Which is cheaper, Convex or MongoDB Atlas?

MongoDB Atlas is 2.8x cheaper than Convex. Convex starts at $0/mo, MongoDB Atlas starts at $0/mo.

Does Convex have a free tier?

Yes, Convex offers a free tier with developers: 6, functionCallsPerMonth: 1000000, databaseStorageGb: 0.5, fileStorageGb: 1, databaseIoGbPerMonth: 1, dataEgressGbPerMonth: 1, deployments: 40.

What is the switching cost between Convex and MongoDB Atlas?

Convex has significant switching cost. MongoDB Atlas has significant switching cost. Both have similar switching complexity.

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Convex vs MongoDB Atlas

Database

Convex

Reactive backend platform with real-time sync, server functions, and integrated database

Switching Cost: significant

MongoDB Atlas

← More affordable

Fully managed cloud database service for MongoDB with automated scaling, backups, and multi-cloud deployment

Switching Cost: significant

Analysis

The cost difference is substantial — Convex runs about 2.8x what MongoDB Atlas charges.

Their pricing models diverge: Convex uses per-seat, while MongoDB Atlas operates on a flat-rate basis.

Price-conscious teams should choose MongoDB Atlas — the cost advantage is hard to ignore, especially for growing workloads.

Bottom Line

Price-conscious teams should choose MongoDB Atlas — the cost advantage is hard to ignore, especially for growing workloads.

Price Difference

2.8x

MongoDB Atlas is cheaper by $16/mo

Pricing Model

Different

Tools charge using different pricing philosophies

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