Top Free Translation tools, APIs, and Open Source models

Top Free Translation tools, APIs, and Open Source models

What is Machine Translation API?

Machine translation (MT), also known as automated translation, refers to the automated process by which computer software translates text from one language to another without human intervention. There are three main approaches to machine translation: rule-based, statistical and neural network.

Modern machine translation software often supports customisation based on specific domains or professions, improving the quality of translations by narrowing the range of acceptable substitutions.

These APIs are used in a wide range of applications, including websites that offer multilingual content, mobile apps for travelers, customer support systems that provide translations, and more.

Top Open Source (Free) Translation models on the market

For users seeking a cost-effective engine, opting for an open-source model is the recommended choice. Here is the list of best AI Machine Translation Open Source Models:

1. Marian NMT

Marian NMT is a neural machine translation framework, which has been developed by the Microsoft Translator team. Its efficient translation process and high translation quality are widely acknowledged.

This open-source framework is incredibly versatile for various translation tasks, as it supports a wide range of languages and language pairs.

2. OpenNMT

OpenNMT is an open-source neural machine translation framework that features pre-trained models for multiple language pairs. OpenNMT's exceptional versatility makes it possible for users to fine-tune models for particular domains and tasks.

3. Tensor2Tensor

Developed by Google Brain, Tensor2Tensor is an all-encompassing collection of advanced learning models designed for NLP tasks such as machine translation. This resource is constructed atop TensorFlow, which makes integration with other TensorFlow-based projects effortless.

4. Opus-MT

Opus-MT is a machine translation framework that aims to simplify the utilization of multilingual translation datasets. It provides pre-trained models for various languages and allows for the incorporation of parallel corpora from the OPUS collection.

This framework proves particularly valuable for those handling diverse language pairs and substantial translation datasets.

5. Joey NMT

Joey NMT is an open-source neural machine translation framework founded on PyTorch. The framework includes pre-trained models and provides a seamless user experience.

Its flexibility and customization options have drawn the attention of developers who seek to work on translation tasks and customize models to suit their particular needs.

6. Meta

Meta, created by Facebook AI, is an influential open-source translation model designed for multilingual translation tasks, as part of a more extensive effort to make AI models accessible and useful. The wide-ranging language capabilities offered by Meta make it a fitting tool for a diverse audience, with potential applications in various fields.

7. Libre Translate

Libre Translate provides an open-source and privacy-focused alternative to fee-paying translation services. The emphasis is put on user privacy and data control. Users can translate content without having to expose their data to third parties in agreement with the principles of transparency and user empowerment.

For those prioritising data privacy, this provides a secure and transparent option for individuals and organisations seeking translations.

Cons of Using Open Source AI models

‍While open source models offer many advantages, they also come with some potential drawbacks and challenges. Here are some cons of using open source models:

  • Not Entirely Cost Free: Open-source models, while providing valuable resources to users, may not always be entirely free of cost. Users often need to bear expenses related to hosting and server usage, especially when dealing with large or resource-intensive data sets.
  • Lack of Support: Open source models may not come with official support channels or dedicated customer support teams. If you encounter issues or need assistance, you might have to rely on community forums or the goodwill of volunteers, which can be less reliable than commercial support.
  • Limited Documentation: Some open source models may have incomplete or poorly maintained documentation. This can make it difficult for developers to understand how to use the model effectively, leading to frustration and wasted time.
  • Security Concerns: Security vulnerabilities can exist in open source models, and it may take longer for these issues to be addressed compared to commercially supported models. Users of open source models may need to actively monitor for security updates and patches.
  • Scalability and Performance: Open source models may not be as optimized for performance and scalability as commercial models. If your application requires high performance or needs to handle a large number of requests, you may need to invest more time in optimization.

Why choose Eden AI?

Given the potential costs and challenges related to open-source models, one cost-effective solution is to use APIs. Eden AI smoothens the incorporation and implementation of AI technologies with its API, connecting to multiple AI engines.

Eden AI presents a broad range of AI APIs on its platform, customized to suit your specific needs and financial limitations. These technologies include data parsing, language identification, sentiment analysis, logo recognition, question answering, data anonymization, speech recognition, and numerous other capabilities.

To get started, we offer free $10 credits for you to explore our APIs. 60720 (1).png

Access AI Machine Translation providers with one API

Our standardized API enables you to integrate translation APIs into your system with ease by utilizing various providers on Eden AI. Here is the list (in alphabetical order):

  • Amazon
  • DeepL
  • Google
  • IBM
  • Microsoft
  • ModernMT
  • NeuralSpace
  • OpenAI
  • Phedone

1. Amazon- Available on Eden AI

Amazon Translate is a neural machine translation service that provides rapid, high-quality, cost-effective and customizable language translation. You can integrate batch and real-time translation functions into your applications with just one API call.

