What is LanceDB?
LanceDB is a multimodal lakehouse for AI teams that provides one data layer for curation, feature engineering, search and retrieval, and model training. Built on the open-source Lance lakehouse format designed for multimodal AI data.
What LanceDB does
The capabilities that matter for vector databases, normalised so it lines up with every alternative. “-” means we haven't confirmed it, not that it's missing.
- Deployment
- Embedded
- Serverless / consumption pricing
- -
- ANN index (HNSW / IVF / DiskANN / ScaNN / flat)
- IVF, IVF_RQ
- Distance metrics (cosine / dot / Euclidean)
- -
- Metadata filtering
- Pre-filter
- Hybrid search (dense + sparse fusion)
- ✓
- Built-in BM25 / lexical
- ✓
- Quantization
- Product
- On-disk vs in-memory
- Disk-backed
- Multi-tenancy (namespaces / collections / tenants)
- ✓
- Horizontal scale
- Sharded / distributed
- Consistency
- -
- Licence class
- Permissive OSS
- Purpose-built vs feature-of-parent
- Dedicated DBMS
Platform & deployment
Independently observed- On-premise
- Self-hosted
LanceDB alternatives
Other vector databases we track, ranked by the same independent score.
The Vioscale score: one lens on the evidence
Not user reviews and not a paid placement: a confidence-weighted blend of the independent signals below (adoption, activity, security posture, and more), which you can sort and re-weight yourself. Vendors can correct their listing but can never move their rank, and stars are weighted low as a vanity metric. It is one way to read the evidence for LanceDB, not the verdict.
| Signal | Score | Weight | Contribution | Evidence |
|---|---|---|---|---|
| Github Activity | 62 | 0.15 | 9.5 | ✓ |
| Security Posture | 60 | 0.14 | 8.2 | ✓ |
| Capabilities | 58 | 0.13 | 7.5 | ✓ |
| Github Stars | 76 | 0.05 | 4.0 | ✓ |
| Package Downloads | 79 | 0.04 | 3.5 | ✓ |
| Price Level | 0 | 0.04 | 0.0 | - |
| Reliability | 0 | 0.08 | 0.0 | - |
| Integrations | 0 | 0.06 | 0.0 | - |
| Release Cadence | 0 | 0.09 | 0.0 | - |
| Pricing Transparency | 0 | 0.06 | 0.0 | - |
| Stackoverflow Activity | 0 | 0.15 | 0.0 | - |
Computed . Re-weight it by intent, or see the full method.
All data & sourcesshow ↓
Every value we hold, with its source, retrieval date, and confidence. This is the evidence behind the score: don't trust it, verify it.
Activity
| Attribute | Value | Evidence |
|---|---|---|
| Commits last 30d | 95 | mediumsource · 2026-07-31 · 65% |
Adoption
Features
| Attribute | Value | Evidence |
|---|---|---|
| Capabilities | {"ann_index":"IVF, IVF_RQ","deployment":"embedded","quantization":"product","storage_tier":"disk_backed","hybrid_search":true,"licence_class":"permissive_oss","multi_tenancy":true,"product_class":"dedicated_dbms","full_text_bm25":true,"horizontal_scale":"sharded_distributed","metadata_filtering":"pre_filter"} | mediumsource · 2026-08-05 · 60% |
Language
| Attribute | Value | Evidence |
|---|---|---|
| Primary | Rust | highsource · 2026-07-31 · 90% |
License
| Attribute | Value | Evidence |
|---|---|---|
| Spdx | Apache-2.0 | highsource · 2026-07-31 · 99% |
Pricing
| Attribute | Value | Evidence |
|---|---|---|
| Model | commercial | mediumsource · 2026-08-05 · 70% |