AI Perks curates and provides access to exclusive discounts, credits, and deals on AI tools, cloud services, and APIs to help startups and developers save money.
What does the MongoDB Atlas free tier give students?
The MongoDB Atlas free tier is one Free cluster per project, with 512 MB of storage and no expiry. Students who need more room can open the $25,000 in MongoDB credits card to see who qualifies and how to claim.
The Free cluster was formerly called M0, so older tutorials and forum posts use that name. Free clusters never expire, and the tier costs nothing. MongoDB positions it for learning MongoDB, prototyping and other workloads that fit inside its limits, which describes most coursework and side projects.
You can deploy one Free cluster per Atlas project. Deployment is estimated at about 3 minutes, and you can create the cluster through the Atlas CLI, the web UI or the Admin API. AI Perks also tracks more student offers beyond this one, so the catalogue is worth a look before your project outgrows the free tier.
Top AI Credits for Startups
Apply directly through these verified programs.
MongoDB $25,000
Eligible for early-stage startups
ChatGPT $80
Eligible for early-stage startups
Google Gemini $240
Eligible for early-stage startups
GitHub Up to $120
Eligible for early-stage startups
Notion $120
Eligible for early-stage startups
Figma $1,080
Eligible for early-stage startups
What are the real limits of an Atlas free cluster?
The limits are small but clear, and most of them only matter once a project grows. Here are the numbers that decide whether your project fits.
| Limit | Free cluster |
|---|---|
| Storage (documents plus indexes) | 512 MB (0.5 GB cap) |
| Operations per second | 100 |
| Data transfer | 10 GB in and 10 GB out per period |
| Replication factor | 3 nodes, fixed |
| Aggregation pipeline stages | 50 maximum |
| Document nesting | 50 levels maximum |
| MongoDB version | 8.0, cannot be upgraded |
The storage cap counts the uncompressed BSON documents in all collections plus their indexes. That matters for students because a few heavy indexes can eat the budget faster than the raw data does. Storage size cannot be configured, and a Free cluster does not auto-expand when it fills up.
You can read MongoDB's own list on the Free cluster limitations page.
What can you not do on a Free cluster?
Several features are simply off the table. Knowing them early saves you from rebuilding a project the night before a deadline.
- No sharding. You cannot deploy a Free cluster as a sharded cluster.
- No server-side JavaScript. Free clusters do not support it.
- No temporary files on disk. Aggregations and queries cannot spill to disk, so memory-heavy pipelines can fail.
- Limited authentication. Only Password (SCRAM-SHA1), X.509 certificates and AWS IAM are supported.
- No version upgrades. The cluster stays on MongoDB 8.0.
Flex clusters add features that Free clusters lack, though the exact feature list lives in MongoDB's documentation. Choosing Atlas Infinite or Atlas Core when you create a cluster does not change how a Free or Flex cluster runs.
Top AI Credits for Startups
Apply directly through these verified programs.
MongoDB $25,000
Eligible for early-stage startups
ChatGPT $80
Eligible for early-stage startups
Google Gemini $240
Eligible for early-stage startups
GitHub Up to $120
Eligible for early-stage startups
Notion $120
Eligible for early-stage startups
Figma $1,080
Eligible for early-stage startups
When should you move from Free to Flex or Dedicated?
Move up when you hit the 512 MB storage cap, the 100 operations per second ceiling, or a missing feature. A Free cluster can be scaled up to a Flex or dedicated cluster at any time, so you do not need to start over.
| Free | Flex | Dedicated (M10+) | |
|---|---|---|---|
| Cost | $0 | $8 to $30 per 30 days (capped at $30 per month) | Starts at $60 per month |
| Storage | 512 MB | 5 GB | 10 to 4000 GB |
| Operations per second | 100 | Pricing tiers apply up to 500 | Not published in the sources used here |
Flex storage is capped at 5 GB, and after that you need a Dedicated cluster. The Flex pricing tiers apply only up to 500 operations per second.
One historical note: as of January 22, 2026, Atlas no longer supports M2 and M5 clusters or Serverless instances. M2 and M5 clusters were migrated to Flex. If a tutorial tells you to pick M2 or M5, it is out of date.
Where do bigger credits come from?
