NucliaDB
Open-source database for hybrid search across unstructured data
At a glance
- Editor score5.0 / 10
- PricingOpen source · paid from $700/mo · 14-day trial
- Best forTeams building hybrid search across files and content
- Free planNo
- Paid from$700/mo
- Founded1981
- Facts checked24 Sep 2026
Where it wins
- Combines vector, full-text, keyword and graph search
- Stores text, files, vectors, labels and annotations
- Offers REST API, Python SDK and cloud or self-hosted deployment
Where it doesn't
- Cloud Starter starts at $700/month
- Starter limits indexed data to 5 GB or 15,000 resources
- AI classification and other listed capabilities start with Pro
Our verdict on NucliaDB
NucliaDB is an open-source database for storing and searching unstructured content, including text, files, vectors, labels and annotations. Its hybrid retrieval combines vector, full-text, keyword and graph indexes, making it relevant to developers and AI teams building RAG, semantic search or knowledge applications. It supports cloud and self-hosted deployments, with REST and Python interfaces for integrating search into applications.
The published cloud plans start with Starter at $700 per month, which includes RAG and Q&A, plus 5 GB of indexed data or 15,000 resources. Pro costs $1,925 per month and adds AI classification, generative search, an AI Assistant and document summarization, with 25 GB or 80,000 resources. Both tiers include community support; Pro also includes Zendesk. Enterprise offers unlimited indexed data, on-premise options, and private Slack channel and Zendesk support. A 14-day free trial is available. The pricing structure makes the cloud offering a substantial commitment for teams that only need basic retrieval.
NucliaDB’s strongest fit is teams that need several retrieval modes and want deployment flexibility. Its REST API, Python SDK and CLI sit alongside Sync Agent and connections to PostgreSQL, S3-compatible storage, Google Cloud Storage and Azure Blob Storage. Distributed search and replicated index storage support its broader database role, while export to NLP pipeline-compatible formats offers another route into existing workflows. Choose it when hybrid search over varied content is central and the price or self-hosted route fits your needs; teams seeking a lower-cost hosted starting point or a narrower database feature set should compare alternatives.
NucliaDB pricing
All 3 NucliaDB plans and prices →
NucliaDB fact sheet
| Free plan | No |
|---|---|
| Paid from | $700/mo |
| Deployment | Not verified |
| Index types | Not verified |
| Max vector dimensions | Not verified |
| Metadata filtering | Not verified |
| Hybrid search | Not verified |
| Managed backups | Not verified |
| Free trial | 14 days |
| Deployment | Cloud, Self-hosted |
| Platforms | Web |
| Compliance & security | SOC 2, ISO 27001 |
| Support | Community, Tickets, Docs |
| Built for | Solo, Small business, Mid-market, Enterprise (editorial estimate) |
| Integrations | 8 integrations: REST API, Python SDK, CLI, Sync Agent, PostgreSQL, S3-compatible storage … |
| Pricing | Open source · paid from $700/mo · 14-day trial (source) |
| Website | progress.com |
| Facts checked | 24 Sep 2026 |
NucliaDB integrations
NucliaDB lists 8 integrations on its own site.
- REST API
- Python SDK
- CLI
- Sync Agent
- PostgreSQL
- S3-compatible storage
- Google Cloud Storage
- Azure Blob Storage
Alternatives to NucliaDB
- Zilliz CloudA managed vector database with hybrid search, enterprise controls, and a free tier.7.7
- PineconeA managed vector-search service with hybrid retrieval, filtering, and tiered plans.8.5
- WeaviateA flexible vector database with hybrid search, multiple APIs, and cloud or self-hosted deployment.7.5
See all NucliaDB alternatives →
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Reviewed by iTechGuides Editors · Editorial team · Updated Sep 2026
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