Model Hubs & Serving

fastFM

A library for Factorization Machines with high performance.

Status
UnmaintainedNo commits in 1981 days.
Last checked
Checked · Oct 16, 2026
License
Open source
Pricing
Free tier · from $0

What it is

FastFM is a Python library that implements Factorization Machines using stochastic gradient descent. It's designed to handle large datasets efficiently and can be used for tasks like recommendation systems, regression, and classification.

FastFM stands out with its efficient handling of large datasets and support for stochastic gradient descent optimization, making it ideal for tasks that require high performance on big data.

When it fits — and when it doesn’t

A good fit for

  • Developers working on recommendation engines who need efficient handling of large datasets.

  • Data scientists performing regression and classification tasks that require stochastic gradient descent optimization.

Look elsewhere if

  • Teams needing real-time processing capabilities as FastFM is optimized for batch processing.

  • Projects requiring a web-based UI, as it's primarily a library for local use.

Known weaknesses

Each one links to the public issue, changelog or docs page it came from, where we have one.

  1. 01

    Limited documentation and examples

    The official repository lacks detailed tutorials and example use cases, making it difficult for new users to understand how to effectively utilize the library.

  2. 02

    Narrow focus on specific machine learning tasks

    FastFM is primarily designed for Factorization Machines which limits its applicability in scenarios where other models or techniques are more suitable.

  3. 03

    Performance issues with extremely sparse datasets

    While efficient with large datasets, FastFM can exhibit performance degradation when dealing with very sparse data matrices due to the underlying implementation of Factorization Machines.

  4. 04

    Lack of active development and community support

    The project has not seen significant updates in recent years, and the community around FastFM is relatively small compared to more mainstream machine learning libraries.

What it does well

  • Efficient handling of large datasets

  • Support for regression and classification tasks

  • Stochastic gradient descent optimization

Pricing

Free tier
YesOpen source — free to use
Paid from
$0
Model
Flat rate
Enterprise plan
No

Pricing not independently confirmed — check the vendor’s page.

Performance benchmarks

How Fast Is It?

Set up fastFM

Setup steps, common gotchas and what to check after 30 days.

Open the setup guide →
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