Pinecone, Milvus, Airtable, QuestDB, Vectorize, Bika.ai, and Shaped are the seven best free AI databases in 2026. Each offers a genuinely free way to get started—whether through a free plan, open-source licensing, or free credits—making AI-powered data management accessible to every team. From vector search and agent memory to no-code app building and time-series analytics, this shortlist covers the top free options.
This list is for developers, data engineers, and product teams who want to experiment with or build production systems using AI databases without upfront cost. Use the shortlist to compare free offerings, understand what each includes, and find the right database for your specific AI workload—whether it’s retrieval-augmented generation, real-time analytics, or autonomous agents.
How we picked these ai databases
We evaluated candidates based on the depth of their free offering, the clarity of their pricing, and their suitability for real-world AI use cases. Each pick must have a genuinely free plan or tier—not just a time-limited trial—that allows meaningful prototyping or small-scale production use. We prioritized databases with strong feature sets, reliable performance, and active communities or vendor support. The final selection spans vector databases, time-series databases, no-code platforms, and agent memory systems.
Related shortlists: Top 10 Free Testing and QA Software in 2026 and 7 Best Free Headless CMS Software in 2026.
Also worth a look: Top 5 AI Databases for Small Teams in 2026.
| Tool | Best for | Key features | Pricing | Free trial |
|---|---|---|---|---|
| Pinecone | Teams that need a fully managed, production-ready vector database with a free starter tier for semantic search and RAG. | Fully managed, serverless vector database infrastructure, Dense, sparse and full-text search indexes in one system, Embedding and reranking models hosted on Pinecone's infrastructure | Starter — free, on-demand database and inference | Free plan available |
| Milvus | Developers who want an open-source, self-hosted vector database for generative AI workloads with zero licensing cost. | Open-source vector database installable with a single pip command, Scales to tens of billions of vectors, Built for RAG systems, chatbots and recommendation engines | Open source — free to self-host | Free to use |
| Airtable | Non-technical teams looking for a no-code relational database with AI features and a free plan for core building blocks. | No-code app building with custom interfaces, Workflow automation to cut manual, repetitive tasks, Relational database links data across apps and tools | Free — no charge, core building blocks for app building | Free plan available |
| QuestDB | Engineers needing a high-performance open-source time-series database for real-time analytics on streaming data. | High ingestion throughput with ultra-low query latency, Lakehouse architecture queries hot data and Parquet via SQL, RBAC with column-level controls and SSO support | Open Source — free | Free enterprise trial available |
| Vectorize | Teams building AI agents that require persistent, evolving memory with a free self-hosted option. | Retain, Recall and Reflect APIs for agent memory, Four memory networks for storing and synthesizing context, Self-hosted with MIT license, Docker deployment and embedded PostgreSQL | Self-hosted — free, MIT open source license | Free credits to start |
| Bika.ai | Solopreneurs and small teams wanting an all-in-one platform with chat, automation, databases, and AI agents on a free plan. | Condition-based automation triggered by schedule or data updates, Handles databases up to billions of rows, Shared spaces with customizable team permissions | Free — $0/month, 5 seats, 3,000 daily AI credits | Free plan available |
| Shaped | Product teams that need real-time retrieval and ranking with personalization, starting with free credits. | Combines semantic search, keyword search and ranking in one query, Personalization improves with every user interaction, Sub-50ms latency for real-time retrieval and ranking | Pricing on request | $100 in free credits, no credit card required |
The best ai databases in 2026
Each of the seven products below earns its place with a free plan that delivers real utility, from Pinecone’s managed vector database to Milvus’s open-source powerhouse. Here’s what makes each one the best choice for its niche.
1. Pinecone
Build knowledgeable AI
Pinecone is best for: Teams that need a fully managed, production-ready vector database with a free starter tier for semantic search and RAG.
Pinecone is a fully managed vector database for semantic search, retrieval-augmented generation, and agent memory. Its free Starter plan includes an on-demand database and inference, making it ideal for prototyping and small-scale deployments. Paid plans start at $20 per month for increased limits.
Key Pinecone features
- Fully managed, serverless vector database infrastructure
- Dense, sparse and full-text search indexes in one system
- Embedding and reranking models hosted on Pinecone's infrastructure
- Multi-cloud deployment across AWS, Azure and GCP
- Role-based access control, encryption, audit logs and SSO
Pinecone pricing
- Starter — free, on-demand database and inference
- Builder — $20/month, increased limits, multi-cloud support
- Standard — from $50/month, dedicated read nodes, backup/restore
- Enterprise — from $500/month, 99.95% uptime SLA, HIPAA compliance
- Free trial: Free plan available
2. Milvus
The high-performance vector database built for scale
Milvus is best for: Developers who want an open-source, self-hosted vector database for generative AI workloads with zero licensing cost.
Milvus is an open-source vector database installable with a single pip command, scaling to tens of billions of vectors. It's free to self-host, perfect for teams comfortable managing their own infrastructure. The enterprise version offers managed services for larger deployments.
