Neon vs MongoDB Atlas
Neon is a serverless Postgres database platform that separates storage and compute so databases scale to zero when idle, with instant copy-on-write branching for creating full database copies for development or testing. MongoDB Atlas is MongoDB Inc's managed cloud service for the MongoDB document database, running on AWS, Azure or Google Cloud, offering a permanently free M0 tier plus usage-based dedicated clusters. Choose Neon if your data is relational and you want Postgres with branching; choose MongoDB Atlas if your data model fits documents or you want a permanently free tier with no pausing.
Facts checked on against the official sources listed at the end. Usage numbers update daily.
Best for
Relational Postgres workloads that want scale-to-zero compute and instant branching
Free plan.
Best for
Document-oriented data with a permanently free tier and multi-cloud choice
Free plan. Paid from about $0.011 an hour (up to $30 a month) for the Flex tier, or $0.08 an hour for the smallest Dedicated (M10) tier.
Neon vs MongoDB Atlas at a glance
| Compared on | Neon | MongoDB Atlas |
|---|---|---|
| Data model | Relational (Postgres) | Document-oriented (BSON/JSON-like), flexible schema |
| Free plan durability | Free plan available; usage-based beyond included compute hours | M0 tier is free forever, no pausing |
| Database branching | Instant, copy-on-write branching for full database copies | No built-in equivalent |
| Scale-to-zero compute | Yes, core feature | Not offered in the same sense; Flex and Dedicated tiers run continuously |
| Cloud providers | Hosted on AWS | AWS, Azure or Google Cloud, selectable per cluster |
| Search add-ons | Postgres full-text search and pgvector extension | Atlas Search and Atlas Vector Search available as dedicated add-ons |
| Open source | Yes, Apache-2.0 (core storage engine) | No, Server Side Public License (SSPL) for MongoDB itself; Atlas is a proprietary managed service |
| Free plan | Yes: 0.5 GB storage and 100 compute hours a month per project, no credit card required | Yes: the M0 tier, free forever, with 512 MB storage, shared RAM and vCPU |
| Paid plans from | Not listed | about $0.011 an hour (up to $30 a month) for the Flex tier, or $0.08 an hour for the smallest Dedicated (M10) tier |
| Made by | Neon, Inc. (a Databricks company) | MongoDB, Inc. |
| Launched | 2021 | Not listed |
What's the difference between Neon and MongoDB Atlas?
Neon's signature feature is instant, copy-on-write database branching for creating full development
Neon's signature feature is instant, copy-on-write database branching for creating full development or preview copies; MongoDB Atlas has no direct equivalent, though it supports other workflow tools for managing environments.
Neon's compute scales to zero automatically when idle and resumes on the
Neon's compute scales to zero automatically when idle and resumes on the next query, which can reduce costs for intermittent workloads; MongoDB Atlas's Flex and Dedicated tiers run continuously rather than scaling compute to zero.
MongoDB Atlas lets you choose AWS, Azure or Google Cloud per cluster
MongoDB Atlas lets you choose AWS, Azure or Google Cloud per cluster; Neon is hosted on AWS.
Neon's relational Postgres model suits structured data with joins and transactions
Neon's relational Postgres model suits structured data with joins and transactions; MongoDB Atlas's flexible document model is often easier to evolve without migrations, at the cost of enforced structure.
Neon vs MongoDB Atlas pricing
Neon has a free plan (0.5 GB storage, 100 compute hours/month) and usage-based Launch and Scale plans billed hourly. MongoDB Atlas has a permanently free M0 tier, a low-cost Flex tier from about $0.011 an hour, and Dedicated tiers from $0.08 an hour.
Neon
Free: 0.5 GB storage and 100 compute hours a month per project. Launch and Scale: usage-based, billed hourly for compute and storage, with more autoscaling, storage and features at each tier.
