--- title: "datalevin vs helix-db" type: "comparison" canonical_url: "https://www.graphcanon.com/compare/datalevin-datalevin-vs-helixdb-helix-db" tools: ["datalevin-datalevin", "helixdb-helix-db"] --- # datalevin vs helix-db Neutral, constraint-first comparison with live GitHub stats. | | [datalevin](/tools/datalevin-datalevin.md) | [helix-db](/tools/helixdb-helix-db.md) | | --- | --- | --- | | Tagline | A simple, fast and versatile Datalog database | HelixDB is an OLTP graph-vector database built in Rust on Object Storage | | Stars | 1,437 | 5,592 | | Forks | 82 | 310 | | Open issues | 27 | 10 | | Language | Clojure | Rust | | Adopt for | Datalevin is suited for applications needing the simplicity, speed, and expressiveness of Datalog with straightforward ACID compliance. Its cost-based query optimizer offers competitive performance against SQL RDBMS and献 | HelixDB is an OLTP graph-vector database built in Rust on Object Storage, targeting AI applications by supporting various data models within a single platform. It provides federated access to company data for memory and侃 | | Persona | - | - | | Runtime | - | - | | License | Datalevin is available under the EPL-2.0 license, meaning it provides a strong open-source licensing framework suitable for both commercial and custom purposes, with conditions on attribution, copy of | Apache-2.0 | | Categories | Vector Databases | Data & Retrieval, Vector Databases | ## Trust and health _Sourced signals - not a safety guarantee. No winner column._ | | [datalevin](/tools/datalevin-datalevin.md) | [helix-db](/tools/helixdb-helix-db.md) | | --- | --- | --- | | Days since push | 0d | 2d | | Open issues (now) | 27 | 10 | | Full report | [trust report](/tools/datalevin-datalevin/trust.md) | [trust report](/tools/helixdb-helix-db/trust.md) | **Typed relationship:** datalevin _(alternative)_ helix-db HelixDB is also a graph-vector database like Datalevin but implemented in Rust, serving similar purposes with different technical strategies. ## Decision facts: datalevin - **Pricing:** freemium - **Requirements:** Min 1 GB RAM - **Adopt for:** Datalevin is suited for applications needing the simplicity, speed, and expressiveness of Datalog with straightforward ACID compliance. Its cost-based query optimizer offers competitive performance against SQL RDBMS and献 - **License detail:** Datalevin is available under the EPL-2.0 license, meaning it provides a strong open-source licensing framework suitable for both commercial and custom purposes, with conditions on attribution, copy of ## Decision facts: helix-db - **Adopt for:** HelixDB is an OLTP graph-vector database built in Rust on Object Storage, targeting AI applications by supporting various data models within a single platform. It provides federated access to company data for memory and侃 ## Choose when ### Choose datalevin if… - datalevin is primarily Clojure; helix-db is Rust. - License: datalevin is EPL-2.0, helix-db is Apache-2.0. - Requirements: Min 1 GB RAM. - HelixDB is also a graph-vector database like Datalevin but implemented in Rust, serving similar purposes with different technical strategies. - Tags unique to datalevin: embedded-database, vector-database, ai-native, key-value-store. - When you need a simple yet durable Datalog database with direct updates and deletions without complex temporal handling. ### Choose helix-db if… - helix-db is primarily Rust; datalevin is Clojure. - License: helix-db is Apache-2.0, datalevin is EPL-2.0. - HelixDB is also a graph-vector database like Datalevin but implemented in Rust, serving similar purposes with different technical strategies. - Tags unique to helix-db: ai, rust, rag, helixdb. - Also covers Data & Retrieval. - When you need a unified database solution that supports multiple data models (graph, vector, KV, documents) for building AI applications ## When NOT to use datalevin - When working in environments strictly requiring SQL-based relational database systems and familiarity with complex temporal handling similar to Datomic®. - If you need extended transactional semantics such as those offered by Datomic®, which includes more intricate time-based operations. - In cases where the overhead of embedding a Datalog engine for less critical query performance is not justified. ## When NOT to use helix-db - If your application does not require or benefit from a multifunctional data model, preferring simpler databases that specialize in one type of storage - Not recommended if you are locked into frameworks or ecosystems that do not support Rust-based solutions or Require specific database features outside HelixDB's scope - Avoid if project constraints necessitate the use of established relational databases with extensive ecosystem support ## Common questions ### What is the difference between datalevin and helix-db? datalevin: A simple, fast and versatile Datalog database. helix-db: HelixDB is an OLTP graph-vector database built in Rust on Object Storage. See the comparison table for live GitHub stats and shared categories. ### When should I choose datalevin over helix-db? Choose datalevin over helix-db when datalevin is primarily Clojure; helix-db is Rust; License: datalevin is EPL-2.0, helix-db is Apache-2.0; Requirements: Min 1 GB RAM; HelixDB is also a graph-vector database like Datalevin but implemented in Rust, serving similar purposes with different technical strategies; Tags unique to datalevin: embedded-database, vector-database, ai-native, key-value-store; When you need a simple yet durable Datalog database with direct updates and deletions without complex temporal handling. ### When should I choose helix-db over datalevin? Choose helix-db over datalevin when helix-db is primarily Rust; datalevin is Clojure; License: helix-db is Apache-2.0, datalevin is EPL-2.0; HelixDB is also a graph-vector database like Datalevin but implemented in Rust, serving similar purposes with different technical strategies; Tags unique to helix-db: ai, rust, rag, helixdb; Also covers Data & Retrieval; When you need a unified database solution that supports multiple data models (graph, vector, KV, documents) for building AI applications. ### When should I avoid datalevin? When working in environments strictly requiring SQL-based relational database systems and familiarity with complex temporal handling similar to Datomic®. If you need extended transactional semantics such as those offered by Datomic®, which includes more intricate time-based operations. In cases where the overhead of embedding a Datalog engine for less critical query performance is not justified. ### When should I avoid helix-db? If your application does not require or benefit from a multifunctional data model, preferring simpler databases that specialize in one type of storage Not recommended if you are locked into frameworks or ecosystems that do not support Rust-based solutions or Require specific database features outside HelixDB's scope Avoid if project constraints necessitate the use of established relational databases with extensive ecosystem support ### Is datalevin or helix-db more popular on GitHub? helix-db has more GitHub stars (5,592 vs 1,437). Stars measure visibility, not whether either tool fits your constraints. ### Are datalevin and helix-db open source? Yes - both are open-source projects on GitHub (datalevin: EPL-2.0, helix-db: Apache-2.0). ### Where can I find alternatives to datalevin or helix-db? GraphCanon lists graph-backed alternatives at /tools/datalevin-datalevin/alternatives and /tools/helixdb-helix-db/alternatives (/tools/datalevin-datalevin/alternatives.md, /tools/helixdb-helix-db/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 /compare/datalevin-datalevin-vs-helixdb-helix-db.md mirrors this page for agents and LLM crawlers, with the same stats table and FAQ answers. ### Which is better maintained, datalevin or helix-db? datalevin: Very active. helix-db: 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 datalevin and helix-db? GraphCanon publishes per-repo trust reports with dated maintenance, provenance, and scan summaries: datalevin: /tools/datalevin-datalevin/trust; helix-db: /tools/helixdb-helix-db/trust. --- **Machine-readable endpoints** - JSON: [`/api/graphcanon/graph?tool=datalevin-datalevin`](/api/graphcanon/graph?tool=datalevin-datalevin) - 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/_