--- title: "chroma vs omnigraph" type: "comparison" canonical_url: "https://www.graphcanon.com/compare/chroma-core-chroma-vs-modernrelay-omnigraph" tools: ["chroma-core-chroma", "modernrelay-omnigraph"] --- # chroma vs omnigraph *GraphCanon updated Sep 20, 2026* ## Verdict Pick chroma if chroma is an open-source data infrastructure for AI, offering vector, hybrid, and full-text search capabilities. It supports multiple programming languages and provides a simple API for managing collections and querying; pick omnigraph if omnigraph is a graph engine designed for lakehouse environments, featuring git-style workflows for managing graph data. It supports operations on knowledge graphs and graph. [chroma](https://www.trychroma.com/) reports 29k GitHub stars, 2.5k forks, and 864 open issues, last pushed Sep 17, 2026. [omnigraph](https://omnigraph.dev) has 1.1k stars, 250 forks, and 56 open issues, last pushed Sep 17, 2026. Figures are from public GitHub metadata via [chroma's repository](https://github.com/chroma-core/chroma) and [omnigraph's repository](https://github.com/ModernRelay/omnigraph). | | [chroma](/tools/chroma-core-chroma.md) | [omnigraph](/tools/modernrelay-omnigraph.md) | | --- | --- | --- | | Tagline | Search infrastructure for AI | Lakehouse native graph engine with git-style workflows | | Stars | 29,320 | 1,136 | | Forks | 2,516 | 250 | | Open issues | 864 | 56 | | Language | Rust | Rust | | Adopt for | Chroma is an open-source data infrastructure for AI, offering vector, hybrid, and full-text search capabilities. It supports multiple programming languages and provides a simple API for managing collections and querying. | Omnigraph is a graph engine designed for lakehouse environments, featuring git-style workflows for managing graph data. It supports operations on knowledge graphs and graph databases, and integrates with technologies, as | | Persona | - | - | | Runtime | - | - | | License | Chroma is licensed under the Apache-2.0 license, which is a permissive free software license. | MIT | | Categories | Data & Retrieval, Vector Databases | Data & Retrieval | ## Trust and health _Sourced signals - not a safety guarantee. No winner column._ | | [chroma](/tools/chroma-core-chroma.md) | [omnigraph](/tools/modernrelay-omnigraph.md) | | --- | --- | --- | | Open issues (now) | 864 | 56 | | Stars delta | +422 (30d) | +96 (30d) | | Open issues delta | +118 (30d) | +39 (30d) | | Full report | [trust report](/tools/chroma-core-chroma/trust.md) | [trust report](/tools/modernrelay-omnigraph/trust.md) | ## Decision facts: chroma - **Pricing:** freemium - Chroma is open-source and free to use, but it also offers a hosted service called Chroma Cloud, which is cost-effective and scalable, with $5 of free credits available. - **Requirements:** Min 1 GB RAM; Chroma can be installed via pip for Python and npm for JavaScript.; For client-server mode, you can run Chroma with a specified path for the database. - **Adopt for:** Chroma is an open-source data infrastructure for AI, offering vector, hybrid, and full-text search capabilities. It supports multiple programming languages and provides a simple API for managing collections and querying. - **License detail:** Chroma is licensed under the Apache-2.0 license, which is a permissive free software license. ## Decision facts: omnigraph - **Adopt for:** Omnigraph is a graph engine designed for lakehouse environments, featuring git-style workflows for managing graph data. It supports operations on knowledge graphs and graph databases, and integrates with technologies, as ## Choose when ### Choose chroma if… - License: chroma is Apache-2.0, omnigraph is MIT. - Pricing: Chroma is open-source and free to use, but it also offers a hosted service called Chroma Cloud, which is cost-effective and scalable, with $5 of free credits available.. - Requirements: Min 1 GB RAM; Chroma can be installed via pip for Python and npm for JavaScript.; For client-server mode, you can run Chroma with a specified path for the database.. - Tags unique to chroma: agents, ai, ai-agents, database. - Also covers Vector Databases. - When you need a simple and efficient API for creating collections, adding documents, and querying data with vector, hybrid, and full-text search capabilities. ### Choose omnigraph if… - License: omnigraph is MIT, chroma is Apache-2.0. - Tags unique to omnigraph: apache-arrow, context-graph, datafusion, graph-database. - When you need a graph engine that integrates seamlessly with lakehouse environments, such as those using Apache Arrow, DataFusion, and S3. ## When NOT to use chroma - If you need a solution that is tightly integrated with a specific database system that Chroma does not support or integrate with. - When you require a more complex or specialized search infrastructure that offers features beyond vector, hybrid, and full-text search. - If you are working in an environment where Rust