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Databases comparison · 2026
MongoDB Atlas (84) and CockroachDB (81) are closely matched — this is one of the tightest Databases comparisons in our database, with just 3 points separating them overall. MongoDB Atlas leads on Ecosystem (90 vs 75). The two are closest on Performance, where the gap is just 3 points. Both offer a free tier, making either a low-risk starting point. Use the radar chart and dimension table below to find which fits your specific priorities best.
MongoDB Atlas
The managed cloud version of the leading NoSQL database
84/100
CockroachDB
Distributed SQL that survives entire region failures
81/100
Radar comparison
MongoDB Atlas
84
CockroachDB
81
Developer UX
Branching, migrations, dashboard, and local dev experience.
Performance
Query latency and connection handling at scale.
Scalability
Auto-scaling, read replicas, and serverless scale-to-zero.
Price / Value
Free tier generosity and cost at production scale.
Reliability
Backups, point-in-time recovery, and uptime SLA.
Ecosystem
ORM support, extensions, and integration breadth.
Overall Score
Based on our independent scoring across 6 dimensions, MongoDB Atlas scores 84/100 overall versus CockroachDB's 81/100 — a 3-point margin. MongoDB Atlas leads on Scalability in particular. That said, CockroachDB may still be the right choice if the dimensions where it scores higher match your specific priorities — the radar chart above shows the full profile side by side.
Both MongoDB Atlas and CockroachDB offer a free tier, so entry-level cost is not a differentiating factor. Compare the feature and usage limits of each free plan to see which gives you more headroom before a paid upgrade is needed.
MongoDB Atlas scores higher on Ecosystem — 90/100 versus 75/100 for CockroachDB. If ecosystem is your primary decision criterion, MongoDB Atlas is the stronger choice in this head-to-head.
Switching between databases tools is generally possible but involves migration effort: exporting your data or configuration from MongoDB Atlas, re-importing or reconfiguring in CockroachDB, and updating any API integrations or environment variables in your codebase. The effort scales with how deeply embedded the tool is in your stack. Test CockroachDB on a non-production project first before migrating.
MongoDB Atlas (84/100) is the better fit for teams who prioritise scalability — its strongest dimension — and who want a free entry point. CockroachDB (81/100) is the better fit for teams who prioritise scalability and want a free entry point. If both dimensions matter equally, the overall score winner (MongoDB Atlas) is the safer default choice.
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