Firestore vs Microsoft SQL Server
Firestore
cloud.google.comMicrosoft SQL Server
microsoft.comSide by side
| Figure | Firestore | Microsoft SQL Server |
|---|---|---|
| Price from | Free | Free |
| Free plan | Yes | Yes |
| Free trial | Yes | — |
| Open source | — | — |
| Web | Yes | — |
| Windows | — | Yes |
| Linux | — | Yes |
| iOS | Yes | — |
| Android | Yes | — |
| API | Yes | Yes |
| Self-hosted | — | Yes |
| Plans published | 9 | 20 |
| Spec score · Database Software | 9.2 (#4) | 8.5 (#24) |
| Free plan | Yes | Yes |
| Integrations | The product page names Google AI Studio, remote MCP, LangChain, and LlamaIndex integrations for building generative AI applications. | SQL Server 2025 integrates with LangChain, Semantic Kernel, Entity Framework Core, Microsoft Azure, and Microsoft Fabric. |
| Security | Firestore integrates with Cloud IAM, Cloud Identity Platform, and Firebase Authentication for identity-based access controls and data validation. | Microsoft's SQL Server security guidance covers platform and network security, permissions, encryption, and secure connections. |
Plans
Firestore
- Standard edition — document readsPrice not published
- Standard edition — document writesPrice not published
- Standard edition — document deletesPrice not published
- Standard edition — stored dataPrice not published
- Free quotaFree
- Free quotaFree
- Standard edition pay-as-you-go$0.03 a month
- Enterprise editionPrice not published
- Standard editionPrice not published
Microsoft SQL Server
- Standard per corePriced on request
- Standard per corePrice not published
- Standard serverPriced on request
- Standard serverPrice not published
- Standard CALPriced on request
- Standard CALPrice not published
- Enterprise pay-as-you-go$274 a month
- Developer – Standard & EnterpriseFree
- ExpressFree
- Standard pay-as-you-go$73 a month
In their own words
Firestore
Firestore is a fully managed, serverless document database for building AI, web, and mobile applications. It stores flexible JSON data and supports vector search, full-text search, geospatial queries, and ACID transactions on JSON or BSON-compatible documents. Client SDKs for Android, iOS, and web provide real-time updates and automatic syncing for offline access. Firestore can replicate data across multiple regions with strong consistency; multi-region deployments have a stated 99.999% SLA-backed availability. Integrations named for generative AI application work include Google AI Studio, remote MCP, LangChain, and LlamaIndex. Identity controls connect with Cloud IAM, Cloud Identity Platform, and Firebase Authentication. Data is encrypted before it is written to disk, with customer-managed keys available through Cloud KMS. The free quota applies to one database per project and includes 1 GiB of storage, daily read, write, and delete allowances, and 10 GiB monthly outbound transfer. New customers receive $300 in credits, separate from that quota. Server client libraries bypass Firestore Security Rules, so server access needs IAM controls.
Microsoft SQL Server
Microsoft SQL Server is a database platform for storing, processing, and securing data, offered with both deployment models and a free plan. Its Database Engine includes replication, full-text search, relational, XML, and JSON data management, as well as Python and R machine-learning services. Integration Services provides graphical tools and programmable objects for moving and transforming data, while PolyBase can query Azure Storage, S3, and ODBC sources. SQL Server 2025 adds vector search, vector embedding generation, text chunking, and DiskANN vector indexing, and integrates with LangChain, Semantic Kernel, Entity Framework Core, Microsoft Azure, and Microsoft Fabric. Microsoft provides downloads for Windows and Linux and a SQL Server container image for Docker. Express is a free entry-level edition for learning and desktop or small server applications; its single Database Engine instance is limited to the lesser of one socket or four cores. Developer editions provide Enterprise or Standard functionality for development and testing, not production. SQL Server 2025 does not support SUSE Linux Enterprise Server.