is not a preferred language, and you need a tool that is more aligned with your existing tech stack. - When you need a solution that is not open-source and prefer proprietary software with dedicated support and features. ## When NOT to use omnigraph - If your project does not require integration with lakehouse technologies like Apache Arrow, DataFusion, or S3, Omnigraph might not be the best fit. - If your team is not familiar with Rust or prefers a different programming language, Omnigraph's Rust foundation might pose a learning curve or preference mismatch. - For projects that do not benefit from git-style workflows for graph data management, Omnigraph's unique approach might add unnecessary complexity. ## Common questions ### What is the difference between chroma and omnigraph? chroma: Search infrastructure for AI. omnigraph: Lakehouse native graph engine with git-style workflows. See the comparison table for live GitHub stats and shared categories. ### When should I choose chroma over omnigraph? Choose chroma over omnigraph when License: chroma is Apache-2.0, omnigraph is MIT; Pricing: Chroma is open-source and free to use, but it also offers a hosted service called Chroma Cloud, which is cost-effective and scalable, with $5 of free credits available.; Requirements: Min 1 GB RAM; Chroma can be installed via pip for Python and npm for JavaScript.; For client-server mode, you can run Chroma with a specified path for the database.; Tags unique to chroma: agents, ai, ai-agents, database; Also covers Vector Databases; When you need a simple and efficient API for creating collections, adding documents, and querying data with vector, hybrid, and full-text search capabilities. ### When should I choose omnigraph over chroma? Choose omnigraph over chroma when License: omnigraph is MIT, chroma is Apache-2.0; Tags unique to omnigraph: apache-arrow, context-graph, datafusion, graph-database; When you need a graph engine that integrates seamlessly with lakehouse environments, such as those using Apache Arrow, DataFusion, and S3. ### When should I avoid chroma? If you need a solution that is tightly integrated with a specific database system that Chroma does not support or integrate with. When you require a more complex or specialized search infrastructure that offers features beyond vector, hybrid, and full-text search. If you are working in an environment where Rust is not a preferred language, and you need a tool that is more aligned with your existing tech stack. When you need a solution that is not open-source and prefer proprietary software with dedicated support and features. ### When should I avoid omnigraph? If your project does not require integration with lakehouse technologies like Apache Arrow, DataFusion, or S3, Omnigraph might not be the best fit. If your team is not familiar with Rust or prefers a different programming language, Omnigraph's Rust foundation might pose a learning curve or preference mismatch. For projects that do not benefit from git-style workflows for graph data management, Omnigraph's unique approach might add unnecessary complexity. ### Is chroma or omnigraph more popular on GitHub? chroma has more GitHub stars (29,320 vs 1,136). Stars measure visibility, not whether either tool fits your constraints. ### Are chroma and omnigraph open source? Yes - both are open-source projects on GitHub (chroma: Apache-2.0, omnigraph: MIT). ### Where can I find alternatives to chroma or omnigraph? GraphCanon lists graph-backed alternatives at [chroma alternatives](/tools/chroma-core-chroma/alternatives) and [omnigraph alternatives](/tools/modernrelay-omnigraph/alternatives) ([chroma markdown twin](/tools/chroma-core-chroma/alternatives.md), [omnigraph markdown twin](/tools/modernrelay-omnigraph/alternatives.md)), ranked by typed relationship edges rather than popularity votes. ### Is there a machine-readable version of this comparison? Yes. The markdown twin at [this comparison](/compare/chroma-core-chroma-vs-modernrelay-omnigraph.md) mirrors this page for agents and LLM crawlers, with the same stats table and FAQ answers. ### Which is better maintained, chroma or omnigraph? chroma: Very active. omnigraph: Very active. Compare maintenance labels, days since push, and release cadence in the trust section below - stars alone do not measure maintenance. ### Where are the full trust reports for chroma and omnigraph? GraphCanon publishes per-repo trust reports with dated maintenance, provenance, and scan summaries: [chroma trust report](/tools/chroma-core-chroma/trust); [omnigraph trust report](/tools/modernrelay-omnigraph/trust). --- **Machine-readable endpoints** - JSON: [`/api/graphcanon/graph?tool=chroma-core-chroma`](/api/graphcanon/graph?tool=chroma-core-chroma) - LLM index: [/llms.txt](/llms.txt) - Full corpus: [/llms-full.txt](/llms-full.txt) _GraphCanon - The knowledge graph for AI development. https://www.graphcanon.com/_