--- title: "jax vs rembo" type: "comparison" canonical_url: "https://www.graphcanon.com/compare/jax-ml-jax-vs-ziyuw-rembo" tools: ["jax-ml-jax", "ziyuw-rembo"] --- # jax vs rembo *GraphCanon updated Jul 11, 2026* ## Verdict Pick jax when jax is primarily Python; rembo is Matlab; pick rembo when rembo is primarily Matlab; jax is Python. [jax](https://docs.jax.dev) reports 36k GitHub stars, 3.7k forks, and 2.5k open issues, last pushed Jul 11, 2026. [rembo](https://github.com/ziyuw/rembo) has 117 stars, 25 forks, and 3 open issues, last pushed Aug 4, 2013. Figures are from public GitHub metadata via [jax's repository](https://github.com/jax-ml/jax) and [rembo's repository](https://github.com/ziyuw/rembo). | | [jax](/tools/jax-ml-jax.md) | [rembo](/tools/ziyuw-rembo.md) | | --- | --- | --- | | Tagline | Composable transformations of Python+NumPy programs: differentiate, vectorize, JIT to GPU/TPU, and more | Bayesian optimization in high-dimensions via random embedding. | | Stars | 35,999 | 117 | | Forks | 3,676 | 25 | | Open issues | 2,495 | 3 | | Language | Python | Matlab | | Adopt for | - | - | | Persona | - | - | | Runtime | - | - | | License | Apache-2.0 | - | | Categories | Computer Vision, Evaluation & Observability, Vector Databases | Evaluation & Observability, Vector Databases | ## Trust and health _Sourced signals - not a safety guarantee. No winner column._ | | [jax](/tools/jax-ml-jax.md) | [rembo](/tools/ziyuw-rembo.md) | | --- | --- | --- | | Maintenance | Very active (96%) | Dormant (18%) | | Days since push | 0d | 4724d | | Open issues (now) | 2.5k | 3 | | Owner type | Organization | User | | Full report | [trust report](/tools/jax-ml-jax/trust.md) | [trust report](/tools/ziyuw-rembo/trust.md) | ## Choose when ### Choose jax if… - jax is primarily Python; rembo is Matlab. - Tags unique to jax: jax, python. - Also covers Computer Vision. ### Choose rembo if… - rembo is primarily Matlab; jax is Python. - Tags unique to rembo: matlab. - Leaner open-issue backlog (3). ## When NOT to use jax - Evaluation & Observability: Defer heavyweight eval infra only until you have real traffic - never skip it once users depend on answers. - 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 rembo - Last GitHub push was 4724 days ago (dormant maintenance, Aug 4, 2013). Validate activity before betting a new project on rembo. - Evaluation & Observability: Defer heavyweight eval infra only until you have real traffic - never skip it once users depend on answers. - Vector Databases: Don't reach for a dedicated vector DB under ~100k vectors; pgvector on your existing Postgres is simpler to operate. ## Common questions ### What is the difference between jax and rembo? jax: Composable transformations of Python+NumPy programs: differentiate, vectorize, JIT to GPU/TPU, and more. rembo: Bayesian optimization in high-dimensions via random embedding.. See the comparison table for live GitHub stats and shared categories. ### When should I choose jax over rembo? Choose jax over rembo when jax is primarily Python; rembo is Matlab; Tags unique to jax: jax, python; Also covers Computer Vision. ### When should I choose rembo over jax? Choose rembo over jax when rembo is primarily Matlab; jax is Python; Tags unique to rembo: matlab; Leaner open-issue backlog (3). ### When should I avoid jax? Evaluation & Observability: Defer heavyweight eval infra only until you have real traffic - never skip it once users depend on answers. 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 rembo? Last GitHub push was 4724 days ago (dormant maintenance, Aug 4, 2013). Validate activity before betting a new project on rembo. Evaluation & Observability: Defer heavyweight eval infra only until you have real traffic - never skip it once users depend on answers. Vector Databases: Don't reach for a dedicated vector DB under ~100k vectors; pgvector on your existing Postgres is simpler to operate. ### Is jax or rembo more popular on GitHub? jax has more GitHub stars (35,999 vs 117). Stars measure visibility, not whether either tool fits your constraints. ### Are jax and rembo open source? Yes - both are open-source projects on GitHub. ### Where can I find alternatives to jax or rembo? GraphCanon lists graph-backed alternatives at [jax alternatives](/tools/jax-ml-jax/alternatives) and [rembo alternatives](/tools/ziyuw-rembo/alternatives) ([jax markdown twin](/tools/jax-ml-jax/alternatives.md), [rembo markdown twin](/tools/ziyuw-rembo/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/jax-ml-jax-vs-ziyuw-rembo.md) mirrors this page for agents and LLM crawlers, with the same stats table and FAQ answers. ### Which is better maintained, jax or rembo? jax: Very active. rembo: Dormant. 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 jax and rembo? GraphCanon publishes per-repo trust reports with dated maintenance, provenance, and scan summaries: [jax trust report](/tools/jax-ml-jax/trust); [rembo trust report](/tools/ziyuw-rembo/trust). --- **Machine-readable endpoints** - JSON: [`/api/graphcanon/graph?tool=jax-ml-jax`](/api/graphcanon/graph?tool=jax-ml-jax) - 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/_