--- title: "cuvs vs voy" type: "comparison" canonical_url: "https://www.graphcanon.com/compare/nvidia-cuvs-vs-tantaraio-voy" tools: ["nvidia-cuvs", "tantaraio-voy"] --- # cuvs vs voy *GraphCanon updated Aug 23, 2026* ## Verdict Pick cuvs if cuVS is a CUDA-based library for efficient GPU-accelerated vector search and clustering; pick voy if voy specializes in Webassembly-based vector similarity searches, coded in Rust, with support for k-d-trees and nearest-neighbor searching. [cuvs](https://docs.rapids.ai/api/cuvs/stable/) reports 838 GitHub stars, 223 forks, and 692 open issues, last pushed Aug 22, 2026. [voy](https://www.npmjs.com/package/voy-search) has 1.1k stars, 41 forks, and 22 open issues, last pushed Sep 20, 2023. Figures are from public GitHub metadata via [cuvs's repository](https://github.com/NVIDIA/cuvs) and [voy's repository](https://github.com/tantaraio/voy). | | [cuvs](/tools/nvidia-cuvs.md) | [voy](/tools/tantaraio-voy.md) | | --- | --- | --- | | Tagline | A library for vector search and clustering on the GPU | A WASM vector similarity search written in Rust | | Stars | 838 | 1,069 | | Forks | 223 | 41 | | Open issues | 692 | 22 | | Language | Cuda | Rust | | Adopt for | cuVS is a CUDA-based library for efficient GPU-accelerated vector search and clustering. | Voy specializes in Webassembly-based vector similarity searches, coded in Rust, with support for k-d-trees and nearest-neighbor searching. | | Persona | - | - | | Runtime | - | - | | License | Apache-2.0 | Apache-2.0 | | Categories | Vector Databases | Vector Databases | ## Trust and health _Sourced signals - not a safety guarantee. No winner column._ | | [cuvs](/tools/nvidia-cuvs.md) | [voy](/tools/tantaraio-voy.md) | | --- | --- | --- | | Maintenance | Very active (96%) | Dormant (18%) | | Days since push | 1d | 1067d | | Open issues (now) | 692 | 22 | | Stars delta | +17 (30d) | +4 (30d) | | Open issues delta | +47 (30d) | 0 (30d) | | Full report | [trust report](/tools/nvidia-cuvs/trust.md) | [trust report](/tools/tantaraio-voy/trust.md) | ## Decision facts: cuvs - **Adopt for:** cuVS is a CUDA-based library for efficient GPU-accelerated vector search and clustering. ## Decision facts: voy - **Adopt for:** Voy specializes in Webassembly-based vector similarity searches, coded in Rust, with support for k-d-trees and nearest-neighbor searching. ## Choose when ### Choose cuvs if… - cuvs is primarily Cuda; voy is Rust. - Tags unique to cuvs: anns, clustering, cuda, gpu. - cuvs ships Docker support for self-hosted deployment. - - When you need high-performance vector operations leveraging the parallel processing power of GPUs, specifically with CUDA. ### Choose voy if… - voy is primarily Rust; cuvs is Cuda. - Tags unique to voy: k-d-tree, nearest-neighbor-search, rust, similarity-search. - When you require a Rust implementation of WebAssembly for embedding in web applications or for secure sandboxed execution on the server-side. ## When NOT to use cuvs - - For environments where GPU resources are limited or unavailable because cuVS heavily relies on CUDA's capabilities for performance gains. - - When you prioritize portability across different hardware, as cuVS being tied to CUDA means it may not be optimal on non-NVIDIA GPUs or CPU-only systems. ## When NOT to use voy - If high availability and extensive fault tolerance features are required, as Voy focuses primarily on vector similarity searches rather than system-wide reliability enhancements. - When your project demands integration with existing large-scale SQL database systems, since Voy is specialized for a specific type of search operation. ## Common questions ### What is the difference between cuvs and voy? cuvs: A library for vector search and clustering on the GPU. voy: A WASM vector similarity search written in Rust. See the comparison table for live GitHub stats and shared categories. ### When should I choose cuvs over voy? Choose cuvs over voy when cuvs is primarily Cuda; voy is Rust; Tags unique to cuvs: anns, clustering, cuda, gpu; cuvs ships Docker support for self-hosted deployment; - When you need high-performance vector operations leveraging the parallel processing power of GPUs, specifically with CUDA. ### When should I choose voy over cuvs? Choose voy over cuvs when voy is primarily Rust; cuvs is Cuda; Tags unique to voy: k-d-tree, nearest-neighbor-search, rust, similarity-search; When you require a Rust implementation of WebAssembly for embedding in web applications or for secure sandboxed execution on the server-side. ### When should I avoid cuvs? - For environments where GPU resources are limited or unavailable because cuVS heavily relies on CUDA's capabilities for performance gains. - When you prioritize portability across different hardware, as cuVS being tied to CUDA means it may not be optimal on non-NVIDIA GPUs or CPU-only systems. ### When should I avoid voy? If high availability and extensive fault tolerance features are required, as Voy focuses primarily on vector similarity searches rather than system-wide reliability enhancements. When your project demands integration with existing large-scale SQL database systems, since Voy is specialized for a specific type of search operation. ### Is cuvs or voy more popular on GitHub? voy has more GitHub stars (1,069 vs 838). Stars measure visibility, not whether either tool fits your constraints. ### Are cuvs and voy open source? Yes - both are open-source projects on GitHub (cuvs: Apache-2.0, voy: Apache-2.0). ### Where can I find alternatives to cuvs or voy? GraphCanon lists graph-backed alternatives at [cuvs alternatives](/tools/nvidia-cuvs/alternatives) and [voy alternatives](/tools/tantaraio-voy/alternatives) ([cuvs markdown twin](/tools/nvidia-cuvs/alternatives.md), [voy markdown twin](/tools/tantaraio-voy/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/nvidia-cuvs-vs-tantaraio-voy.md) mirrors this page for agents and LLM crawlers, with the same stats table and FAQ answers. ### Which is better maintained, cuvs or voy? cuvs: Very active. voy: 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 cuvs and voy? GraphCanon publishes per-repo trust reports with dated maintenance, provenance, and scan summaries: [cuvs trust report](/tools/nvidia-cuvs/trust); [voy trust report](/tools/tantaraio-voy/trust). --- **Machine-readable endpoints** - JSON: [`/api/graphcanon/graph?tool=nvidia-cuvs`](/api/graphcanon/graph?tool=nvidia-cuvs) - 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/_