Chroma vs Cognee
A side-by-side comparison of two self-hosted self-hosted ai options — licensing, setup difficulty, resource needs, and what each one replaces.
| Feature | Chroma | Cognee |
|---|---|---|
| Deploy effort | Under-an-hour setup | Under-an-hour setup |
| Health score | 96 · Excellent | 98 · Excellent |
| Category | Self-Hosted AI | Self-Hosted AI |
| License | Apache-2.0 | Apache-2.0 |
| Language | Rust | Python |
| Setup difficulty | Easy | Medium |
| Min. RAM | 1,024 MB | 2,048 MB |
| Deployment | docker, bare-metal, binary | docker, source |
| GitHub stars | ★ 29,356 | ★ 30,928 |
| First released | 2022 | 2023 |
| Replaces | Pinecone | Mem0, Pinecone |
What are Chroma and Cognee?
Chroma
Chroma is an open-source vector database designed for building AI applications with embeddings. It stores documents and their embeddings and provides fast similarity search for retrieval-augmented generation.
- Embedded or client-server modes
- Fast similarity search
- Simple Python API
- Metadata filtering
Cognee
Cognee is an open-source framework that builds dynamic knowledge graphs to give AI agents persistent memory. It ingests documents and conversations and can run fully self-hosted with local vector and graph stores.
- Knowledge graph memory
- Document ingestion pipeline
- Pluggable vector stores
- Agent memory layer
Chroma vs Cognee: key differences
Chroma is written in Rust, while Cognee is built with Python. Chroma is the lighter option, starting around 1,024 MB of RAM against 2,048 MB for Cognee.
Why pick each one
Choose Chroma if…
- Dead simple API
- Runs embedded or server
- Great for prototyping
Watch out for
- Not built for huge scale
- Fewer enterprise features
Choose Cognee if…
- Knowledge graph memory
- Multiple store backends
- Developer-friendly API
Watch out for
- Rapidly evolving APIs
- Stack has many parts
Frequently asked questions
Is Chroma or Cognee better?
Neither is universally better. Cognee has the larger community, while Chroma is simpler to set up (easy difficulty). Choose based on the comparison table above and your own setup.
Are Chroma and Cognee free and open-source?
Yes. Chroma is licensed under Apache-2.0 and Cognee under Apache-2.0. Both can be self-hosted at no software cost.
Can I run Chroma and Cognee with Docker?
Chroma: yes. Cognee: yes.
Which is lighter on resources, Chroma or Cognee?
Chroma has the smaller minimum footprint at 1,024 MB of RAM, compared to about 2,048 MB for Cognee. Real-world usage depends on library size, user count, and enabled features.