Build software that reads

Word Associations Icon
What's another word for...? Get synonyms and related words for one word or a phrase.
Sentiment Analysis Icon
Is this comment positive or negative? Find out the tone.
Text Similarity Icon
Evaluate the similarity of two words, sentences, or paragraphs.
Emotion Analysis Icon
What emotions are in this text...? Detect the emotions of a paragraph of text.
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Complete Twinword API List
Category Recommendation API
What are some other related categories?

Recommend highly related categories for e-commerce and other uses.

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BASIC
$0
MONTHLY
9,000 / month
$0.001 PER EXTRA

BEST

PRO
$19
MONTHLY
125,000 / month
$0.001 PER EXTRA
ULTRA
$99
MONTHLY
750,000 / month
$0.001 PER EXTRA
MEGA
$250
MONTHLY
2,000,000 / month
$0.001 PER EXTRA


Emotion Analysis API
What emotions are in this text...?

Detect the emotions of a paragraph of text.

Try Demo   Consume API   Documentation
BASIC
$0
MONTHLY
2,000 / month
$0.002 PER EXTRA

BEST

PRO
$19
MONTHLY
20,000 / month
$0.002 PER EXTRA
ULTRA
$99
MONTHLY
125,000 / month
$0.002 PER EXTRA
MEGA
$250
MONTHLY
350,000 / month
$0.002 PER EXTRA


Keyword Suggestion API
What are some related keywords for my campaign...?

Get a list of keyword suggestions scored by relevance for SEO and SEM campaigns.

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BASIC
$0
MONTHLY
10 / month
$0.03 PER EXTRA

BEST

PRO
$25
MONTHLY
2,000 / month
$0.03 PER EXTRA
ULTRA
$150
MONTHLY
15,000 / month
$0.03 PER EXTRA
MEGA
$450
MONTHLY
50,000 / month
$0.03 PER EXTRA


Language Scoring API
What's the difficulty level of this article?

Evaluate the difficulty level of a word, sentence, or paragraph and compare it with another.

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BASIC
$0
MONTHLY
9,000 / month
$0.001 PER EXTRA

BEST

PRO
$19
MONTHLY
125,000 / month
$0.001 PER EXTRA
ULTRA
$99
MONTHLY
750,000 / month
$0.001 PER EXTRA
MEGA
$250
MONTHLY
2,000,000 / month
$0.001 PER EXTRA


Lemmatizer API
"Dogs" to "dog", "abilities" to "ability"...

Get the root form of a word.

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BASIC
$0
MONTHLY
9,000 / month
$0.001 PER EXTRA

BEST

PRO
$19
MONTHLY
125,000 / month
$0.001 PER EXTRA
ULTRA
$99
MONTHLY
750,000 / month
$0.001 PER EXTRA
MEGA
$250
MONTHLY
2,000,000 / month
$0.001 PER EXTRA


Sentiment Analysis API
Is this comment positive or negative?

Find out the tone of a user comment or post.

Try Demo   Consume API   Documentation
BASIC
$0
MONTHLY
9,000 / month
$0.001 PER EXTRA

BEST

PRO
$19
MONTHLY
125,000 / month
$0.001 PER EXTRA
ULTRA
$99
MONTHLY
750,000 / month
$0.001 PER EXTRA
MEGA
$250
MONTHLY
2,000,000 / month
$0.001 PER EXTRA


Text Classification API
Which categories are relevant?

Suggest related categories for each blog, article, or post.

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BASIC
$0
MONTHLY
9,000 / month
$0.001 PER EXTRA

BEST

PRO
$19
MONTHLY
125,000 / month
$0.001 PER EXTRA
ULTRA
$99
MONTHLY
750,000 / month
$0.001 PER EXTRA
MEGA
$250
MONTHLY
2,000,000 / month
$0.001 PER EXTRA


Text Similarity API
How similar are these two text...?

Evaluate the similarity of two words, sentences, or paragraphs.

Try Demo   Consume API   Documentation
BASIC
$0
MONTHLY
9,000 / month
$0.001 PER EXTRA

BEST

PRO
$19
MONTHLY
125,000 / month
$0.001 PER EXTRA
ULTRA
$99
MONTHLY
750,000 / month
$0.001 PER EXTRA
MEGA
$250
MONTHLY
2,000,000 / month
$0.001 PER EXTRA


Topic Tagging API
What are the topics and keywords?

Automatically generate topics and keywords for articles and blogs.

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BASIC
$0
MONTHLY
9,000 / month
$0.001 PER EXTRA

BEST

PRO
$19
MONTHLY
125,000 / month
$0.001 PER EXTRA
ULTRA
$99
MONTHLY
750,000 / month
$0.001 PER EXTRA
MEGA
$250
MONTHLY
2,000,000 / month
$0.001 PER EXTRA


Visual Context Graph API
Build a graph with words connected to other words.

Diagram information for visualizing concepts or mind maps.

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BASIC
$0
MONTHLY
100 / month
$0.01 PER EXTRA

BEST

PRO
$19
MONTHLY
3,000 / month
$0.01 PER EXTRA
ULTRA
$99
MONTHLY
20,000 / month
$0.01 PER EXTRA
MEGA
$250
MONTHLY
60,000 / month
$0.01 PER EXTRA


Word Associations API
What's another word for...?

More than just synonyms. Get related words like "cats" and "dogs" too! Find synonyms and related words for one word or a phrase.

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BASIC
$0
MONTHLY
9,000 / month
$0.001 PER EXTRA

BEST

PRO
$19
MONTHLY
125,000 / month
$0.001 PER EXTRA
ULTRA
$99
MONTHLY
750,000 / month
$0.001 PER EXTRA
MEGA
$250
MONTHLY
2,000,000 / month
$0.001 PER EXTRA


Word Dictionary API
A dictionary and so much more!

Rich information for a word with definitions, associations, examples, and much more.

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BASIC
$0
MONTHLY
9,000 / month
$0.001 PER EXTRA

BEST

PRO
$19
MONTHLY
125,000 / month
$0.001 PER EXTRA
ULTRA
$99
MONTHLY
750,000 / month
$0.001 PER EXTRA
MEGA
$250
MONTHLY
2,000,000 / month
$0.001 PER EXTRA


Word Quiz API
Vocabulary test with levels and exam-specific words (SAT, GMAT, etc).

Customized word association quiz for game and e-learning software.

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BASIC
$0
MONTHLY
9,000 / month
$0.001 PER EXTRA

BEST

PRO
$19
MONTHLY
125,000 / month
$0.001 PER EXTRA
ULTRA
$99
MONTHLY
750,000 / month
$0.001 PER EXTRA
MEGA
$250
MONTHLY
2,000,000 / month
$0.001 PER EXTRA