Evaluation & Testing

lmms-eval

Multimodal Evaluation Toolkit for Text, Image, Video, and Audio Tasks

Status
Generally available
Last checked
Checked · Oct 15, 2026
License
Open source
Pricing
Free tier · from $0

What it is

lmms-eval is a comprehensive evaluation toolkit designed to assess the performance of multimodal models across various tasks including text, image, video, and audio. It provides developers with a unified framework to evaluate different aspects of their models efficiently.

lmms-eval stands out as a comprehensive and extensible toolkit for evaluating multimodal models, offering support across text, image, video, and audio tasks in one unified framework.

When it fits — and when it doesn’t

A good fit for

  • Research teams needing a comprehensive evaluation toolkit for multimodal tasks

  • Developers working on projects that require performance assessment of models across different modalities

Look elsewhere if

  • Teams requiring real-time model evaluation (batch processing only)

  • Projects with strict licensing requirements incompatible with NOASSERTION license

Known weaknesses

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

  1. 01

    Limited documentation for advanced use cases

    Examples and tutorials are sparse for integrating custom metrics or handling complex multimodal tasks

  2. 02

    Performance bottlenecks with large datasets

    Evaluation processes can become slow when dealing with high-resolution video or audio data

What it does well

  • Unified evaluation framework for multimodal tasks

  • Supports text, image, video, and audio evaluations

  • Extensible architecture to integrate new evaluation metrics

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 lmms-eval

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

Open the setup guide →