Is InfluxDB or MongoDB better?

Neither clearly leads. InfluxDB starts at Free and MongoDB at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.

Which is cheaper, InfluxDB or MongoDB?

InfluxDB starts at Free and MongoDB at Free.

Does InfluxDB or MongoDB run on more platforms?

InfluxDB runs on Cloud, Docker, Linux, macOS, Windows, AWS, Google Cloud, Azure. MongoDB runs on Cloud (Atlas), Self-hosted, Multi-cloud (AWS, Google Cloud, Azure).

Can I use InfluxDB for free?

Both have a free tier, so you can try either at no cost before committing.

What is InfluxDB best used for?

InfluxDB is most often used for monitoring, iot data, financial data, log analytics. Of those, monitoring and iot data are not what MongoDB is typically brought in for.

What can InfluxDB do that MongoDB cannot?

InfluxDB covers Time-series Storage, Flux Query Language, High Write Throughput, Data Compression. MongoDB covers Document model, Distributed architecture, ACID transactions, Real-time analytics.

Logging · head to head

InfluxDB vs MongoDB

InfluxDB

Logging

Purpose-built time series database for metrics and events

From: Free
Rated: -

Full review Website

MongoDB

Technology

The developer data platform

From: Free
Rated: -

Full review Website

The short version

Each has a real cost: InfluxDB high-cardinality data causes memory pressure and performance degradation; MongoDB 16 MB maximum document size limits large single objects
They diverge on capability: InfluxDB covers Time-series Storage, MongoDB covers Document model.
Prices and features above were last checked on 30 August 2026.

Where they differ

Only the attributes on which InfluxDB and MongoDB actually diverge.

Attributes where InfluxDB and MongoDB differ
Attribute	InfluxDB	MongoDB
Platforms	Cloud, Docker, Linux, macOS, Windows, AWS, Google Cloud, Azure	Cloud (Atlas), Self-hosted, Multi-cloud (AWS, Google Cloud, Azure)
Category	Logging	Technology
Founded	2012	2007

Identical on both: starting price (Free), pricing model (Unknown), free tier (Yes), user rating (Not yet rated).

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 InfluxDB

Time-series Storage
Flux Query Language
High Write Throughput
Data Compression
Retention Policies
Continuous Queries
Built-in Dashboards
Telegraf

Only in MongoDB

Document model
Distributed architecture
ACID transactions
Real-time analytics
Full-text search
Time series data
Geospatial queries
Aggregation framework

What people use each for

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

InfluxDB

Monitoringnot MongoDB
IoT datanot MongoDB
Financial datanot MongoDB
Log analyticsnot MongoDB
Observabilitynot MongoDB

MongoDB

Mobile applicationsnot InfluxDB
Content managementnot InfluxDB
Real-time analyticsnot InfluxDB
IoT applicationsnot InfluxDB
Gaming backendsnot InfluxDB

Where each one falls short

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

InfluxDB

High-cardinality data causes memory pressure and performance degradation
No support for joins or transactions like relational databases
Queries limited to 72-hour window in InfluxDB 3 OSS Core
Clustering and authentication features absent from community version

MongoDB

16 MB maximum document size limits large single objects
No native JOIN support for relational data operations
Higher memory usage due to storing field names with each document
Eventual consistency in distributed deployments can cause data stale reads

Pricing, plan by plan

InfluxDB

Free

Cloud Serverless FreeFree
- 5 MB writes per 5 minutes
- 300 MB queries per 5 minutes
- 30 day retention
Cloud Serverless Usage-Based$undefined/mo
- 0.0025 USD per MB ingested
- 0.012 USD per 100 queries
- 0.002 USD per GB-hour storage

MongoDB

Free

M0Free
- 512 MB storage
- Learning and exploration
M2$9/month
- 2 GB storage
- Development and testing
M5$25/month
- 5 GB storage
M10+$56.94/month
- Dedicated clusters for production

Which should you pick?