The API empowers you to personalize your machine learning (ML) translated results to identify brand names, model names, and any other distinct terms.

2. DeepL- Available on Eden AI


DeepL is a leading machine translation provider that offers an API for developers. Its advanced neural machine translation technology can be integrated into applications, websites, and services, facilitating high-quality translation across multiple languages.

The platform is renowned for its accuracy and natural-sounding translations, positioning it as a preferred option for those seeking reliable language translation capabilities in their software solutions.

3. Google- Available on Eden AI

Google's Translation API empowers developers to seamlessly incorporate Google's machine translation abilities into their apps and offerings. It facilitates translation across 100 languages, offering text and document translation while leveraging Google's neural machine translation models to deliver high-quality translations.

Use our no-code AutoML technology to create custom machine translation models in more than fifty language pairs.

4. IBM- Available on Eden AI

IBM Watson Language Translator can translate text from one language to another. The service provides various IBM-built translation models that you can personalise according to your distinct terminology and language.

Users can transmit text to the API for translation, and it will return the translated content. With Language Identification API, you can detect up to 76 languages and it supports 23 file types.

5. Microsoft- Available on Eden AI

Translator, which is part of Azure Cognitive Services, is a cloud-based machine translation service that is versatile enough to be used for building applications, websites, tools, and other solutions. Additionally, it includes features such as automatic language detection and customizable translation models, making it an excellent choice for businesses that want to reach a global audience.

It aids in presenting alternative translations from English or to English, contextual examples to assist in selecting the accurate translation, and even instances of translated sentences that employ the word.

6. ModernMT- Available on Eden AI

ModernMT is an advanced machine translation platform that harnesses state-of-the-art neural network technology to deliver high-quality and contextually-aware translations. It expertly navigates intricate linguistic subtleties and provides developers with a potent tool to seamlessly integrate top-of-the-line machine translation capabilities into their applications, websites, and services.

ModernMT's distinctive method intends to supply more natural translations, establishing it as an advantageous resource for businesses seeking precise and effortless translations in a broad spectrum of scenarios.

7. NeuralSpace- Available on Eden AI

NeuralSpace's cutting-edge translation models can facilitate text translation across over 140 languages. You can create bespoke translation models using AutoNLP to enhance your language capabilities. With this translation API, you can broaden your chatbot language assistance to an unlimited number of languages.

8. OpenAI- Available on Eden AI

OpenAI has developed GPT-3, a highly potent linguistic model that can be utilised for a multitude of tasks related to comprehension and creation, including translation. Programmers may employ GPT-3 to establish tailored translation software that transmits text in one language and receives translations in another.

9. Phedone- Available on Eden AI

Phedone is an NLP (Natural Language Processing) SaaS platform that uses advanced artificial intelligence and proprietary algorithms to automate translation. Little (or no) development is required, nor need to plan for a lengthy project management period. It can be seamlessly integrated into your current system as plug-and-play.

Pricing Structure for Translation API Providers

Eden AI offers a user-friendly platform for evaluating pricing information from diverse API providers and monitoring price changes over time. As a result, keeping up-to-date with the latest pricing is crucial. The pricing chart below outlines the rates for smaller quantities for October 2023, as well as you can get discounts for potentially large volumes.

How Eden AI can help you?

Eden AI is the future of AI usage in companies: our app allows you to call multiple AI APIs.
  • Centralized and fully monitored billing on Eden AI for Translation APIs
  • Unified API for all providers: simple and standard to use, quick switch between providers, access to the specific features of each provider
  • Standardized response format: the JSON output format is the same for all suppliers thanks to Eden AI's standardization work. The response elements are also standardized thanks to Eden AI's powerful matching algorithms.
  • The best Artificial Intelligence APIs in the market are available: big cloud providers (Google, AWS, Microsoft, and more specialized engines)
  • Data protection: Eden AI will not store or use any data. Possibility to filter to use only GDPR engines.

You can see Eden AI documentation here.

Next step in your project

The Eden AI team can help you with your AI Translation integration project. This can be done by :

  • Organizing a product demo and a discussion to better understand your needs. You can book a time slot on this link: Contact
  • By testing the public version of Eden AI for free: however, not all providers are available on this version. Some are only available on the Enterprise version.
  • By benefiting from the support and advice of a team of experts to find the optimal combination of providers according to the specifics of your needs
  • Having the possibility to integrate on a third-party platform: we can quickly develop connectors.

Related Posts

Try Eden AI for free.

You can directly start building now. If you have any questions, feel free to schedule a call with us!

Get startedContact sales