Amazon DocumentDB pricing
MongoDB · Amazon Web Services · snapshot captured June 2026
Amazon DocumentDB is a managed MongoDB offering from Amazon Web Services. It uses instance-hour + storage + i/o (mongodb-compatible). Its representative entry tier is db.t3.medium (2 vCPU / 4 GiB) at ~$80/mo. Standard: $0.10/GB-month + $0.20/million I/O. I/O-Optimized: $0.30/GB-month, no per-I/O charge. Free tier: No permanent free tier; a 30-day trial (750 hours db.t3.medium + 30M I/Os + 5 GB) for new accounts. Prices are a June-2026 snapshot; verify on the linked vendor pricing page before relying on them.
Source: Amazon Web Services pricing. Data as of June 2026.
Amazon DocumentDB pricing tiers
| Tier | Specs | Hourly | Monthly | Notes |
|---|---|---|---|---|
| db.t3.medium | 2 vCPU (burstable) / 4 GiB | $0.11/hr | ~$80/mo | Entry instance; burstable. |
| db.r6g.large | 2 vCPU / 16 GiB (Graviton2) | $0.23/hr | ~$164/mo | Memory-optimized production instance. |
| Elastic Clusters | Sharded, per-vCPU | $0.13/hr | $0.13/hr | $0.132/vCPU-hour + $0.30/GB-month storage. |
Source: Amazon Web Services pricing. Prices are a June-2026 snapshot; verify on the linked vendor pricing page before relying on them.
At a glance
| Cost factor | Amazon DocumentDB |
|---|---|
| Engine | MongoDB |
| Vendor | Amazon Web Services |
| Pricing model | Instance-hour + storage + I/O (MongoDB-compatible) |
| Representative tier | db.t3.medium (2 vCPU / 4 GiB) (~$80/mo) |
| Storage / extras | Standard: $0.10/GB-month + $0.20/million I/O. I/O-Optimized: $0.30/GB-month, no per-I/O charge. |
| Free tier | No permanent free tier; a 30-day trial (750 hours db.t3.medium + 30M I/Os + 5 GB) for new accounts. |
| Region note | US East (N. Virginia), on-demand; Standard vs I/O-Optimized storage configs. |
Source: Amazon Web Services pricing page. Data as of June 2026.
Cost pros & cons
Where DocumentDB saves money
- MongoDB API compatibility without managing MongoDB yourself
- Storage and I/O scale automatically; I/O-Optimized caps per-I/O cost
- Tight AWS integration (VPC, IAM, CloudWatch)
Watch-outs
- No free tier (30-day trial only)
- Not 100% MongoDB feature-compatible (some operators/aggregations differ)
- Standard config's per-I/O charge can surprise on read-heavy workloads
Accuracy note: db.t3.medium (~$0.11/hr) and db.r6g.large (~$0.225/hr) are from third-party trackers; the AWS page leads with a db.r5.large example. Storage/I/O rates are from the official page.
Amazon DocumentDB vs similar offerings
How Amazon DocumentDB compares with other managed MongoDB and adjacent offerings:
| Offering | Engine | Representative tier | Est. monthly |
|---|---|---|---|
| Amazon DocumentDB (this offering) | MongoDB | db.t3.medium (2 vCPU / 4 GiB) | ~$80/mo |
| MongoDB Atlas | MongoDB | M10 (2 GB RAM) | ~$57/mo |
| Amazon RDS for MySQL | MySQL | db.t3.medium (2 vCPU / 4 GiB) | ~$52/mo |
| Google Cloud SQL for MySQL | MySQL | 2 vCPU / 8 GB (Enterprise edition, compute only) | ~$101/mo |
| Azure Database for MySQL | MySQL | D2ds_v5 (2 vCore / 8 GiB, compute only) | ~$125/mo |
| PlanetScale | MySQL | PS-10 (smallest realistic production cluster) | ~$39/mo |
Frequently asked questions
How much does Amazon DocumentDB cost?
Amazon DocumentDB uses instance-hour + storage + i/o (mongodb-compatible). Its representative entry is db.t3.medium (2 vCPU / 4 GiB) at ~$80/mo. Standard: $0.10/GB-month + $0.20/million I/O. I/O-Optimized: $0.30/GB-month, no per-I/O charge. snapshot captured June 2026 — verify on the vendor's pricing page.
Does Amazon DocumentDB have a free tier?
Yes. No permanent free tier; a 30-day trial (750 hours db.t3.medium + 30M I/Os + 5 GB) for new accounts.
What is the cheapest Amazon DocumentDB tier?
The smallest tier is db.t3.medium (2 vCPU (burstable) / 4 GiB): ~$80/mo. Entry instance; burstable. Prices are a June-2026 snapshot; verify on the linked vendor pricing page before relying on them.
What should I watch for in Amazon DocumentDB pricing?
Watch-outs: No free tier (30-day trial only); Not 100% MongoDB feature-compatible (some operators/aggregations differ); Standard config's per-I/O charge can surprise on read-heavy workloads. db.t3.medium (~$0.11/hr) and db.r6g.large (~$0.225/hr) are from third-party trackers; the AWS page leads with a db.r5.large example. Storage/I/O rates are from the official page.
Keep exploring
Source & accuracy
Figures are a dated snapshot from Amazon Web Services's pricing page (snapshot captured June 2026). Managed-database pricing is volatile and varies by region, tier, storage and discounts — verify current prices on the vendor's page before purchasing. This is an informational comparison, not a quote. See our methodology and disclaimer.
Last updated: 2026-06-20