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Firebase vs MongoDB Atlas: free tier and first paid price (checked 2026-10-19)
Both have a free plan that stays free. Firebase Blaze: Pay as you go (no flat price shown); MongoDB Atlas Flex: $8 to $30 per month of usage. These first paid prices are not directly comparable from the list prices alone. Only MongoDB Atlas says it offers an EU region.
| Fact | Firebase | MongoDB Atlas |
|---|---|---|
| Free plan | Stays free | Stays free |
| Card for the free plan | Unknown | Unknown |
| EU region | Unknown | Yes |
| First paid plan | Blaze | Flex |
| First paid price | Pay as you go (no flat price shown) | $8 to $30 per month of usage |
| Free plan includes | No-cost (Spark) plan. Examples on the page: Authentication 50K MAU no-cost (50 MAU for SAML/OIDC), 10 GiB/month network egress no-cost on one row. Blaze is pay as you go and includes Spark no-cost usage. | Free is $0 and labeled 'Free forever'. The free cluster (M0) row shows 512 MB. |
| Free limits |
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| Paid plan note | SQL Connect: Cloud SQL for PostgreSQL has a 3 month no-cost trial (limit 1 per project), then 'starting as low as $9.37/month'. Remote Config fetch requests: no-cost up to 100,000 per day per project, then $0.06 / 10K requests (100,001 to 10,000,000 per day) and $0.01 / 10K above that; the page says this pricing takes effect starting September 1, 2026. | Page: 'Flex clusters are priced based on usage and can cost between $8 and $30 for a month's usage.' A dedicated tier example starts at $0.08/hour ($56.94/month) in the captured table. |
| EU / data region note | The pricing page does not say which locations Firebase runs in. It does say Cloud Storage no-cost quotas only apply to buckets in us-central1, us-west1 and us-east1, so an EU bucket gets no free storage quota. | Region list includes Frankfurt, Germany (eu-central-1), plus eu-west-1 and eu-west-2. |
| Last checked | ||
| Pricing page | firebase.google.com/pricing | www.mongodb.com/pricing |
Questions
Does Firebase or MongoDB Atlas have a free plan?
Firebase has a free plan that stays free; MongoDB Atlas has a free plan that stays free. Checked 2026-10-19: Firebase pricing, MongoDB Atlas pricing.
Which is cheaper to start paying for, Firebase or MongoDB Atlas?
Firebase Blaze: Pay as you go (no flat price shown); MongoDB Atlas Flex: $8 to $30 per month of usage. These first paid prices are not directly comparable from the list prices alone. Checked 2026-10-19: Firebase pricing, MongoDB Atlas pricing.
Do Firebase and MongoDB Atlas need a credit card for the free plan?
Firebase does not say whether a card is needed; MongoDB Atlas does not say whether a card is needed. Checked 2026-10-19: Firebase pricing, MongoDB Atlas pricing.
Do Firebase and MongoDB Atlas offer an EU region?
Firebase does not state an EU region; MongoDB Atlas says it offers an EU region. Checked 2026-10-19: Firebase pricing, MongoDB Atlas pricing.
Sources
- Firebase pricing page (checked 2026-10-19)
- MongoDB Atlas pricing page (checked 2026-10-19)
Every cell is copied from the official pricing pages. The verdict is generated from those fields and makes no other claims. "Unknown" means the page did not say. Prices change: check the vendor page before you buy.
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