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Head-to-head · Time-Series Databases

Grafana Mimir vs TDengine

  • Updated Oct 2026
  • Both researched from official sources
  • 4 checks side by side
Higher score Grafana Mimir #6 in Time-Series Databases 8.7/10 Open source ✓ 2 of 3 features Visit Grafana Mimir
TDengine #10 in Time-Series Databases 8.2/10 Free plan Free plan✓ 3 of 3 features Visit TDengine

Grafana Mimir leads on 0 checks, TDengine on 1, and 3 are even. Who comes out ahead on the 4 yes/no, price and count checks where we have data for both products. The editor score weighs everything else too.

Our verdict

  • Highest scoreGrafana Mimir · 8.7/10
  • Free planonly TDengine
  • Most featuresTDengine · 3 of 3

Grafana Mimir scores higher on our rubric for time-series databases: 8.7 against 8.2 out of 10; our editors rank them #6 and #10.

On deployment, TDengine gives you Both where Grafana Mimir offers Self_hosted. TDengine offers sql support; Grafana Mimir doesn't.

Grafana Mimir is the better fit for large-scale Prometheus storage. TDengine is the better fit for industrial telemetry and high-volume ingestion.

  • Grafana Mimir fits best

    Large-scale Prometheus storage

  • TDengine fits best

    Industrial telemetry and high-volume ingestion

Advertiser disclosure: iTechGuides is reader-supported. Vendors can pay for top positions in our rankings and for a place on other products' pages, and we may earn a commission when you click some links. Bought places stand at the number bought; this page and our disclosure say so. Paying vendors may get a fuller, more detailed review from our editors, and that review can change their score. How we rank.

Side by side

Feature Grafana Mimir 8.7/10 Visit ↗ TDengine 8.2/10 Visit ↗
At a glance
Editor score 8.7 8.2
Ranking #6 in Time-Series Databases #10 in Time-Series Databases
Best for Large-scale Prometheus storage Industrial telemetry and high-volume ingestion
Pricing model Free Free plan + paid
Starting price Open source —
Free plan Not checked yet ✓ (best)
Free trial — —
Deployment Self-hosted Cloud, Self-hosted
Support Email, Community, Docs Docs · 24/7
Integrations 12 integrations 14 integrations
Built for Mid-market, Enterprise Small business, Mid-market, Enterprise
Features Grafana Mimir 2/3 · TDengine 3/3
SQL support — ✓ (best)
Retention policies ✓ ✓
Horizontal scaling ✓ ✓
Specs
Deployment Self_hosted Both
Query languages PromQL SQL
Ingestion methods Prometheus remote write; Grafana Agent; Prometheus Agent; OpenTelemetry; Influx; Graphite; Datadog SQL, InfluxDB Line Protocol, OpenTSDB Telnet Protocol, OpenTSDB JSON Protocol, MQTT, OPC UA, OPC DA, Kafka, CSV, PI System, MySQL, PostgreSQL, Oracle, MongoDB
Our review
Pros
  • Horizontally scalable architecture with clustering and replication
  • Multi-tenancy, tenant isolation, and configurable retention
  • Object-store support plus recording and alerting rules
  • Supports MQTT, Kafka, OPC UA, relational databases, and line protocols
  • Combines retention, clustering, stream processing, and edge-to-cloud synchronization
  • Offers self-hosted, managed cloud, and a free tier for up to 5,000 tags
Cons
  • Self-hosted deployment requires operational ownership
  • PromQL is the documented query language, not SQL
  • Focused on Prometheus and OpenTelemetry metrics rather than general SQL workloads
  • Paid cloud pricing starts at $970 per month
  • Free Tier is limited to self-hosted usage up to 5,000 tags
  • Paid self-hosted licenses support 7,500 tags
Our verdict

Grafana Mimir is an open-source time-series database for organizations operating large-scale metrics platforms. It provides long-term storage for Prometheus and OpenTelemetry metrics, with Prometheus-compatible remote write ingestion,…

Read the review →

TDengine is a distributed time-series database for industrial and IoT data. It stores and queries timestamped data through TDengine SQL, with features for configurable retention, distributed clustering, stream processing, data…

Read the review →
  1. Grafana MimirTime-Series Databases 8.7Open source
  2. TDengineTime-Series Databases 8.2Free plan

Strengths and trade-offs

  • Grafana Mimir — where it wins

    • Horizontally scalable architecture with clustering and replication
    • Multi-tenancy, tenant isolation, and configurable retention
    • Object-store support plus recording and alerting rules

    Where it doesn't

    • Self-hosted deployment requires operational ownership
    • PromQL is the documented query language, not SQL
    • Focused on Prometheus and OpenTelemetry metrics rather than general SQL workloads

  • TDengine — where it wins

    • Supports MQTT, Kafka, OPC UA, relational databases, and line protocols
    • Combines retention, clustering, stream processing, and edge-to-cloud synchronization
    • Offers self-hosted, managed cloud, and a free tier for up to 5,000 tags

    Where it doesn't

    • Paid cloud pricing starts at $970 per month
    • Free Tier is limited to self-hosted usage up to 5,000 tags
    • Paid self-hosted licenses support 7,500 tags

More comparisons

All Time-Series databases comparisons → · Full ranking →

Guides on Time-Series databases

Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026

Last updated · How we research and update