Choose InfluxDB if

You need time-series storage.
You want to start without paying.
You work on Cloud, Docker, Linux, macOS, Windows, AWS, Google Cloud, Azure.
You also want flux query language.

InfluxDB review

Choose MongoDB if

You need document model.
You want to start without paying.
You work on Cloud (Atlas), Self-hosted, Multi-cloud (AWS, Google Cloud, Azure).
You also want distributed architecture.

MongoDB review

Questions people ask

Is InfluxDB or MongoDB better?: Neither clearly leads. InfluxDB starts at Free and MongoDB at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, InfluxDB or MongoDB?: InfluxDB starts at Free and MongoDB at Free.
Does InfluxDB or MongoDB run on more platforms?: InfluxDB runs on Cloud, Docker, Linux, macOS, Windows, AWS, Google Cloud, Azure. MongoDB runs on Cloud (Atlas), Self-hosted, Multi-cloud (AWS, Google Cloud, Azure).
Can I use InfluxDB for free?: Both have a free tier, so you can try either at no cost before committing.
What is InfluxDB best used for?: InfluxDB is most often used for monitoring, iot data, financial data, log analytics. Of those, monitoring and iot data are not what MongoDB is typically brought in for.
What can InfluxDB do that MongoDB cannot?: InfluxDB covers Time-series Storage, Flux Query Language, High Write Throughput, Data Compression. MongoDB covers Document model, Distributed architecture, ACID transactions, Real-time analytics.

Answered from the vendors’ own pages

InfluxDB: Is there a free tier and what are the limits?

InfluxDB 3 Core OSS is free forever for local development and prototyping. Cloud Serverless free tier includes 5 MB writes per 5 minutes, 300 MB queries per 5 minutes, 30 day retention, and 2 databases.

Source

MongoDB: Does MongoDB offer a free tier?

Yes. MongoDB Atlas offers an M0 free tier with 512 MB storage for learning and exploration, plus paid options starting at $9/month for M2 with 2 GB storage.

Source

InfluxDB: Can I self-host InfluxDB?

Yes, InfluxDB 3 Core is fully open source and can be self-hosted with no license required. InfluxDB 3 Enterprise is self-managed and includes a 30-day free trial.

Source

MongoDB: Can I self-host MongoDB?

Yes. You can run MongoDB Community Edition on your own servers, or use MongoDB Enterprise Advanced for self-managed production deployments with enterprise features.

Source

InfluxDB: What are the series cardinality limitations?

InfluxDB is sensitive to high-cardinality data. High cardinality increases RAM usage and can trigger out-of-memory errors, making it unsuitable for some workloads with many unique tag combinations.

Source

MongoDB: What is the maximum document size in MongoDB?

Documents are limited to 16 MB. For documents exceeding this limit, you can use MongoDB's GridFS API to store files larger than the maximum size.

Source

InfluxDB: Does InfluxDB support SQL queries?

InfluxDB has limited SQL support. Full SQL is available in InfluxDB 3, but earlier versions support only specific SQL commands and use InfluxQL as the primary query language.

Source

MongoDB: Does MongoDB support ACID transactions?

Yes. MongoDB supports ACID transactions within a single document by default, and multi-document ACID transactions are available for replica sets and sharded clusters in MongoDB 4.0+.

Source

InfluxDB: Can I export my data from InfluxDB?

Yes, data can be exported from InfluxDB using query results. However, the process and supported formats depend on the version and deployment type you are using.

Source

InfluxDB vs MongoDB

InfluxDB

MongoDB

The short version

Where they differ

What each one covers

Only in InfluxDB

Only in MongoDB

What people use each for

InfluxDB

MongoDB

Where each one falls short

InfluxDB

MongoDB

Pricing, plan by plan

InfluxDB

MongoDB

Which should you pick?

Choose InfluxDB if

Choose MongoDB if

Questions people ask

Answered from the vendors’ own pages

Related pages

More on InfluxDB

More on MongoDB

Keep looking

Other head to heads