CrateDB vs PostgreSQL
Which one do AI engines recommend, and how do they differ on price, fit and features?
The short answer
PostgreSQL is the stronger AI pick in Vector Databases: it has a visibility score of 49 versus 0 for CrateDB, and ranks ahead in 0% of the answers that name both.
Choose CrateDB if…
- You need ISO 27001 (CrateDB Cloud on AWS and Azure) or SOC 2 Type II coverage
- Handles massive time-series, IoT, and operational data in real time
- Strong for high-volume real-time analytics
- Horizontal scalability with SQL access
Choose PostgreSQL if…
- You want the brand AI engines rank higher (49 vs 0)
- AI answers describe it more positively (35% vs 0% positive)
- You prefer a larger, established vendor (51–200 employees)
- Free open-source software
AI visibility side by side
Latest weekly run · Nov 2
| Metric | CrateDB | PostgreSQL |
|---|---|---|
| Visibility score | 0% | 49% |
| Change vs last week | New | New |
| Rank in Vector Databases | #29 | #3 |
| Share of voice | 0% | 12.6% |
| Mentions this run | 0 | 59 |
| Positive in AI answers | 0% | 35% |
The stronger value in each row is marked with a ✓.
Visibility score trend
Weekly runs over the last 60 days
CrateDB 0pp · PostgreSQL 0pp over 0 weekly runs.
Engine by engine
PostgreSQL leads on 3 of 3 engines
Head to head in AI answers
3 engine answers name both brands
| Prompt | Engine | CrateDB | PostgreSQL |
|---|---|---|---|
| What are the pros and cons of CrateDB? | ChatGPT | #1 | #2 |
| What are the pros and cons of CrateDB? | AI Mode | #1 | #3 |
| What are the pros and cons of CrateDB? | Perplexity | #1 | #2 |
Features, pricing & fit
| Dimension | CrateDB | PostgreSQL |
|---|---|---|
| Pricing model | Usage-based | — |
| Entry price | Free; paid from $0.073 / mo | — |
| Free plan | Yes | — |
| Deployment | On-prem, at the edge, in public or private cloud, or fully managed on CrateDB Cloud or STACKIT. | — |
| Compliance | ISO 27001 (CrateDB Cloud on AWS and Azure), SOC 2 Type II | — |
| Support | Development support (free plan), Basic support (included with dedicated plans), Premium support (optional) | Community mailing lists, Community events and local user groups |
| Founded | 2013 | — |
| Headquarters | Vienna, Austria | United States |
| Employees | 11–50 | 51–200 |
| Funding | Seed round (per Caplight, amount not stated) | — |
| Best for | Teams with high-volume, high-cardinality operational data, such as sensor, telemetry and event streams, who need real-time analytics, search and vector queries without ETL. | — |
Plans side by side
CrateDB
PostgreSQL
Pricing not available.
Pros and cons
Themes from the AI answers that mention each brand
CrateDB
- Handles massive time-series, IoT, and operational data in real time
- Strong for high-volume real-time analytics
- Horizontal scalability with SQL access
- Weaker than full transactional guarantees
PostgreSQL
- Free open-source software
- Adds vector search to an existing PostgreSQL database without a new database
- Wide compatibility with drivers, BI tools, and language ecosystems
- Broad deployment and transparent self-hosted pricing
- Hosting, backups, and maintenance must be paid for when self-hosted
Data collected ·ChatGPT, Perplexity, Google AI Mode·coverage 100%·next run
Cite as: SlateIndex, “CrateDB vs PostgreSQL”, https://slateindex.ai/compare/cratedb-vs-postgresql, data of Nov 2, 2026. Licence: CC BY 4.0.