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CTranslate2
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CTranslate2

Fast inference engine for Transformer models

by OpenNMT · GitHub
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avxavx2cppMITC++
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In plain words

Run Transformer models efficiently on your computer with optimized performance and reduced memory usage.

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4.58k4.56k
2026-07-072026-08-31
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📄 About

Fast inference engine for Transformer models

CTranslate2 has 4.6k stars on GitHub. It has been forked 501 times. CTranslate2 is written mainly in C++. It has been in active development since 2019. CTranslate2 is available under the MIT license. Its main topics are avx, avx2, cpp, cuda.

Frequently asked questions

What is CTranslate2?

Fast inference engine for Transformer models

Is CTranslate2 open source?

CTranslate2 is an open-source project. It is released under the MIT license.

Is CTranslate2 free?

Yes. CTranslate2 is free and open source — you can use, modify and self-host it.

What license does CTranslate2 use?

CTranslate2 is available under the MIT license.

What language is CTranslate2 written in?

CTranslate2 is written mainly in C++.

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