Three editions to match your scale. From embedded databases to enterprise-grade distributed systems.
Embedded database with full SQL, vector search, and PostgreSQL compatibility. Available as Cloud managed service.
Everything in Nano plus HeliosProxy and HeliosCore. Connection pooling, load balancing, and advanced routing.
Enterprise platform with 193 crates. Distributed MVCC, multi-primary replication, GPU acceleration, and 14 protocol adapters.
Managed, serverless HeliosDB Nano. Zero configuration, automatic scaling.
| Feature | Free | Starter $9/mo | Pro $49/mo | Enterprise |
|---|---|---|---|---|
| Databases | 1 | 5 | 20 | Unlimited |
| Storage | 100 MB | 1 GB | 10 GB | Unlimited |
| QPS | 10 | 100 | 1,000 | Unlimited |
| Connections | 5 | 20 | 100 | Unlimited |
| Vector Storage | 10K | 100K | 1M | Unlimited |
| API Requests/mo | 10K | 100K | 1M | Unlimited |
| Time-Travel Retention | 7 days | 30 days | 90 days | Custom |
| Encryption | Zero-Knowledge | All modes | All modes | All modes |
| Regions | 1 | 3 | All | All + Custom |
| SLA | — | 99.5% | 99.9% | 99.99% |
| Support | Community | Priority | Dedicated 24/7 |
The free tier grows as you go. Each step unlocks more quota — instant BaaS signup, then verify your email, then complete a product feedback session.
| Free level | Instant | Verified | Feedback given |
|---|---|---|---|
| Unlock by | Instant signup | Verify email | Give feedback |
| Storage | 100 MB | 500 MB | 1 GB |
| Databases | 1 | 3 | 4 |
| Vectors | 10K | 50K | 100K |
| API Requests/mo | 10K | 50K | 100K |
| Time-Travel Retention | 7 days | 7 days | 14 days |
Provision instantly with a single quick-start API call. Explore the BaaS API →
High-level feature comparison across all HeliosDB editions.
| Feature | Nano | Lite | Full |
|---|---|---|---|
| Core Database | |||
| Full SQL (DDL/DML/DQL) | ✓ | ✓ | ✓ |
| PostgreSQL Wire Protocol | ✓ | ✓ | ✓ |
| ACID Transactions (MVCC) | ✓ | ✓ | ✓ |
| JSONB Support | ✓ | ✓ | ✓ |
| Time-Travel Queries | ✓ | ✓ | ✓ |
| Database Branching | ✓ | ✓ | ✓ |
| Vector & AI | |||
| HNSW Vector Index | ✓ | ✓ | ✓ |
| Product Quantization (~16× default) | ✓ | ✓ | ✓ |
| NL-to-SQL / AI Query | ✓ | ✓ | ✓ |
| GPU Acceleration | — | — | ✓ |
| AI-Native Retrieval | |||
CREATE EXTENSION hdb_code · SQL-callable LSP | ✓ | ✓ | ✓ |
WITH CONTEXT SQL clause · Graph-RAG | ✓ | ✓ | ✓ |
| Native MCP server (HTTP / WS / SSE / stdio) | ✓ | ✓ | ✓ |
| Eight ingestion adapters (incl. Docling: PDF / Office / audio / image) | ✓ | ✓ | ✓ |
| In-process embedder (fastembed-rs + BGESmallENV15) | ✓ | ✓ | ✓ |
helios_lsp_rename_apply · write-side refactor | ✓ | ✓ | ✓ |
| Security & Encryption | |||
| AES-256-GCM TDE | ✓ | ✓ | ✓ |
| Zero-Knowledge Encryption | ✓ | ✓ | ✓ |
| FIPS 140-3 Compliance | ✓ | ✓ | ✓ |
| Row-Level Security | ✓ | ✓ | ✓ |
| SOC 2 / HIPAA Audit Toolkit | ✓ | ✓ | ✓ |
| Infrastructure (Lite & Full) | |||
| HeliosProxy (connection pooling, routing) | — | ✓ | ✓ |
| HeliosCore (storage engine) | — | ✓ | ✓ |
| Streaming Replication | — | ✓ | ✓ |
| HA / Failover | — | Warm standby | Multi-primary |
| Enterprise Platform (Full Only) | |||
| Distributed MVCC | — | — | ✓ |
| 14 Protocol Adapters | — | — | ✓ |
| 7 Foreign Data Wrappers | — | — | ✓ |
| DocumentStore API (MongoDB-compatible) | — | — | ✓ |
| Change Streams | — | — | ✓ |
| Quantum-Inspired Optimization | — | — | ✓ |
| AI & Automation (Add-ons) | |||
| AI Support | ✓ Add-on | ✓ Add-on | ✓ Add-on |
| AI-DBA Agent | — | ✓ Add-on | ✓ Add-on |
| Deployment | |||
| Embedded Library | ✓ | ✓ | ✓ |
| Managed Cloud | ✓ | Coming soon | Coming soon |
| Self-Hosted Server | ✓ | ✓ | ✓ |
| Crate Count | ~40 | ~60 | 193 |
Scale beyond your plan limits with pay-as-you-go add-ons.
Intelligent support and autonomous database administration for your HeliosDB deployment.
AI-powered knowledge assistant trained on HeliosDB docs. Instant answers with ready-to-run SQL examples.
Autonomous database administration with proactive monitoring, self-healing, anomaly detection, and performance optimization.
Start free with Nano Cloud or contact us for Lite and Full edition licensing.