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Databases · head to head

CosmosDB vs Nile

CosmosDB logo

CosmosDB

Databases

Globally distributed, multi-model database service from Azure

From
Free
Rated
-
Full reviewWebsite
Nile logo

Nile

Databases

PostgreSQL database platform built for multi-tenant SaaS applications

From
Free
Rated
-
Full reviewWebsite

The short version

  • Each has a real cost: CosmosDB autoscale provisioned throughput enforces a minimum of 1,000 RU/s, billed hourly whether or not the database is used; Nile limited to B2B SaaS use cases, not optimized for single-tenant applications
  • They diverge on capability: CosmosDB covers Global Distribution, Nile covers Multi-tenant virtualization.
  • Prices and features above were last checked on 30 August 2026.

Where they differ

Only the attributes on which CosmosDB and Nile actually diverge.

Attributes where CosmosDB and Nile differ
AttributeCosmosDBNile
Pricing modelusage-basedPay-per-use with committed pricing
PlatformsWeb, AzureWeb, API
Founded1975Unknown

Identical on both: starting price (Free), free tier (Yes), user rating (Not yet rated), category (Databases).

What each one covers

Drawn from each product's published feature list. An absence here means we hold no record of it - not that the product lacks it.

Only in CosmosDB

  • Global Distribution
  • Multi-model APIs
  • Elastic Scaling
  • Five Consistency Levels
  • SLA-backed Latency
  • Automatic Indexing
  • Serverless
  • Azure Functions

Only in Nile

  • Multi-tenant virtualization
  • Serverless compute
  • Vector embeddings
  • Tenant branching
  • Schema migration
  • Tenant dashboards
  • Global deployment
  • PostgreSQL compatible

What people use each for

The jobs each tool is most often brought in to do.

CosmosDB

  • Running a globally distributed multi model database on Azurenot Nile
  • Serving low latency reads and writes from multiple Azure regionsnot Nile
  • Storing document, key value and graph data behind a managed servicenot Nile

Nile

  • Multi-tenant SaaS applications with per-customer isolationnot CosmosDB
  • Serverless workloads needing cost-efficient auto-scalingnot CosmosDB
  • RAG applications leveraging vector embeddingsnot CosmosDB
  • Applications requiring per-tenant analytics dashboardsnot CosmosDB
  • Cross-customer analytics using shared data tablesnot CosmosDB

Where each one falls short

Documented limitations, not opinions. Every one is a constraint you would hit in normal use.

CosmosDB

  • Autoscale provisioned throughput enforces a minimum of 1,000 RU/s, billed hourly whether or not the database is used
  • Provisioned throughput is charged in every region the account is replicated to, so multi region accounts multiply the RU bill
  • Storage charges cover data, indexes and backups in each replicated region
  • Egress out of Azure and between regions is charged, though ingress is free
  • The free allowance is one account per Azure subscription, limited to 1,000 RU/s and 25 GB
  • RU/s rates vary by region and are only shown through the pricing calculator rather than a flat published rate

Nile

  • Limited to B2B SaaS use cases, not optimized for single-tenant applications
  • Query token abstraction makes pricing less transparent than traditional compute pricing
  • Free plan limited to 50M query tokens and 1GB storage for development
  • Serverless startup latency may impact performance-sensitive applications
  • Per-million token overages require careful monitoring to avoid surprise costs

Pricing, plan by plan

CosmosDB

Free
  • Free TierFree
    • 1000 RU/s
    • 25GB storage
    • First 12 months
  • ServerlessFree
    • Pay per request
    • Auto-scaling
    • Event-driven workloads

Nile

Free
  • FreeFree
    • 50M query tokens included
    • 1 GB storage
    • 500 connections
  • Pro$15/month
    • 150M query tokens included
    • 5 GB storage
    • 10,000 connections
  • Scale$350/month
    • 500M query tokens included
    • 50 GB storage
    • 100,000 connections
  • Enterprise$undefined/custom
    • Custom resource allocation
    • Large-scale workloads supporting millions of tenants
    • Designated support

Which should you pick?

Choose CosmosDB if

  • You need global distribution.
  • You want to start without paying.
  • You work on Web, Azure.
  • You also want multi-model apis.
CosmosDB review

Choose Nile if

  • You need multi-tenant virtualization.
  • You want to start without paying.
  • You work on Web, API.
  • You also want serverless compute.
Nile review

Questions people ask

Is CosmosDB or Nile better?
Neither clearly leads. CosmosDB starts at Free and Nile at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, CosmosDB or Nile?
CosmosDB starts at Free and Nile at Free.
Does CosmosDB or Nile run on more platforms?
CosmosDB runs on Web, Azure. Nile runs on Web, API.
Can I use CosmosDB for free?
Both have a free tier, so you can try either at no cost before committing.
What is CosmosDB best used for?
CosmosDB is most often used for running a globally distributed multi model database on azure, serving low latency reads and writes from multiple azure regions, storing document, key value and graph data behind a managed service. Of those, running a globally distributed multi model database on azure and serving low latency reads and writes from multiple azure regions are not what Nile is typically brought in for.
What can CosmosDB do that Nile cannot?
CosmosDB covers Global Distribution, Multi-model APIs, Elastic Scaling, Five Consistency Levels. Nile covers Multi-tenant virtualization, Serverless compute, Vector embeddings, Tenant branching.

Answered from the vendors’ own pages

CosmosDB: Is there a free tier for Azure Cosmos DB?

Yes, Cosmos DB offers a free tier with 1,000 RU/s of throughput and 25 GB of storage per month for the lifetime of the account, available to new accounts.

Source
Nile: What are query tokens and how are they calculated?

Query tokens are abstract units of CPU and memory used when queries execute on Nile's serverless compute. The platform uses this abstraction to enable fair, predictable pay-per-use pricing.

Source
CosmosDB: How is Cosmos DB priced after the free tier?

Cosmos DB uses three billing models: provisioned throughput billed per request unit per second, vCore pricing for certain APIs, or serverless consumption pricing where you pay only for requests processed. Reserved capacity offers 20% discount for one year or 30% for three years.

Source
Nile: Do all Nile plans include multi-tenant isolation?

Yes. All plans including the free tier include unlimited databases, tenants, and vector embeddings with built-in data isolation.

Source
CosmosDB: Can I change my pricing model after choosing one?

No. Once you select a compute pricing model and API, they cannot be changed. This choice is permanent for that database.

Source
Nile: What is included in the Pro plan?

The Pro plan ($15/month) includes 150M query tokens, 5GB storage, 10,000 connections, and a 99.95% SLA. SAML and MFA authentication features are available on Pro and above.

Source
CosmosDB: Is there a trial period for Cosmos DB beyond the free tier?

Azure offers a 30-day free trial account for all Azure services. Additionally, Azure AI customers may be eligible for a 90-day free Cosmos DB subscription through the Azure AI Advantage program.

Source
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