ClickHouseThe leading database for AI
vs
PostgreSQLThe world's most advanced open source database
Comparison · Data Warehouse · weekly run Nov 3
ClickHouse vs PostgreSQL
Which one do AI engines recommend, and how do they differ on price, fit and features?
The short answer
ClickHouse is the stronger AI pick in Data Warehouse: it has a visibility score of 16.5 versus 10.2 for PostgreSQL, and ranks ahead in 63% of the answers that name both.
Choose ClickHouse if…
- You want the brand AI engines rank higher (16.5 vs 10.2)
- AI answers describe it more positively (58% vs 35% positive)
- You need HIPAA or PCI coverage
- You prefer a larger, established vendor (501–1,000 employees)
Choose PostgreSQL if…
- 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
AI visibility side by side
Latest weekly run · Nov 3
| Metric | ClickHouse | PostgreSQL |
|---|---|---|
| Visibility score | 16.5% | 10.2% |
| Change vs last week | New | New |
| Rank in Data Warehouse | #8 | #10 |
| Share of voice | 5.4% | 2.7% |
| Mentions this run | 30 | 15 |
| Positive in AI answers | 58% | 35% |
The stronger value in each row is marked with a ✓.
Visibility score trend
Weekly runs over the last 60 days
ClickHouse 0pp · PostgreSQL 0pp over 0 weekly runs.
Engine by engine
ClickHouse leads on 3 of 3 engines
ChatGPT
AI Mode
Perplexity
ClickHousePostgreSQL
Head to head in AI answers
8 engine answers name both brands
5ClickHouse ranked higher
3PostgreSQL ranked higher
| Prompt | Engine | ClickHouse | PostgreSQL |
|---|---|---|---|
| What are the best data warehouse tools in 2026? | Perplexity | #8 | #12 |
| Top data warehouse options for B2B SaaS companies | Perplexity | #8 | #11 |
| Best data warehouse for startups | ChatGPT | #4 | #9 |
| Best data warehouse for startups | AI Mode | #5 | #6 |
| Best data warehouse for startups | Perplexity | #8 | #2 |
| Alternatives to the most popular data warehouse | AI Mode | #6 | #7 |
| Is there a free data warehouse for small teams? | AI Mode | #5 | #4 |
| Is there a free data warehouse for small teams? | Perplexity | #5 | #3 |
Features, pricing & fit
| Dimension | ClickHouse | PostgreSQL |
|---|---|---|
| Pricing model | Usage-based | — |
| Entry price | $0.218 / mo | — |
| Free plan | No · 30-day trial | — |
| Deployment | ClickHouse Cloud on AWS, GCP and Azure, self-managed open-source installs, and Bring Your Own Cloud within the customer's own VPC. | — |
| Integrations | 100+ | — |
| Compliance | HIPAA, PCI | — |
| Support | Expert support with 1 business day response time on Basic, Expert support with 1 hour response time on Scale, Enterprise support with 30 min response time for Severity 1 issues, Named Lead Support Engineer on Enterprise | Community mailing lists, Community events and local user groups |
| Founded | 2009 | — |
| Headquarters | Palo Alto, CA, United States | United States |
| Employees | 501–1,000 | 51–200 |
| Funding | Series D, led by Dragoneer | — |
| Best for | Developers and data teams that need real-time queries on large datasets at an affordable cost, including teams adding a speed layer on top of an existing data warehouse or OLTP database. | — |
Plans side by side
ClickHouse
Basic$0.218per compute unit / hr
Scale$0.299per compute unit / hr
Enterprise$0.39per compute unit / hr
PostgreSQL
Pricing not available.
Pros and cons
Themes from the AI answers that mention each brand
ClickHouse
- fast real-time analytics
- high-concurrency analytics performance
- strong for observability and log analytics
- $300 credits and 30-day trial
- best raw performance-to-cost ratio
- self-hosting requires scaling and maintenance work
- efficient operation at very large scale needs specialized expertise
- specialist option rather than broad enterprise warehouse replacement
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, “ClickHouse vs PostgreSQL”, https://slateindex.ai/compare/clickhouse-vs-postgresql, data of Nov 3, 2026. Licence: CC BY 4.0.