Google Cloud Spanner vs PlanetScale
On the evidence we track, PlanetScale leads this comparison with a composite score of 66/100. Scores are only directly comparable because these tools share a category; the full breakdown and every source is below.
Capabilities
Feature-by-feature on the axes that matter for relational databases. “-” means undocumented, not absent.
What each one is
The product in its own terms, so the numbers below have context.
Google Cloud Spanner
Google Cloud Spanner is a managed database service that unifies multiple data models (relational, key-value, graph, vector search) on one platform. It provides up to 99.999% uptime with globally consistent transactions through a distributed timestamp system.
PlanetScale
LeaderPlanetScale provides managed cloud database services optimized for performance and reliability. It offers sharded versions of MySQL and PostgreSQL that support horizontal scaling, zero-downtime operations including schema changes, automatic failover, and connection pooling.
Pricing
List pricing as published by each vendor, with the date we read it. Always verify at the source before you buy.
Google Cloud Spanner
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.
PlanetScale
LeaderFrom $5/month. Private connection traffic $0.01/GB.
- PostgresFrom $5/month
- High availability
- Automatic failover across three availability zones
Platform & deployment
Where each product runs and how it can be hosted. A dash means undocumented, not unsupported.
Integrations
What each product connects to. Counts come from the vendor's own integration directory where one exists.
- Cursor
Google Cloud Spanner
- Gemini Enterprise Agent Platform
- Gemini CLI
- Model Context Protocol (MCP)
- Agent Development Kit (ADK)
- Data Agent Kit
- VS Code
- GitHub Copilot
- Kiro
PlanetScale
Leader- Vantage
- Netlify
- Debezium
- Codex
- Terraform
- Prometheus
Google Cloud Spanner or PlanetScale: which one depends on you
A composite score cannot know your constraints. Describe them and both get re-weighted against what you actually need, with the evidence behind every position.
Free to run, no account needed to start. How the evaluation works
Comparison generated from independently-sourced facts. Every value links to its source and retrieval date. See the method.