whichdb
vs

Amazon S3 Vectors vs turbopuffer

Amazon S3 Vectors: Vector storage and similarity queries built into S3, trading latency for very low cost at scale. turbopuffer: Serverless vector and full-text search on object storage, priced for billions of documents.

key differences

  • Amazon S3 Vectors is built for larger datasets (Multi-PB) than turbopuffer (≤ 1 PB).
  • Transactions: Amazon S3 Vectors offers none ACID; turbopuffer offers limited.
  • Only Amazon S3 Vectors has role-based access, streaming ingest.
  • Only turbopuffer has full-text search, json.

choose amazon-s3-vectors for

  • +Cheap long-term store for RAG embeddings
  • +Agent memory at very large scale
  • +Archive tier behind a faster vector engine
  • +Bedrock Knowledge Bases backend

best at · Vector search, RAG

choose turbopuffer for

  • +Per-user or per-repo indexes for AI coding and productivity tools
  • +RAG over billions of chunks
  • +Hybrid search for multi-tenant SaaS

best at · Vector search, Search, RAG

Amazon S3 VectorsVector storage and similarity queries built into S3, trading latency for very low cost at scale.
turbopufferServerless vector and full-text search on object storage, priced for billions of documents.
overview
Primary model
Vector
Vector
Also supports
Object
Search Engine, Document
Type
Managed service
Managed service
Status
Active
Active
Developer
Amazon Web Services
turbopuffer Inc.
First release
2025
2023
Latest version
–
–
License
ProprietaryProprietary (AWS service)
ProprietaryProprietary SaaS
Free tier
—
—
popularity
WhichDB Score
2.1
26.5
Rank
#491
#112
GitHub stars
–
–
Stack Overflow questions
–
–
scale & guarantees
Comfortable data size
Massive (Multi-PB)
Large (≤ 1 PB)
Horizontal scaling
Native
Native
Multi-region
None
None
ACID
None
Limited
Consistency
Eventual
Strong, Eventual
Schema
Schemaless
Flexible
Architecture
Serverless, Shared storage
Serverless, Shared storage, Distributed
deployment
Self-hosted
—
—
Vendor-managed cloud
✓
✓
Serverless
✓
✓
Embedded
—
—
Edge
—
—
Clouds
AWS
AWS, Google Cloud
capabilities
Transactions
—
—
Joins
—
—
Secondary indexes
✓
✓
Full-text search
—
✓
Vector search
✓
✓
Geospatial
—
—
JSON
—
✓
Change data capture
—
—
Triggers
—
—
Stored procedures
—
—
Materialized views
—
—
TTL / expiry
—
—
Pub/Sub
—
—
Columnar storage
—
—
In-memory
—
—
Durable persistence
✓
✓
Compression
—
—
Encryption at rest
✓
✓
Role-based access
✓
—
Time travel
—
—
Branching
—
—
Online schema changes
—
—
Streaming ingest
✓
—
Offline sync
—
—
Runs in WebAssembly
—
—
interfaces
Query languages
S3 Vectors API (QueryVectors with metadata filters)
turbopuffer query API (JSON)
Client languages
AWS SDKs (Python, Java, JavaScript, Go, .NET, Rust)
Python, TypeScript, Go, Java, Ruby
Best for
Vector search, RAG
Vector search, Search, RAG
Add more to this comparisonNot sure either fits? Try smart match

Amazon S3 Vectors vs turbopuffer: FAQ

What is the difference between Amazon S3 Vectors and turbopuffer?

Amazon S3 Vectors: Vector storage and similarity queries built into S3, trading latency for very low cost at scale. turbopuffer: Serverless vector and full-text search on object storage, priced for billions of documents. Amazon S3 Vectors is built for larger datasets (Multi-PB) than turbopuffer (≤ 1 PB). Transactions: Amazon S3 Vectors offers none ACID; turbopuffer offers limited. Only Amazon S3 Vectors has role-based access, streaming ingest.

When should I choose Amazon S3 Vectors over turbopuffer?

Choose Amazon S3 Vectors for cheap long-term store for RAG embeddings, agent memory at very large scale and archive tier behind a faster vector engine. Choose turbopuffer for per-user or per-repo indexes for AI coding and productivity tools; RAG over billions of chunks; and hybrid search for multi-tenant SaaS.

Is Amazon S3 Vectors or turbopuffer more popular?

turbopuffer ranks #112 on the WhichDB Score (26.5/100) and Amazon S3 Vectors ranks #491 (2.1/100). Popularity is not fit: check the requirements that matter for your project.

Are Amazon S3 Vectors and turbopuffer open source?

No. Amazon S3 Vectors is proprietary, closed-source software. No. turbopuffer is proprietary, closed-source software.