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OpenNMT-py

● Identity checked

Voice · Vendor site 2026-10-04

OpenNMT is an open-source neural machine translation ecosystem maintained by SYSTRAN and Ubiqus. OpenNMT-py provides a PyTorch implementation for training and serving NMT and related sequence models, alongside companion projects for efficient inference and tokenization.

Updated 2026-10-04View sources
Official website
Category
Voice
Free access
MIT-licensed open-source implementations and documentation
API access
Not confirmed

Is OpenNMT-py right for you?

A good fit for

Researchers and engineers building custom translation or sequence models who want established OpenNMT training and serving tooling.

Before you choose

You operate training and serving infrastructure; pretrained checkpoints vary by language pair and must be selected separately.

Open NMT ecosystem

OpenNMT.net introduces the community project born from Harvard NLP and SYSTRAN with PyTorch and TensorFlow stacks for neural sequence learning.

What it can do

Features & capabilities

Unknown is different from unavailable. Each fact carries its own evidence.

CapabilityValueEvidenceChecked
ImplementationsSite hosts OpenNMT-py and OpenNMT-tf with separate docs and pretrained model links.Facts sourced2026-10-04
EcosystemReferences CTranslate2 inference engine and Tokenizer libraries for production NMT workflows.Facts sourced2026-10-04
ExtensionsNotes support for text generation, tagging, summarization, image-to-text, and speech-to-text extensions.Facts sourced2026-10-04

Understand the total cost

OpenNMT-py pricing & plans

Free

Free

MIT-licensed open-source implementations and documentation

Access
MIT-licensed open-source implementations and documentation
Explore pricing & history

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The practical questions

Frequently asked questions

What is OpenNMT-py used for?

OpenNMT is an open-source neural machine translation ecosystem maintained by SYSTRAN and Ubiqus. OpenNMT-py provides a PyTorch implementation for training and serving NMT and related sequence models, alongside companion projects for efficient inference and tokenization.

Does OpenNMT-py have a free plan?

MIT-licensed open-source implementations and documentation. This record lists ongoing free access; check the plan limits before starting.

How much does OpenNMT-py cost?

No paid monthly price is listed; this record treats the product as free to start. See the plan cards for entitlements, billing commitments and seat minimums.

Can I use OpenNMT-py through an API?

Not confirmed. API access and subscription access may have different terms; consult the linked sources.

What should I check before choosing it?

You operate training and serving infrastructure; pretrained checkpoints vary by language pair and must be selected separately.

Price history

No retained pricing changes yet. A current price alone does not establish a historical trend.

How this profile is supported

Facts apply to the named version and check date. Send a sourced correction if something changed.