PostgreSQL vs TiDB
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 1.9 for TiDB, and ranks ahead in 100% of the answers that name both.
Choose PostgreSQL if…
- You want the brand AI engines rank higher (49 vs 1.9)
- 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
Choose TiDB if…
- You need ISO/IEC 27001:2013 or SOC 2 Type 2 or GDPR or CCPA coverage
- You prefer a larger, established vendor (501–1,000 employees)
AI visibility side by side
Latest weekly run · Nov 2
| Metric | PostgreSQL | TiDB |
|---|---|---|
| Visibility score | 49% | 1.9% |
| Change vs last week | New | New |
| Rank in Vector Databases | #3 | #20 |
| Share of voice | 12.6% | 0.7% |
| Mentions this run | 59 | 3 |
| Positive in AI answers | 35% | — |
The stronger value in each row is marked with a ✓.
Visibility score trend
Weekly runs over the last 60 days
PostgreSQL 0pp · TiDB 0pp over 0 weekly runs.
Engine by engine
PostgreSQL leads on 3 of 3 engines
Head to head in AI answers
2 engine answers name both brands
| Prompt | Engine | PostgreSQL | TiDB |
|---|---|---|---|
| Compare the leading Vector Databases platforms | Perplexity | #5 | #11 |
| Best vector database with AI features | Perplexity | #4 | #8 |
Features, pricing & fit
| Dimension | PostgreSQL | TiDB |
|---|---|---|
| Pricing model | — | Usage-based |
| Entry price | — | Free; paid from $400 / mo |
| Free plan | — | Yes |
| Deployment | — | Managed cloud service (TiDB Cloud), bring-your-own-cloud (BYOC) deployment in the customer's cloud account, and self-managed open source |
| Compliance | — | ISO/IEC 27001:2013, SOC 2 Type 2, GDPR, CCPA |
| Support | Community mailing lists, Community events and local user groups | Online documentation and setup guides, FAQs, Contact sales |
| Founded | — | 2015 |
| Headquarters | United States | Sunnyvale, California |
| Employees | 51–200 | 501–1,000 |
| Funding | — | Series A |
| Best for | — | Teams building AI agents and agentic workloads that need vectors, transactions and analytics in one database |
Plans side by side
PostgreSQL
Pricing not available.
TiDB
Pros and cons
Themes from the AI answers that mention each brand
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
TiDB
Profile in progress.
Data collected ·ChatGPT, Perplexity, Google AI Mode·coverage 100%·next run
Cite as: SlateIndex, “PostgreSQL vs TiDB”, https://slateindex.ai/compare/postgresql-vs-tidb, data of Nov 2, 2026. Licence: CC BY 4.0.