes, with no code to write.
Mem0 and Firmament aren't the same kind of thing. Mem0 is a memory layer you build with: an SDK and platform for developers, with user, agent, and organization scopes you wire up yourself. Firmament is a finished product the agents you already run connect to, where the sharing, the governance, and the proof against outcomes are built in. If you're building, Mem0 may be exactly right. If you're running agents, that's us.
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Side by side
 | Firmament | |
|---|---|---|
| A memory layer you build into your own app | ✓ | A product you connect to |
| Open source, self-hostable, any LLM | ✓ | – |
| Shared and multi-agent memory scopes | you build it in code | built in |
| Works with off-the-shelf agents (Claude Code, Cursor), no code | – | ✓ |
| Curates: keeps, updates, merges, and retires knowledge | extracts and dedupes | ✓ |
| Verified by real outcomes, reinforced and retired by signals | – | ✓ |
| Human approval before knowledge reaches the team | – | ✓ |
| An opinionated knowledge product, not a memory primitive | – | ✓ |
| Knowledge pages the agents write and maintain | – | ✓ |
| Secrets and personal data screened out at write time | – | ✓ |
Isn't this just memory, like Mem0?
Memory is a building block, and a generic one: store something, recall it later. Mem0 gives you that block to build with, in your own code, including shared scopes if you wire them up. What a team actually needs is knowledge: specific, trustworthy, and shared without anyone writing integration code. Firmament is the product that turns what your agents learn into governed knowledge every agent can use.
We're building our own agent. Should we use Mem0?
Quite possibly. If you are a developer assembling memory into a product you ship, Mem0's SDK and platform are built for that, and being open source you can run it yourself. Firmament is for the other situation: a company running agents it didn't build, that want shared, verified knowledge without becoming memory engineers.
Doesn't Mem0 already do shared, multi-agent memory?
It can, if you build it. Mem0 has user, agent, and organization scopes you configure in code. Firmament is where that sharing is the product, not a setting: one agent learns, a human approves, and every agent on the team has it, with no scopes to wire up and a record of what actually worked.
What does Firmament add on top of a memory layer?
Judgement and governance. A memory layer stores and recalls what you give it. Firmament decides what is worth keeping, reinforces what keeps working and retires what breaks, and requires a human to approve knowledge before it spreads. The knowledge carries a track record, not just a timestamp.
In fairness
When Mem0 is the right call
If you are building an agent or app yourself and want a memory layer you control in code, open source and self-hostable across any LLM, Mem0 is built for exactly that. Firmament is for companies running agents they didn't build, that want shared, verified knowledge as a product, not a library to assemble.
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