Which is cheaper, MongoDB Atlas or Supabase?

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

Does MongoDB Atlas have a free tier?

Yes, MongoDB Atlas offers a free tier with storageMB: 512.

MongoDB Atlas has significant switching cost. Supabase has drop-in switching cost. Supabase is easier to switch away from.

Database

MongoDB Atlas

← More affordable

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

Switching Cost: significant

Supabase

Open-source Firebase alternative with PostgreSQL database, authentication, realtime subscriptions, edge functions, and storage

Switching Cost: drop-in

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

Pricing philosophy differs — MongoDB Atlas charges flat-rate, but Supabase takes a usage-based approach.

If budget is your primary constraint, MongoDB Atlas is the clear winner with its more wallet-friendly pricing structure.

If budget is your primary constraint, MongoDB Atlas is the clear winner with its more wallet-friendly pricing structure.

Price Difference

2.8x

MongoDB Atlas is cheaper by $16/mo

Pricing Model

Different

Tools charge using different pricing philosophies

Switching Costs

Supabase

Lower switching costs for easier migration