Paying $8 to $60 a month on a student budget is a stretch, which is why credits matter. The AI Perks catalogue lists database and hosting credits that can cover the jump from a Free cluster to something larger, and each row links to that perk's card.
| Company | Free credits | How to get |
|---|---|---|
| MongoDB | $25,000 | Get this perk |
| Supabase | $500 | Get this perk |
| Vercel | $850,000 | Get this perk |
Total across these three perks: $25,000 + $500 + $850,000 = $875,500
Each card shows who qualifies and how to claim, so you do not need to hunt through vendor sites. The full catalogue holds many more database, hosting and AI credits, and the student and education cards are the best place to start. For a wider view of student offers, see Free AI Credits for Students 2026: Every Program Compared and GitHub Student Developer Pack 2026: What Is Inside.
Top AI Credits for Startups
Apply directly through these verified programs.
MongoDB $25,000
Eligible for early-stage startups
ChatGPT $80
Eligible for early-stage startups
Google Gemini $240
Eligible for early-stage startups
GitHub Up to $120
Eligible for early-stage startups
Notion $120
Eligible for early-stage startups
Figma $1,080
Eligible for early-stage startups
How do you start with Atlas for free? Step by step
Follow this order and you will have a working database today, with credits lined up for when you outgrow it.
Step 1: Get credits through AI Perks
Open the AI Perks catalogue and look at the student and education cards. Start with the MongoDB card, which lists the $25,000 amount along with who qualifies and how to claim.
Step 2: Deploy your Free cluster
Create the cluster in the Atlas UI, the Atlas CLI or the Admin API. MongoDB estimates about 3 minutes. Remember that each project gets only one Free cluster, so name your projects clearly.
Step 3: Plan around the 512 MB cap
Keep documents lean and index only what your queries need, since indexes count toward the 0.5 GB. Do not rely on auto-expansion, because Free clusters do not offer it.
Step 4: Watch operations and transfer
Stay under 100 operations per second and 10 GB in and 10 GB out per period. Batch writes in seed scripts and avoid tight polling loops in demos.
Step 5: Scale when the project earns it
When storage or throughput becomes the bottleneck, scale to Flex or a Dedicated cluster. Use your credits so the upgrade does not come out of your own pocket.
FAQ
Is the MongoDB Atlas free tier really free forever?
Yes, within its limits. Free clusters never expire and cost nothing, and MongoDB aims the tier at learning and prototyping. The trade-off is the caps: 512 MB of storage, 100 operations per second and a fixed MongoDB 8.0 version. Browse student perk cards at getaiperks.com for larger budgets.
How many free clusters can I create?
You can deploy one Free cluster per Atlas project. Users who have sales contracts with MongoDB might be able to deploy more per project, but a student account should plan on one. If you need several databases, create separate projects, or check the MongoDB credits card for a bigger setup.
What happens when my free cluster fills up?
Free clusters cap storage at 0.5 GB, counting both documents and indexes, and they do not auto-expand. You cannot configure the size either. When you approach the cap, scale up to Flex (5 GB) or a Dedicated cluster, which holds 10 to 4000 GB.
Is M0 the same as the Atlas free cluster?
Yes. Free clusters were formerly known as M0 clusters, so tutorials that mention M0 describe today's Free cluster. M2 and M5 clusters, by contrast, are gone: Atlas stopped supporting them as of January 22, 2026, and they were migrated to Flex.
How much does it cost after the free tier?
Flex clusters cost between $8 and $30 for 30 days of usage, capped at $30 per month. Dedicated clusters (M10+) start at $60 per month. Credits can offset these costs, and getaiperks.com lists the amounts so you can compare before you upgrade.
Can I run production workloads on the free tier?
It is not the intended use. MongoDB describes the tier for learning, prototyping and workloads that fit within the limits. With 100 operations per second, no sharding and no auto-scaling storage, a growing app will outgrow it. See AI Student Discount 2026: Every Verified Offer Listed for other student savings.
Top AI Credits for Startups
Apply directly through these verified programs.
MongoDB $25,000
Eligible for early-stage startups
ChatGPT $80
Eligible for early-stage startups
Google Gemini $240
Eligible for early-stage startups
GitHub Up to $120
Eligible for early-stage startups
Notion $120
Eligible for early-stage startups
Figma $1,080
Eligible for early-stage startups
Ready to go beyond 512 MB?
The Free cluster is a solid start for coursework, and the catalogue is where the bigger budgets are. Open the student and education perk cards to see the amounts, who qualifies and how to claim.
Get free AI credits at getaiperks.com →
Find more student-friendly database and hosting credits in the full catalogue at getaiperks.com.
