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MongoDB Atlas vs Neon
Comparing two database platforms on pricing, features, free tier, and trade-offs.
Quick summary
MongoDB Atlas — Multi-cloud developer data platform. MongoDB Atlas is the managed cloud service for MongoDB with global clusters, search, and vector capabilities.
Neon — Serverless Postgres. Neon is a serverless Postgres platform with branching, autoscaling, and a generous free tier.
Feature comparison
| Feature | MongoDB Atlas | Neon |
|---|---|---|
| Pricing model | Freemium | Freemium |
| Starting price | $9/mo | $19/mo |
| Free tier | Yes | Yes |
| Open source | No | Yes |
| Engine | MongoDB (NoSQL) | PostgreSQL |
| Branching | No | Yes |
| Free Tier | M0 cluster 512MB | 0.5GB storage |
| Serverless | Yes | Yes |
| Scale-to-zero | No | Yes |
| Point-in-time Recovery | Yes | Yes |
MongoDB Atlas
Multi-cloud developer data platform
Pros
- Flexible document model
- Mature ecosystem
- Atlas Search and Vector Search built-in
Cons
- Can get expensive fast
- Eventual consistency caveats
Neon
Serverless Postgres
Pros
- Git-like branching for databases
- Scale-to-zero saves money
- Standard Postgres
Cons
- Cold starts after scale-to-zero
- Younger platform vs RDS
Which should you choose?
Choose MongoDB Atlas if a free tier is important for your stage. Choose Neon if you value open source and want the option to self-host, and a free tier is important for your stage.
Frequently asked questions
Which is better, MongoDB Atlas or Neon?
There is no universal “better.” For most teams, Neon is the safer default because Neon is open source, which means you can self-host and avoid vendor lock-in. MongoDB Atlas is proprietary. For edge cases, the comparison table above highlights where each tool wins.
Is MongoDB Atlas cheaper than Neon?
MongoDB Atlas starts at $9/mo, while Neon starts at $19/mo. Exact costs depend on usage — check both vendors' calculators before committing.
Can I migrate from MongoDB Atlas to Neon?
Migration difficulty depends on how deeply MongoDB Atlas-specific features (APIs, SDK conventions, data schemas) are baked into your app. Most database migrations take days to weeks. Both vendors typically publish migration guides — check their docs.
Is MongoDB Atlas or Neon open source?
Neon is open source; MongoDB Atlas is a proprietary managed service.
Does MongoDB Atlas or Neon have a free tier?
Both MongoDB Atlas and Neon offer a free tier.
Which is best for startups and indie hackers?
Startups usually optimize for the lowest friction to ship and the cheapest possible free tier. The one with the most generous free tier here is Neon. For production workloads, revisit the trade-offs in the feature table above.