head to head · open source
Milvus vs sonic
Milvus has 46,166 GitHub stars, 4,257 forks, 1,405 open issues and last shipped today. sonic has 21,345 stars, 618 forks, 63 open issues and last shipped 5 days ago. Milvus leads on adoption by 116% (46,166 vs 21,345 stars). Milvus is written in Go under Apache-2.0; sonic is written in Rust under MPL-2.0. Milvus has attracted 9% as many forks as stars, sonic 3%. Milvus was the more recently maintained of the two, and both are self-hostable with no licence fee.
Two open source projects, one decision. Both are free and self-hostable — the differences are community size, license terms, language stack and release pace.
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Side by side
| Milvus | sonic | |
|---|---|---|
| GitHub stars | ★ 46K | ★ 21K |
| License | Apache-2.0 | MPL-2.0 |
| Written in | Go | Rust |
| Last push | 2026-09-20 | 2026-09-15 |
| Forks | ⑂ 4.3K | ⑂ 618 |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick Milvus if
- You weight community size — 46K stars and counting
- You want the Apache-2.0 license terms
- Your stack matches Go
- You value the larger contributor base for long-term maintenance
pick sonic if
- You want the sonic feature set and don't need the biggest community
- You prefer the MPL-2.0 license terms
- Your stack matches Rust
- You evaluated both and sonic fits your workflow better
About Milvus
Milvus is a high performance, cloud native vector database written in Go and C++, designed to power AI applications by efficiently storing, indexing, and searching large scale unstructured data such as text, images, and multi modal embeddings. It implements hardware accelerated approximate nearest neighbor (ANN) search using algorithms like HNSW, FAISS, and DiskANN, and supports both real time streaming updates and batch ingestion. Milvus lives in the GenAI infrastructure ecosystem, serving as the persistent storage and retrieval layer for embedding based workloads including RAG, recommendation, and image search.…
read the full Milvus overview →
About sonic
Sonic is a fast, lightweight, schema less search backend written in Rust and licensed under MPL 2.0, built for developers and platform teams who need search relevance, typo tolerance, and auto completion without the resource cost of a full document oriented search engine.
read the full sonic overview →
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Frequently asked questions
Is Milvus or sonic more popular?
Milvus has 46,166 GitHub stars and sonic has 21,345. Milvus has the larger community by that measure.
Are Milvus and sonic free?
Both are open source. Milvus is licensed under Apache-2.0 and sonic under MPL-2.0. Neither carries a licence fee.
What is the difference between Milvus and sonic?
Milvus is written in Go and sonic in Rust. The practical differences are community size, licence terms, language stack and release cadence — all compared in the table above.
Which should I choose, Milvus or sonic?
Choose Milvus if you want the larger community (46,166 stars) or its Apache-2.0 licence terms. Choose sonic if its feature set, stack or MPL-2.0 licence fits better. Both are self-hostable.