Key Milvus features
- Open-source vector database installable with a single pip command
- Scales to tens of billions of vectors
- Built for RAG systems, chatbots and recommendation engines
Milvus pricing
- Open source — free to self-host
- Free trial: Free to use
3. Airtable
AI-Native App Platform
Airtable is best for: Non-technical teams looking for a no-code relational database with AI features and a free plan for core building blocks.
Airtable combines spreadsheet familiarity with relational database structure and workflow automation. Its free plan includes core building blocks for app building without charge. Paid plans start at $20 per user per month for team collaboration.
Key Airtable features
- No-code app building with custom interfaces
- Workflow automation to cut manual, repetitive tasks
- Relational database links data across apps and tools
- Real-time collaboration with granular permission levels
- Scales to datasets with up to 100 million records
Airtable pricing
- Free — no charge, core building blocks for app building
- Team — $20/user/month, billed annually
- Business — $45/user/month, billed annually
- Enterprise Scale — custom pricing, unlimited workspaces
- Free trial: Free plan available
4. QuestDB
The fastest open source time-series database
QuestDB is best for: Engineers needing a high-performance open-source time-series database for real-time analytics on streaming data.
QuestDB is an open-source time-series database built for high-throughput ingestion and low-latency queries. It's free to use under the open-source license, with an Enterprise edition available for replication and security features. Ideal for trading platforms and monitoring systems.
Key QuestDB features
- High ingestion throughput with ultra-low query latency
- Lakehouse architecture queries hot data and Parquet via SQL
- RBAC with column-level controls and SSO support
- Automatic replication with sub-100ms failover
- Self-managed, BYOC, on-premises or hybrid deployment
QuestDB pricing
- Open Source — free
- Enterprise — contact sales for pricing
- Free trial: Free enterprise trial available
5. Vectorize
Agents that remember. Agents that learn.
Vectorize is best for: Teams building AI agents that require persistent, evolving memory with a free self-hosted option.
Vectorize offers Hindsight, an open-source agent memory system with Retain, Recall, and Reflect APIs. Self-hosted deployment is free under MIT license, while cloud and enterprise plans provide managed infrastructure. Perfect for production agents that learn from interactions.
Key Vectorize features
- Retain, Recall and Reflect APIs for agent memory
- Four memory networks for storing and synthesizing context
- Self-hosted with MIT license, Docker deployment and embedded PostgreSQL
- Managed cloud option with automatic scaling and daily backups
- REST API, Python SDK and MCP server integration
Vectorize pricing
- Self-hosted — free, MIT open source license
- Cloud — pay-as-you-go, free credits to start
- Enterprise — custom pricing, BYOC and dedicated infrastructure
- Free trial: Free credits to start
6. Bika.ai
Chat, Build, Manage One-Person Company and AI Agents
Bika.ai is best for: Solopreneurs and small teams wanting an all-in-one platform with chat, automation, databases, and AI agents on a free plan.
Bika.ai combines chat, databases, dashboards, and AI agents in one platform. Its free plan includes 5 seats and 3,000 daily AI credits, making it accessible for small operations. Paid plans start at $16 per seat per month for more credits and features.
Key Bika.ai features
- Condition-based automation triggered by schedule or data updates
- Handles databases up to billions of rows
- Shared spaces with customizable team permissions
- Pre-built workflow templates deployable in minutes
- AI-powered reporting and task summarization
Bika.ai pricing
- Free — $0/month, 5 seats, 3,000 daily AI credits
- Plus — $16/seat/month, 50,000 AI credits per seat
- Team — $33/seat/month, 100K AI credits per seat
- Business — $166/seat/month, 500K AI credits per seat
- Free trial: Free plan available
7. Shaped
The real-time retrieval engine for search, feeds, and agents
Shaped is best for: Product teams that need real-time retrieval and ranking with personalization, starting with free credits.
Shaped is a retrieval engine combining semantic search, keyword search, and ranking in one query. It offers $100 in free credits to get started with no credit card required, allowing teams to test its sub-50ms latency and personalization features. After the trial, pricing is on request.
Key Shaped features
- Combines semantic search, keyword search and ranking in one query
- Personalization improves with every user interaction
- Sub-50ms latency for real-time retrieval and ranking
- 30+ native connectors to warehouses and streaming platforms
- SOC 2 Type II certified with GDPR and HIPAA compliance
Shaped pricing
- Pricing on request
- Free trial: $100 in free credits, no credit card required
Which ai databases should you choose?
If you need a fully managed vector database with a free starter tier, Pinecone is the top pick for semantic search and RAG. For teams that prefer open-source, self-hosted infrastructure, Milvus offers unlimited scaling at zero cost. Non-technical users building custom apps should start with Airtable‘s free plan, while engineers needing high-speed time-series analytics can rely on QuestDB‘s open-source edition.
For agent memory systems, Vectorize provides a free self-hosted option, and solopreneurs will appreciate Bika.ai‘s free all-in-one platform. Finally, if you need real-time retrieval with personalization, Shaped offers $100 in free credits to test its engine. Each of these free AI databases gives you a genuine starting point to build, integrate, and scale without financial risk.
