Comparison

Azure Cosmos DB vs Google Firestore

On the evidence we track, Google Firestore leads this comparison with a composite score of 62/100. Scores are only directly comparable because these tools share a category; the full breakdown and every source is below.

Azure Cosmos DB full profile →Google Firestore full profile →

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Azure Cosmos DB49

★Google Firestore62

Attribute comparison across 2 tools
Attribute	Azure Cosmos DB	Google FirestoreLeader
Vioscale score	49 / 100low · 31%	62 / 100low · 41%
Pricing
Free tierpricing.free_tier	✓	✓
Modelpricing.model	freemium	freemium
Price levelpricing.price_level	low	low
Transparentpricing.transparent	-	✓
Integrations
Countintegrations.count	-	11
Security
Gdprsecurity.gdpr	✓	-
Reliability
Status pagereliability.status_page	✓	✓
Market
Availabilitymarket.availability	Available worldwide · HQ US	Available worldwide · HQ US

Score

Vioscale score

Azure Cosmos DB49 / 100low · 31%

Google Firestore62 / 100low · 41%

Pricing

Free tier

Azure Cosmos DB✓

Google Firestore✓

Model

Azure Cosmos DBfreemium

Google Firestorefreemium

Price level

Azure Cosmos DBlow

Google Firestorelow

Transparent

Azure Cosmos DB–

Google Firestore✓

Integrations

Count

Azure Cosmos DB–

Google Firestore11

Security

Gdpr

Azure Cosmos DB✓

Google Firestore–

Reliability

Status page

Azure Cosmos DB✓

Google Firestore✓

Market

Availability

Azure Cosmos DBAvailable worldwide · HQ US

Google FirestoreAvailable worldwide · HQ US

Capabilities

Feature-by-feature on the axes that matter for nosql databases. “-” means undocumented, not absent.

Capability comparison for NoSQL Databases
Capability	Azure Cosmos DB	Google Firestore
Core
Data model	Multi-model	Document
Query
Query language	-	MQL / document API
Consistency
Consistency	-	-
Transactions
Transactions	-	-
Indexing
Secondary indexes	-	Yes
Scale
Partitioning / sharding	-	-
Multi-region	✓	✓
Replication
Replication topology	-	-
Deployment
Hosting	Cloud only	Cloud only
Schema
Schema	Schemaless	Schemaless
Features
TTL / auto-expiry	-	-
Change streams / CDC	-	✓
Vector / search built-in	✓	-
Licensing
Licence class	Proprietary	Proprietary

Core

Data model

Azure Cosmos DBMulti-model

Google FirestoreDocument

Query

Query language

Azure Cosmos DB-

Google FirestoreMQL / document API

Consistency

Azure Cosmos DB-

Google Firestore-

Transactions

Azure Cosmos DB-

Google Firestore-

Indexing

Secondary indexes

Azure Cosmos DB-

Google FirestoreYes

Scale

Partitioning / sharding

Azure Cosmos DB-

Google Firestore-

Multi-region

Azure Cosmos DB✓

Google Firestore✓

Replication

Replication topology

Azure Cosmos DB-

Google Firestore-

Deployment

Hosting

Azure Cosmos DBCloud only

Google FirestoreCloud only

Schema

Azure Cosmos DBSchemaless

Google FirestoreSchemaless

Features

TTL / auto-expiry

Azure Cosmos DB-

Google Firestore-

Change streams / CDC

Azure Cosmos DB-

Google Firestore✓

Vector / search built-in

Azure Cosmos DB✓

Google Firestore-

Licensing

Licence class

Azure Cosmos DBProprietary

Google FirestoreProprietary

What each one is

The product in its own terms, so the numbers below have context.

Azure Cosmos DB

Azure Cosmos DB is a NoSQL database service on Azure that prioritizes minimal latency and the ability to handle massive scale. It includes built-in vector search capabilities for AI-driven applications and is managed fully by Microsoft with no infrastructure to operate.

Independently observed

Google Firestore

Leader

Cloud Firestore is a managed NoSQL document database that enables real-time data synchronization across mobile, web, and server applications globally. It supports offline access, provides built-in security rules, and seamlessly integrates with Firebase services and Google Cloud infrastructure.

Independently observed

Pricing

List pricing as published by each vendor, with the date we read it. Always verify at the source before you buy.

Azure Cosmos DB

Usage-basedFree tier

as of 2026-08-14verify ↗

Google Firestore

Leader

from $0.10/moHybridFree tier

Free Spark plan or pay-as-you-go Blaze plan from $0.10/GB storage

SparkFree
- No payment method required
- Generous no-cost usage limits
- Real-time sync
- Offline support
- Security rules
BlazePay-as-you-go: $0.10/GB storage, $0.12/GB egress after free tiers
- Access to all Firebase services
- Higher usage levels
- $300 free credit (if eligible)
- Real-time sync
- Offline support
- +2 more

as of 2026-08-14verify ↗

Platform & deployment

Where each product runs and how it can be hosted. A dash means undocumented, not unsupported.

Platform and deployment support comparison
Supports	Azure Cosmos DB	Google Firestore
WebPlatforms	✓	✓
iOSPlatforms	✗	✓
AndroidPlatforms	✗	✓
Cloud / SaaSDeployment	✓	✓

Platforms

Web

Azure Cosmos DB✓

Google Firestore✓

iOS

Azure Cosmos DB✗

Google Firestore✓

Android

Azure Cosmos DB✗

Google Firestore✓

Deployment

Cloud / SaaS

Azure Cosmos DB✓

Google Firestore✓

Integrations

What each product connects to. Counts come from the vendor's own integration directory where one exists.

Azure Cosmos DB

Not documented yet.

Google Firestore

Leader

11 total

Firebase Authentication
Firebase Cloud Messaging
Cloud Storage
BigQuery
Cloud Run
Cloud Build
Cloud Logging
Cloud Secrets Manager
Artifact Registry
Cloud Scheduler
Cloud SQL

Independently observed

Comparison generated from independently-sourced facts. Every value links to its source and retrieval date. See the method.