#26 in DatabasesUpdated 2026-08

TDengine

by TDengine · Industrial time-series platform and data historian alternative

49.1 — BenchRank score out of 100

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Overview

TDengine is an industrial data platform made of two parts: TDengine TSDB, a time-series database with its own ingestion, storage and query engines, and TDengine IDMP, which adds asset modelling, visualisation, event management and AI agents. Data arrives from OPC, MQTT, Kafka and PI System through zero-code connectors, and it runs at the edge, on-premises or as a managed cloud service.

Best for: Industrial teams replacing a data historian such as the AVEVA PI System with a time-series platform.
Pricing: Free self-hosted up to 5,000 tags; annual licences from $12,500/year at 7,500 tags (perpetual from $31,250), and managed TDengine Cloud from $970/month for 5,000 tags.
Runs on: macOSSelf-hosted

Strengths and trade-offs

Strengths

Free forever for self-hosted use up to 5,000 tags
Open-source core: TDengine TSDB-OSS includes clustering
Zero-code connectors for OPC, MQTT, Kafka and PI System
Published price list by tag count, plus REST, JDBC, ODBC and MCP

Trade-offs

Free-tier deployments get no support unless you buy it at $3,375/year
High availability costs an extra 30% of the annual or perpetual price
The 5,000-tag free tier is self-hosted only; Cloud is priced separately
Above 5,000 tags a paid PoC or paid licence is required

Pricing

Published plans from TDengine’s own pricing page, in USD. Usage charges and add-ons may apply on top.

TDengine pricing tiers, monthly and annual rates in USD
Plan	Monthly	Annual (per month)	Includes
Free Tier (up to 5,000 tags)	—up to 5,000 tags, self-hosted	—	Full functionality and performance, no trial deadline For evaluation, PoC or small production use Standard Support not included; optional at $3,375/year
Starter	$970per month for 5,000 tags	$970	Fully managed TDengine Cloud on AWS, Azure or GCP 5,000 tags Annual plan $11,640
Small	$1740per month for 10,000 tags	$1740	Managed hosting, infrastructure and operations included 10,000 tags Annual plan $20,880
Medium	$2570per month for 20,000 tags	$2570	20,000 tags All TDengine TSDB and IDMP components Annual plan $30,840
Large	$3500per month for 40,000 tags	$3500	40,000 tags Annual plan $42,000 High availability costs 30% extra
XLarge	$5220per month for 80,000 tags	$5220	80,000 tags Annual plan $62,640 Larger workloads via a custom quote

How this score is made up

Each dimension is scored out of 100 and combined into the headline score using fixed weights.

MCP support: 60 out of 100
API quality: 10 out of 100
Documentation: 30 out of 100
Agent friendliness: 70 out of 100
Pricing transparency: 85 out of 100
Changelog: 55 out of 100
Marketing site structure: 75 out of 100
Operational trust: 20 out of 100

Measured, but not part of the score

Useful to know, but not a mark for or against the product — so these do not affect the ranking.

Openness: 40 out of 100
Maintenance: 100 out of 100

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