- Free
- $0 a month
- Launch
- Usage-based, billed hourly
- Scale
- Usage-based, billed hourly
MongoDB Atlas
M0 free tier: 512 MB storage, shared RAM/vCPU, no pausing. Flex from about $0.011 an hour (up to ~$30/month). Dedicated M10 from $0.08 an hour (about $57/month), scaling to M300 at $21.85 an hour.
- M0 (Free)
- $0
- Flex
- From $0.011 an hour, up to about $30 a month
- Dedicated M10
- $0.08 an hour (about $56.94 a month)
- Dedicated M300
- $21.85 an hour
Prices in USD from the official pricing pages on 30 September 2026. They change often, so confirm on neon.com and mongodb.com before you commit.
Usage and activity
MongoDB Atlas has 23% more GitHub stars than Neon (28.6k against 23.2k). Weekly npm downloads: 5.2M for @neondatabase/serverless and 18M for mongodb.
| Measure | Neon | MongoDB Atlas |
|---|---|---|
| GitHub stars | 23,210 | 28,642 |
| npm downloads a week | 5.2M (@neondatabase/serverless) | 18M (mongodb) |
| Latest release | release-proxy-88…, 1 year ago | None on GitHub |
From the public GitHub and npm APIs, updated daily. Stars and downloads show developer interest, not product quality.
Should you choose Neon or MongoDB Atlas?
Choose Neon if
- Your data is relational and benefits from Postgres's structure and joins
- You want instant database branching for previews, tests or development copies
- You want compute that scales to zero and back up automatically to control cost
- You're building on AWS specifically
Choose MongoDB Atlas if
- Your data model is naturally document-shaped or needs a flexible, evolving schema
- You want a permanently free tier with no compute-hour limits or pausing
- You want your database provider to run on AWS, Azure or Google Cloud specifically
- You need dedicated search or vector search add-ons tightly integrated with the database
Switching between Neon and MongoDB Atlas
Moving from Neon to MongoDB Atlas means converting relational tables into a document schema, typically denormalizing related tables into embedded documents or arrays, and giving up Neon's copy-on-write branching workflow. Moving from MongoDB Atlas to Neon means designing normalized relational tables from your document collections and gaining Postgres's relational features plus instant database branching.
Neon vs MongoDB Atlas: common questions
Does MongoDB Atlas offer branching like Neon?
Not in the same form. Neon's instant, copy-on-write database branching creates full copies of a Postgres database for development or testing; MongoDB Atlas has no direct equivalent feature.
Is MongoDB Atlas's free tier permanent?
Yes, the M0 tier is free forever with no time limit, though it's capped at 512 MB of storage and shared compute. Neon's free plan instead includes 100 compute hours a month, after which further usage may require a paid plan.
Does Neon support scale-to-zero the way described?
Yes, this is one of Neon's core features: compute automatically scales down to zero when a database is idle and resumes on the next incoming query, which MongoDB Atlas's Flex and Dedicated tiers don't offer in the same way.
Can I choose my cloud provider with Neon?
Neon is hosted on AWS. MongoDB Atlas offers a choice of AWS, Azure or Google Cloud per cluster, which matters if you need to match a specific cloud provider for compliance or existing infrastructure.
Which is cheaper for a small side project?
Both have workable free tiers for small projects: Neon's free plan includes 100 compute hours a month, while MongoDB Atlas's M0 tier runs indefinitely with no compute-hour cap, though it's capped at 512 MB storage.
Other options to consider
All databases tools
Supabase
Open source Postgres development platform with auth, instant APIs, realtime, storage and edge functions.
Redis
In-memory data store used as a cache, database and message broker, available self-hosted or as Redis Cloud.
Firebase
Google's backend-as-a-service platform for mobile and web apps: database, auth, hosting and functions.
Pocketbase
Open source backend in a single executable file, with a database, auth and storage built in.
Sources
More sources for each tool are on the Neon and MongoDB Atlas pages.
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