# Google Cloud Spanner

> Always-on database with virtually unlimited scale

- **Canonical URI:** https://www.vioscale.ai/software/google-cloud-spanner
- **Category:** Relational Databases
- **Homepage:** https://cloud.google.com/spanner
- **Also known as:** google-cloud-spanner
- **Profile claimed by vendor:** no
- **Last updated:** 2026-08-03T12:44:25.603Z

## Vioscale score

**42.8 / 100**, confidence 38% (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 | 45.8 | 17 | 778.9 | ✓ |
| integrations | 17.3 | 8 | 138.5 | ✓ |
| security_posture | 0 | 18 | 0 | - |
| pricing_transparency | 25 | 8 | 200 | ✓ |

## Pricing

_As of 2026-08-03, [verify at source](https://cloud.google.com/spanner). Independently observed._

Usage-based · Free tier · 90-day trial

> Usage-based pricing: compute capacity (nodes/processing units, hourly), storage (monthly), backups, data replication, network bandwidth. Free 90-day trial instances. Optional 1-year and 3-year committed use discounts. Three editions available: Standard, Enterprise, and Enterprise Plus.

## About

Google Cloud's globally distributed, multi-model database supporting relational, graph, key-value, and search capabilities with native PostgreSQL interface and Gemini AI integration.

_Independently observed._

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

## Integrations (3)

_Independently observed._

- Gemini Enterprise Agent Platform
- Model Context Protocol (MCP)
- Spanner Graph

## Capabilities

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

| Capability | Supported |
|---|:--:|
| **Core** | |
| SQL model | Full SQL |
| **Transactions** | |
| ACID transactions | Full |
| Highest isolation level | - |
| **Consistency** | |
| Consistency | Strong |
| **Scale** | |
| Horizontal scale | Natively distributed |
| **Replication** | |
| Replication | - |
| **Availability** | |
| Automatic failover / HA | ✓ |
| **Deployment** | |
| Deployment | Managed |
| Serverless / scale-to-zero | - |
| **Compatibility** | |
| Wire compatibility | Postgres protocol |
| **Extensibility** | |
| Extensions / plugins / UDFs | ✓ |
| **Licensing** | |
| Licence class | Proprietary |
| **Data types** | |
| JSON / document support | - |
| Geo / spatial | - |

## Facts

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

### integrations

| Attribute | Value | Source | Retrieved | Confidence |
|---|---|---|---|---|
| integrations.count | 3 | [link](https://cloud.google.com/spanner) | 2026-08-03 | 60% (medium) |

### pricing

| Attribute | Value | Source | Retrieved | Confidence |
|---|---|---|---|---|
| pricing.free_tier | yes | [link](https://cloud.google.com/spanner) | 2026-08-03 | 60% (medium) |
| pricing.model | commercial | [link](https://cloud.google.com/spanner) | 2026-08-03 | 70% (medium) |
| pricing.price_level | low | [link](https://cloud.google.com/spanner) | 2026-08-03 | 60% (medium) |

### reliability

| Attribute | Value | Source | Retrieved | Confidence |
|---|---|---|---|---|
| reliability.status_page | yes | [link](https://status.cloud.google.com) | 2026-08-03 | 60% (medium) |

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