Updated May 21, 2026 · Independent Analysis
Milvus / Zilliz Cloud vs Redis Vector Store
Capability Overview
Milvus / Zilliz Cloudvs Redis Vector Store
4.4G2
Only in Milvus / Zilliz Cloud
- ✦ Open Source (Apache 2.0)
- ✦ Distributed Architecture
- ✦ Billion-Scale Vectors
✓ Free plan5k+ users · est. 2017
Redis Vector Storevs Milvus / Zilliz Cloud
4.4G2
Only in Redis Vector Store
- ✦ HNSW vector index
- ✦ FLAT (exact) vector index
- ✦ Hybrid search (vector + filter)
✓ Free planFrom $7/moN/A users · est.
Real-World Scenarios: When to Choose Which
The question that matters: “In what situation will I regret choosing A over B after 3 months?”
Scenario: Trillion-Scale Vector Search via Zilliz
Milvus / Zilliz Cloud
Trillion-Scale Vector Search via Zilliz Cloud
Milvus scales to trillions of vectors using hierarchical index structures with tiered storage, serving billion-scale collections that exceed single-machine memory limits via Zilliz Cloud managed deployment.
Redis Vector Store
Real-time Semantic Search
Add vector search to an existing Redis deployment for product recommendations with sub-millisecond response times
Milvus / Zilliz Cloud Unique Strength
GPU-Accelerated Index Building for Large Collections
Milvus GPU indexing builds IVFPQ indexes on billion-vector collections 10x faster than CPU-only builds, reducing the time from ingestion to searchable index for large-scale embedding pipelines.
→ Choose Milvus / Zilliz Cloud if this scenario applies to you. Redis Vector Store doesn't offer a comparable solution.
Milvus / Zilliz Cloud Unique Strength
Dynamic Schema and Partition Management for Multi-Tenant Apps
Milvus partitions split a collection by tenant key, improving query isolation and allowing partition-level operations like load/release to balance memory usage across a shared cluster.
→ Choose Milvus / Zilliz Cloud if this scenario applies to you. Redis Vector Store doesn't offer a comparable solution.
Redis Vector Store Unique Strength
Chat History Retrieval
Store conversation embeddings in Redis and retrieve semantically similar past interactions for context-aware chatbot responses
→ Choose Redis Vector Store if this scenario applies to you. Milvus / Zilliz Cloud doesn't offer a comparable solution.
Redis Vector Store Unique Strength
Fraud Detection
Compare transaction embeddings against known fraud patterns in real-time at low latency to flag suspicious activity during checkout
→ Choose Redis Vector Store if this scenario applies to you. Milvus / Zilliz Cloud doesn't offer a comparable solution.
Redis Vector Store Unique Strength
Unified Cache and Vector Store
Combine Redis caching and vector search in one database, reducing infrastructure complexity for recommendation APIs
→ Choose Redis Vector Store if this scenario applies to you. Milvus / Zilliz Cloud doesn't offer a comparable solution.
Pricing IntelligenceMedium confidence
Milvus / Zilliz Cloud Plans
Free tier available
Milvus Open Source0
Open Source
- • Apache 2.0 open-source license
- • Self-hosted deployment via Docker or Kubernetes
- • Support for 10+ vector index types (HNSW, IVF, etc.)
