Powerful Natural Language Processing APIs

The most powerful and cost-effective NLP AI APIs, continuously updated.

Language Translation

Use our advanced Deep Learning language translation APIs to seamlessly translate between a wide array of languages.


Automatically rephrase, or paraphrase an input sentence into alternate, gramatically correct text that preserves the original meaning.

Sentiment Analysis

Automatically classify the sentiment of input text into Positive, Negative, or Neutral and a corresponding sentiment strength score.

Part-of-Speech (POS) Tagging

Identify the part of speech of words in a sentence. Pull out all the verbs, nouns, proper nouns, etc. from a sentence. Identify the true meaning.

Sentence Parsing

Fully parse a sentence into its constituent structure.

Text Analytics

Perform analytics over unstructured text to identify sentiment, key words and phrases, and much more.

Entity Extraction

Identify the key entities that are referenced in unstructured text.

Language Detection

Automatically detect the language of a text string across the world's 14 most popular languages.

800 free API calls/month, with no expiration

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Input any sentence to process it.


Cloudmersive APIs power over 1,000 of the world's smartest businesses, including:


Great Documentation and Client Libraries

C# / .NET / .NET Core, Java, Node.JS, Python, PHP, Ruby, Objective-C, Drupal client libraries available.
Full documentation
Swagger/OpenAPI specifications

Interactive Docs Read Docs and Examples .NET Java Node.JS Python PHP Ruby Objective-C Drupal

Satisfied Customers

"Cloudmersive has become our strategic partner in full life cycle document processing, from create and capture, to OCR, to virus and sensitive content scanning, to report generation. This has really taken our business results to the next level, reducing costs and streamlining our systems. We have also really appreciated top-notch support."

-J. Li, Pyriform Group

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Flexible Deployment

Use Cloudmersive APIs from the cloud, or deploy Cloudmersive APIs to the edge, a private cloud, your on-premise data center, or a custom public cloud instance when needed to enable key scenarios for latency, compliance, security and control.

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800 free API calls/month, with no expiration

Get started now! or Sign in with Google

Questions? We'll be your guide.

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