--- title: "hora vs jax" type: "comparison" canonical_url: "https://www.graphcanon.com/compare/hora-search-hora-vs-jax-ml-jax" tools: ["hora-search-hora", "jax-ml-jax"] --- # hora vs jax *GraphCanon updated Jul 11, 2026* ## Verdict Pick hora when hora is primarily Rust; jax is Python; pick jax when jax is primarily Python; hora is Rust. [hora](http://horasearch.com/) reports 2.7k GitHub stars, 78 forks, and 26 open issues, last pushed Feb 17, 2026. [jax](https://docs.jax.dev) has 36k stars, 3.7k forks, and 2.5k open issues, last pushed Jul 11, 2026. Figures are from public GitHub metadata via [hora's repository](https://github.com/hora-search/hora) and [jax's repository](https://github.com/jax-ml/jax). | | [hora](/tools/hora-search-hora.md) | [jax](/tools/jax-ml-jax.md) | | --- | --- | --- | | Tagline | 🚀 efficient approximate nearest neighbor search algorithm collections library written in Rust 🦀 . | Composable transformations of Python+NumPy programs: differentiate, vectorize, JIT to GPU/TPU, and more | | Stars | 2,663 | 35,999 | | Forks | 78 | 3,676 | | Open issues | 26 | 2,495 | | Language | Rust | Python | | Adopt for | - | - | | Persona | - | - | | Runtime | - | - | | License | Apache-2.0 | Apache-2.0 | | Categories | Vector Databases, Computer Vision | Vector Databases, Computer Vision, Evaluation & Observability | ## Trust and health _Sourced signals - not a safety guarantee. No winner column._ | | [hora](/tools/hora-search-hora.md) | [jax](/tools/jax-ml-jax.md) | | --- | --- | --- | | Maintenance | Slowing (36%) | Very active (96%) | | Days since push | 143d | 0d | | Open issues (now) | 26 | 2.5k | | Full report | [trust report](/tools/hora-search-hora/trust.md) | [trust report](/tools/jax-ml-jax/trust.md) | ## Choose when ### Choose hora if… - hora is primarily Rust; jax is Python. - Tags unique to hora: artificial-intelligence, data-structures, algorithm, high-performance. - Leaner open-issue backlog (26). ### Choose jax if… - jax is primarily Python; hora is Rust. - Tags unique to jax: python, jax. - Also covers Evaluation & Observability. ## When NOT to use hora - Last GitHub push was 144 days ago (slowing maintenance, Feb 17, 2026). Validate activity before betting a new project on hora. - Vector Databases: Don't reach for a dedicated vector DB under ~100k vectors; pgvector on your existing Postgres is simpler to operate. ## When NOT to use jax - Vector Databases: Don't reach for a dedicated vector DB under ~100k vectors; pgvector on your existing Postgres is simpler to operate. - Evaluation & Observability: Defer heavyweight eval infra only until you have real traffic - never skip it once users depend on answers. ## Common questions ### What is the difference between hora and jax? hora: 🚀 efficient approximate nearest neighbor search algorithm collections library written in Rust 🦀 .. jax: Composable transformations of Python+NumPy programs: differentiate, vectorize, JIT to GPU/TPU, and more. See the comparison table for live GitHub stats and shared categories. ### When should I choose hora over jax? Choose hora over jax when hora is primarily Rust; jax is Python; Tags unique to hora: artificial-intelligence, data-structures, algorithm, high-performance; Leaner open-issue backlog (26). ### When should I choose jax over hora? Choose jax over hora when jax is primarily Python; hora is Rust; Tags unique to jax: python, jax; Also covers Evaluation & Observability. ### When should I avoid hora? Last GitHub push was 144 days ago (slowing maintenance, Feb 17, 2026). Validate activity before betting a new project on hora. Vector Databases: Don't reach for a dedicated vector DB under ~100k vectors; pgvector on your existing Postgres is simpler to operate. ### When should I avoid jax? Vector Databases: Don't reach for a dedicated vector DB under ~100k vectors; pgvector on your existing Postgres is simpler to operate. Evaluation & Observability: Defer heavyweight eval infra only until you have real traffic - never skip it once users depend on answers. ### Is hora or jax more popular on GitHub? jax has more GitHub stars (35,999 vs 2,663). Stars measure visibility, not whether either tool fits your constraints. ### Are hora and jax open source? Yes - both are open-source projects on GitHub (hora: Apache-2.0, jax: Apache-2.0). ### Where can I find alternatives to hora or jax? GraphCanon lists graph-backed alternatives at [hora alternatives](/tools/hora-search-hora/alternatives) and [jax alternatives](/tools/jax-ml-jax/alternatives) ([hora markdown twin](/tools/hora-search-hora/alternatives.md), [jax markdown twin](/tools/jax-ml-jax/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/hora-search-hora-vs-jax-ml-jax.md) mirrors this page for agents and LLM crawlers, with the same stats table and FAQ answers. ### Which is better maintained, hora or jax? hora: Slowing. jax: 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 hora and jax? GraphCanon publishes per-repo trust reports with dated maintenance, provenance, and scan summaries: [hora trust report](/tools/hora-search-hora/trust); [jax trust report](/tools/jax-ml-jax/trust). --- **Machine-readable endpoints** - JSON: [`/api/graphcanon/graph?tool=hora-search-hora`](/api/graphcanon/graph?tool=hora-search-hora) - 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/_