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Qdrant vs QuestDB
A side-by-side comparison of pricing, ratings, features, pros and cons.
| Overview | |||
| Description | Qdrant is open source vector similarity search engine with extended filtering support, written in Rust. | Open-source time-series database built for high-speed ingestion and real-time SQL analytics. | |
| Category | |||
| Developer | Qdrant | QuestDB | |
| Verified Status | No | No | |
| Last Updated | Sep 2026 | Sep 2026 | |
| Pricing | |||
| Pricing Model | Freemium | Open Source | |
| Free Plan | No | Yes | |
| Free Trial | No | No | |
| Open Source | No | Yes | |
| Capabilities | |||
| API Access | No | No | |
| Features | • Native hybrid search (dense + sparse vectors) • Advanced metadata filtering (nested, text, geo) • Quantization reducing memory usage up to 64x • Real-time indexing • Open source (30k+ GitHub stars), self-hostable • Managed Qdrant Cloud with a free tier | • Ingests up to 20 million rows per second • SQL interface with time-series extensions (SAMPLE BY, ASOF JOIN) • Multi-tier storage from hot WAL to cold Parquet object storage • Native Parquet/Iceberg support with REST API for AI agents • Apache 2.0 licensed open-source core • Enterprise tier with HA, RBAC/TLS/SSO, and SLA support | |
| Tags | qdrantvectoropen-sourcesimilarity-search | time-series-databaseopen-source-databasereal-time-analyticssql-databasedata-ingestion | |
| Trust and Engagement | |||
| Review Count | 0 | 0 | |
| Saves | 0 | 0 | |
| Views | 54 | 44 | |
| Quality Score | 62/100 | 57/100 | |
| Website Status | Online | Online | |
| Availability | |||
| Website | qdrant.tech | questdb.com | |
| Social Links | 3 linked | 3 linked | |
| Screenshots | No | No | |
| Reviews | |||
| Pros | • Free to use | • Free to use | |
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