TDengine vs ClickHouse: Which is Better in 2026?
Choosing between TDengine and ClickHouse comes down to understanding what each tool does best. This comparison breaks down the key differences so you can make an informed decision based on your specific needs, not marketing claims.
Bottom line: ClickHouse wins this matchup. PostgreSQL is our overall Data & Databases pick. PostgreSQL is our free Data & Databases pick. Pick TDengine if you need a free tier to start with.
Short on time? Here's the quick answer
We've tested both tools. Here's who should pick what:
TDengine
AI-powered data historian built on a high-performance time-series database for industrial operations.
Best for you if:
- • You want a free tier before you commit
- • You want significantly more affordable than traditional historian systems like PI System
- • You want built-in AI capabilities for advanced operational insights and predictive maintenance
ClickHouse
Fast open-source analytics database
Best for you if:
- • You want extremely fast analytics
- • You want good compression
| At a Glance | TDengine | ClickHouse |
|---|---|---|
Starts at | FreeFree tier available | Custom |
Best For | Data & Databases | Data & Databases |
Rating | 4.7/5G2 4.7 | 4.5/5G2 4.5 |
Free plan | Yes | No |
Watch out for | n/a | Cross-region data transfer is billed separately. Multi-region architectures with replication can double or triple effective storage costs. |
Choose TDengine or ClickHouse?
Choose TDengine if
AI-powered data historian built on a high-performance time-series database for industrial operations.
- You want a free tier before you commit
- You want significantly more affordable than traditional historian systems like PI System
- You want built-in AI capabilities for advanced operational insights and predictive maintenance
Choose ClickHouse if
Fast open-source analytics database
- You want extremely fast analytics
- You want good compression
| Feature | TDengine | ClickHouse |
|---|---|---|
| Pricing Model | Freemium | Paid |
| User Rating | ★4.7/5 15 reviews | ★4.5/5 23 reviews |
| Categories | Data & DatabasesAnalytics | Data & DatabasesAnalytics |
In-Depth Analysis
TDengine
AI-powered data historian built on a high-performance time-series database for industrial operations.
Strengths
- +Significantly more affordable than traditional historian systems like PI System.
- +Built-in AI capabilities for advanced operational insights and predictive maintenance.
- +Open ecosystem with no vendor lock-in, supporting cloud and on-prem deployments.
- +High-performance and scalable, proven in mission-critical industrial operations.
- +Comprehensive security and compliance certifications.
Weaknesses
- -Pricing for managed services and higher tag counts can become substantial.
- -Requires technical expertise for self-hosted deployments and advanced configurations.
Key features
ClickHouse
Fast open-source analytics database
ClickHouse Cloud is genuinely cheap for read-heavy analytical workloads thanks to aggressive columnar compression and per-minute compute billing.
Watch out
Cross-region data transfer is billed separately. Multi-region architectures with replication can double or triple effective storage costs.
Strengths
- +Extremely fast analytics
- +Good compression
- +SQL interface
- +Column-oriented
- +Open source
Weaknesses
- -Not for OLTP
- -Updates expensive
- -Operations complex
- -Learning curve
- -Specific use cases
Key features
Pricing: TDengine vs ClickHouse
| Plan | TDengine | ClickHouse |
|---|---|---|
| Tier 1 | Try Free Cloud TDengine TSDB | Basic |
| Tier 2 | Try Free Cloud TDengine IDMP | usage-based Scale |
| Tier 3 | N/A | custom Enterprise |
Pricing verified from each vendor's public pricing page. Compare in detail on TDengine pricing and ClickHouse pricing.
Who Should Use What?
On a budget?
TDengine has a free tier. ClickHouse is paid only.
Go with: TDengine
Want the highest-rated option?
TDengine: 4.7/5 (15 reviews). ClickHouse: 4.5/5 (23 reviews).
Go with: TDengine
Value user reviews?
TDengine: 15 reviews (4.7/5). ClickHouse: 23 reviews (4.5/5).
Go with: ClickHouse
3 Questions to Help You Decide
What's your budget?
TDengine is freemium. ClickHouse is paid. TDengine lets you start free.
What's your use case?
Both are data & databases tools. Compare their specific features to decide.
How important are ratings?
TDengine is rated higher: 4.7/5 vs 4.5/5.
Key Takeaways
ClickHouse
- Larger review base (23 reviews)
- Our pick for this comparison
TDengine
- Has a free tier
- Higher user rating: 4.7/5 vs 4.5/5
The Bottom Line
ClickHouse wins this matchup. PostgreSQL is our overall Data & Databases pick. PostgreSQL is our free Data & Databases pick. TDengine has a free tier if you want to test without paying.
Frequently Asked Questions
Is TDengine or ClickHouse better?
ClickHouse is rated in our evaluation. TDengine is freemium and ClickHouse is paid.
What are TDengine and ClickHouse used for?
TDengine: AI-powered data historian built on a high-performance time-series database for industrial operations.. ClickHouse: Fast open-source analytics database.
What does TDengine cost vs ClickHouse?
TDengine is freemium (free tier + paid plans). ClickHouse is a paid tool. Visit their websites for detailed pricing.