# TDengine

> Free forever for up to 5,000 tags, with annual and perpetual licenses for larger deployments

- **Canonical URI:** https://www.vioscale.ai/software/tdengine
- **Category:** Time-Series Databases
- **Homepage:** https://tdengine.com
- **Also known as:** tdengine
- **Profile claimed by vendor:** no
- **Last updated:** 2026-08-01T21:35:25.761Z

## Vioscale score

**62.6 / 100**, confidence 41% (low).

Composite of weighted, independently-sourced signals (no user reviews, no vendor payment).

| Signal | Score | Weight | Contribution | Evidence present |
|---|--:|--:|--:|:--:|
| price_level | 80 | 6 | 480 | ✓ |
| reliability | 50 | 10 | 500 | ✓ |
| capabilities | 28.9 | 17 | 491.4 | ✓ |
| github_stars | 83 | 7 | 580.8 | ✓ |
| integrations | 0 | 8 | 0 | - |
| github_activity | 63.1 | 20 | 1262 | ✓ |
| release_cadence | 84.4 | 12 | 1013.3 | ✓ |
| security_posture | 65 | 18 | 1170 | ✓ |
| package_downloads | 0 | 6 | 0 | - |
| pricing_transparency | 80 | 8 | 640 | ✓ |
| stackoverflow_activity | 0 | 20 | 0 | - |

## Pricing

_As of 2026-08-01, [verify at source](https://tdengine.com). Independently observed._

Hybrid · Free tier

> Free for up to 5,000 tags. Annual licenses from $12,500/year, perpetual from $31,250 (both scale with tag count). Optional support from $3,375/year. High Availability at +30%.

| Plan | Price | Free | Commitment |
|---|---|:--:|---|
| Free Tier | Free | ✓ | - |
| Annual License | From $12,500/year for 7,500 tags. Standard Support included. | - | annual |
| Perpetual License | From $31,250 for 7,500 tags. One-time payment. | - | - |

### Free Tier

Free for deployments up to 5,000 tags. Includes product usage rights. Standard Support available optionally.

**Included limits:** tags: 5,000

- Up to 5,000 tags
- Product usage rights

### Annual License

Annual license for deployments above 5,000 tags. Pricing varies by tag count. Standard Support included.

- Pricing scales from 7,500 to 500,000+ tags
- Standard Support
- Software updates
- Security patches

### Perpetual License

One-time perpetual license for deployments above 5,000 tags. Pricing varies by tag count.

- Perpetual usage rights

### Add-ons

- **Annual Support (Free Tier)** ($3375/yr)
- **High Availability** (30% per annual or perpetual plan cost)

## About

AI-native industrial data platform and high-performance time-series database that unifies data ingestion, storage, analytics, modeling, visualization, and AI applications.

_Independently observed._

## Platform & deployment
- **Deployment:** Cloud / SaaS, Hybrid, On-premise, Self-hosted

## Capabilities

_The capabilities that matter for Time-Series Databases. "-" = undocumented, not absent._

| Capability | Supported |
|---|:--:|
| **Query** | |
| Query language (SQL / PromQL / InfluxQL-Flux / Graphite) | SQL |
| **Ingest** | |
| Ingest model | - |
| **Model** | |
| Data model | Metrics (labels/tags) |
| **Lifecycle** | |
| Downsampling / rollups | - |
| **Storage** | |
| Compression (columnar / delta / Gorilla) | - |
| **Performance** | |
| High-cardinality handling | - |
| **Scale** | |
| Clustering / horizontal scale | Distributed / sharded |
| Replication / HA | ✓ |
| **Deployment** | |
| Deployment | Self-hosted |
| **Lifecycle** | |
| Retention / TTL | - |
| **Query** | |
| SQL compatibility | Full SQL |
| **Interop** | |
| Prometheus remote-write compatible | - |
| **Licensing** | |
| Licence class | Proprietary |

## Facts

Every value below carries its source and our confidence. Facts are re-crawled on a freshness schedule.

### language

| Attribute | Value | Source | Retrieved | Confidence |
|---|---|---|---|---|
| language.primary | C | [link](https://github.com/taosdata/TDengine) | 2026-08-01 | 90% (high) |

### activity

| Attribute | Value | Source | Retrieved | Confidence |
|---|---|---|---|---|
| activity.commits_last_30d | 100 | [link](https://github.com/taosdata/TDengine/pulse) | 2026-08-01 | 65% (medium) |

### adoption

| Attribute | Value | Source | Retrieved | Confidence |
|---|---|---|---|---|
| adoption.github_stars | 25,013 | [link](https://github.com/taosdata/TDengine) | 2026-08-01 | 90% (high) |

### license

| Attribute | Value | Source | Retrieved | Confidence |
|---|---|---|---|---|
| license.spdx | AGPL-3.0 | [link](https://github.com/taosdata/TDengine) | 2026-08-01 | 95% (high) |

### pricing

| Attribute | Value | Source | Retrieved | Confidence |
|---|---|---|---|---|
| pricing.free_tier | yes | [link](https://tdengine.com) | 2026-08-01 | 48% (low) |
| pricing.model | freemium | [link](https://tdengine.com) | 2026-08-01 | 56% (medium) |
| pricing.price_level | low | [link](https://tdengine.com) | 2026-08-01 | 60% (medium) |
| pricing.transparent | yes | [link](https://tdengine.com) | 2026-08-01 | 60% (medium) |

### release

| Attribute | Value | Source | Retrieved | Confidence |
|---|---|---|---|---|
| release.cadence_days | 28 | [link](https://github.com/taosdata/TDengine/releases) | 2026-08-01 | 70% (medium) |

### reliability

| Attribute | Value | Source | Retrieved | Confidence |
|---|---|---|---|---|
| reliability.status_page | yes | [link](https://tdengine.com/status) | 2026-08-01 | 60% (medium) |

### security

| Attribute | Value | Source | Retrieved | Confidence |
|---|---|---|---|---|
| security.iso27001 | yes | [link](https://tdengine.com) | 2026-08-01 | 48% (low) |
| security.soc2 | yes | [link](https://tdengine.com) | 2026-08-01 | 48% (low) |

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*Source: Vioscale (https://www.vioscale.ai/software/tdengine). Independent, evidence-based software intelligence. Cite the canonical URI.*