Zilliz Cloud Free0
Free
- • 1 active serverless cluster
- • Up to 2 vector collections
- • Up to 1 million vector storage limit
Zilliz Cloud Serverless
Custom
- • Pay-as-you-go pricing (from $0.10/CU-hr)
- • Auto-scaling compute and storage
- • No minimum monthly commitment
Zilliz Cloud Enterprise
Custom
- • Dedicated cluster deployments
- • VPC peering and AWS PrivateLink / Azure Private Link
- • 99.99% uptime SLA
Redis Vector Store Plans
Free tier available
Redis Stack (Self-Hosted)0
Free
- • Self-hosted deployment
- • Vector search (HNSW and Flat indexes)
- • Distance metrics (Cosine, L2, Inner Product)
Redis Cloud Free0
Free
- • 30MB storage limit
- • 1 Redis database
- • Vector search capabilities
Redis Cloud FixedBest Value
$7/mo
- • Storage limits from 100MB up to 5GB
- • Dedicated databases
- • Vector search and real-time indexing
Redis Cloud Flexible / Enterprise
Custom
- • Custom storage limits (TB+ scale)
- • Active-Active multi-region replication
- • 99.999% high availability SLA
Feature Matrix
4 differences found across 14 standardized features
Feature
Milvus / Zilliz Cloud
Redis Vector Store
Sparse Vectors
✓
✗
GPU Acceleration
✓
✗
Filtering
✓
✗
Disk-based Index
✓
✗
Total (raw)
16
14
Milvus / Zilliz Cloud Features
- •Open Source (Apache 2.0)
- •Distributed Architecture
- •Billion-Scale Vectors
- •ANNS Algorithms (HNSW, IVF, DiskANN)
- •Hybrid Search
- •GPU Acceleration
- •Multi-vector Search
- •Sparse Vector Support
- •Metadata Filtering
- •Data Partitioning
- •Incremental Indexing
- •Python/Java/Go SDKs
- •Kubernetes Native
- •LangChain Integration
- •Time Travel (data versioning)
- •RBAC
Redis Vector Store Features
- •HNSW vector index
- •FLAT (exact) vector index
- •Hybrid search (vector + filter)
- •In-memory storage
- •Sub-millisecond latency
- •Redis Cloud managed service
- •Python/Node.js/Java SDKs
- •LangChain/LlamaIndex integration
- •Horizontal scaling via Redis Cluster
- •RDB and AOF persistence
- •Multi-tenancy via keyspaces
- •REST API (Redis Cloud)
- •Vector distance metrics (L2, IP, Cosine)
- •Metadata filtering
Pros & Cons Face-Off
Evaluative strengths and weaknesses: not feature lists
Pros
- +CNCF project: battle-tested for billion-scale workloads
- +GPU acceleration and DiskANN for cost-efficient large-scale search
- +Distributed architecture with independent storage/compute scaling
- +Multi-vector search supports complex AI use cases
Cons
- −Operational complexity: requires Kubernetes expertise for self-hosted
- −Overkill for small-scale RAG applications
Pros
- +Sub-millisecond vector search latency for applications already using Redis
- +No new database to manage if Redis is already in your stack
- +HNSW index delivers high recall with low query latency at moderate scale
Cons
- −There are some points where I feel Redis can be improved.
- −There are a few areas where Redis could improve.
- −Redis could improve its efficiency in handling locally stored data, not just Amazon Cloud or Google Cloud.
- −Redis presents a single point of failure and lacks fault tolerance.
- −The product's main purpose is caching, even though the vendor says we can also use it as a persistent database.
At a Glance
User Rating
4.4/5vs4.4/5
Milvus / Zilliz Cloud
Redis Vector Store
Starting Price
Pay-per-usevs$7/mo
Milvus / Zilliz Cloud
Redis Vector Store
▲
Feature Count
16 featuresvs14 features
Milvus / Zilliz Cloud
▲
Redis Vector Store
User Base
5vs0
Milvus / Zilliz Cloud
▲
Redis Vector Store
Price & Data Intelligence SyncLast verified: May 14, 2026 · CE-DB-2026W21-F22756 · ✓ Pricing updated May 21, 2026
Frequently Asked Questions
Related Comparisons
Sources & Data Trail · Milvus / Zilliz Cloud
- 1.Official Pricing Page·Source of verified tiers(Checked: 2026-05-14)
- 2.Official Website·Official vendor website
- 3.G2·G2 verified reviews · 4.4/5
Sources & Data Trail · Redis Vector Store
- 1.Official Pricing Page·Source of verified tiers(Checked: 2026-05-14)
- 2.Official Website·Official vendor website
- 3.G2·G2 verified reviews · 4.4/5
- 4.TrustRadius·TrustRadius verified reviews
- 5.PeerSpot·PeerSpot enterprise peer reviews