Firebase vs MongoDB Atlas Pricing (2026)
How do these two stack up on price? Here's what each one costs, what you get, and where the value sits.
| Firebase | MongoDB Atlas | |
|---|---|---|
| Starts at | Custom | $0/mo |
| Number of plans | 2 | 3 |
| Free plan | ||
| Free trial | — | |
| Pricing model | usage-based | usage-based |
No-cost (Spark plan)
- Generous no-cost usage limits
- No payment method needed
- A/B Testing
- Analytics
- App Check
- App Distribution
- Other Authentication services
- Monthly active users
- Monthly active users - SAML/OIDC
- Cloud Firestore - Stored data
- Cloud Firestore - Network egress
- Cloud Firestore - Document writes
- Cloud Firestore - Document reads
- Cloud Firestore - Document deletes
- Cloud Messaging (FCM)
- Crashlytics
- SQL Connect - Network egress
- SQL Connect - Operation count
- SQL Connect - Cloud SQL for PostgreSQL
- Hosting - Storage
- Hosting - Data transfer
- Custom domain & SSL
- Multiple sites per project
- In-App Messaging
- Performance Monitoring
- Simultaneous connections
- Realtime Database - GB stored
- Realtime Database - GB downloaded
- Remote Config
- Virtual Device Tests
- Physical Device Tests
- Android Device Streaming
- Firebase AI Logic
- BigQuery
- Gemini in Firebase
- Firebase Studio
Pay as you go (Blaze plan)
- Access more services and higher usage levels
- If eligible, get $300 in free credit
- No-cost usage from Spark plan included*
- A/B Testing
- Analytics
- App Check
- App Distribution
- App Hosting - Outgoing bandwidth
- App Hosting - Storage
- App Hosting - Cloud Run
- App Hosting - Cloud Build
- App Hosting - Artifact Registry
- App Hosting - Cloud Logging
- App Hosting - Cloud Secrets Manager
- Phone Auth - All regions
- Other Authentication services
- Monthly active users
- Monthly active users - SAML/OIDC
- Cloud Firestore - Stored data
- Cloud Firestore - Network egress
- Cloud Firestore - Document writes
- Cloud Firestore - Document reads
- Cloud Firestore - Document deletes
- Cloud Functions - Invocations
- Cloud Functions - GB-seconds
- Cloud Functions - CPU-seconds
- Cloud Functions - Outbound networking
- Cloud Functions - Cloud Build minutes
- Cloud Functions - Container storage in Artifact Registry
- Cloud Messaging (FCM)
- Cloud Storage - GB stored (*.appspot.com)
- Cloud Storage - GB downloaded (*.appspot.com)
- Cloud Storage - Upload operations (*.appspot.com)
- Cloud Storage - Download operations (*.appspot.com)
- Cloud Storage - GB stored (*.firebasestorage.app)
- Cloud Storage - GB downloaded (*.firebasestorage.app)
- Cloud Storage - Upload operations (*.firebasestorage.app)
- Cloud Storage - Download operations (*.firebasestorage.app)
- Multiple buckets per project
- Crashlytics
- SQL Connect - Network egress
- SQL Connect - Operation count
- SQL Connect - Cloud SQL for PostgreSQL
- Hosting - Storage
- Hosting - Data transfer
- Custom domain & SSL
- Multiple sites per project
- In-App Messaging
- Performance Monitoring
- Phone number verification
- Simultaneous connections
- Realtime Database - GB stored
- Realtime Database - GB downloaded
- Multiple databases per project
- Remote Config
- Virtual Device Tests
- Physical Device Tests
- Android Device Streaming
- Firebase AI Logic
- BigQuery
- Other IaaS
- Gemini in Firebase
- Firebase Studio
Free
- 512MB of storage
- Shared RAM
- Shared vCPU
Flex
- 5GB of storage
- Shared RAM
- Shared vCPU
Dedicated
Popular- 10GB to 4TB of storage
- 2GB to 768GB RAM
- 2vCPUs to 96vCPUs
Firebase vs MongoDB Atlas FAQ
- Which one is cheaper?
- One or both use custom pricing, so it depends on your specific needs.
- Can I use either one for free?
- Both offer free plans, so you can try each without paying. Start with whichever fits your workflow better and upgrade when you hit the limits.
- How do they charge?
- Both use a usage-based model, so the comparison is straightforward — it comes down to features and limits at each price point.
- Which one is a better deal?
- Depends on what you need. Firebase: Firebase positions as the low-friction, Google-backed alternative to rolling your own backend infra — competing with Supabase, AWS Amplify, and PlanetScale. They're not the cheapest at scale (GCP pricing adds up), but the free tier is generous enough to win early-stage developers before costs become a real conversation. MongoDB Atlas: Atlas sits in the premium tier of managed databases, competing directly with AWS DocumentDB and Azure Cosmos DB, but leans on MongoDB's native compatibility as a differentiator over cloud-vendor lock-in alternatives. They're not the cheapest option — they're pitching developer experience and ecosystem depth to teams that want to avoid the friction of self-managing MongoDB.
Still deciding? See the best Firebase alternatives or the best MongoDB Atlas alternatives, ranked with verified pricing.
Keep tabs on both.
We'll monitor pricing changes for Firebase and MongoDB Atlas and let you know when something moves.