Model Hubs & Serving

KotlinDL

Deep learning framework written in Kotlin for building and deploying models.

Status
UnmaintainedNo commits in 1054 days.
Last checked
Checked · Oct 11, 2026
License
Open source
Pricing
Free tier · from $0

What it is

KotlinDL is a deep learning framework built on top of the Kotlin programming language, enabling developers to create, train, and deploy machine learning models efficiently. It leverages the power of Kotlin's concise syntax and modern features to simplify the process of working with neural networks.

KotlinDL stands out by offering a deep learning framework that is tightly integrated with the Kotlin ecosystem, making it ideal for projects already leveraging Kotlin's features.

When it fits — and when it doesn’t

A good fit for

  • Developers working on Kotlin projects who need to integrate deep learning capabilities.

  • Teams that prefer the Kotlin ecosystem and want a framework aligned with their existing tech stack.

Look elsewhere if

  • Projects requiring real-time model inference at scale, as it may not be optimized for such use cases.

  • Developers looking for cloud-based managed services for deploying deep learning models.

Known weaknesses

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

  1. 01

    Limited community and support

    KotlinDL is relatively new, leading to fewer resources, tutorials, and community contributions compared to more established frameworks like TensorFlow or PyTorch.

  2. 02

    Narrow ecosystem integration

    Integration with other Kotlin libraries and tools can be limited due to the niche nature of KotlinDL within the broader machine learning ecosystem.

  3. 03

    Performance limitations for complex models

    KotlinDL may not offer the same level of optimization as more mature frameworks, which could result in slower training and inference times for complex deep learning models.

  4. 04

    Dependency on Kotlin ecosystem

    The framework heavily relies on Kotlin's features, which can be a barrier for developers not familiar with the language or its specific idioms.

What it does well

  • Built on Kotlin, offering modern language features and concise syntax.

  • Supports model deployment directly from the framework.

  • Integrates with existing Kotlin projects seamlessly.

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 KotlinDL

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

Open the setup guide →
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KotlinDL — tracked on AI Navigator

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