Build software that reads
with Twinword API
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.
Topic Tagging Icon
Automatically generate topics and keywords for articles and blogs.
Text Classification Icon
Suggest related categories for each blog, article, or post.
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Complete API List
Understanding human text.
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
10,000 / month
$0.003 PER EXTRA

BEST

PRO
$19
MONTHLY
125,000 / month
$0.001 PER EXTRA
ULTRA
$99
MONTHLY
750,000 / 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   Free API Key

FREE

FREE
$0
MONTHLY
Unlimited


Topic Tagging API
What are the topics and keywords?

Automatically generate topics and keywords for articles and blogs.

Try Demo   Try Out Endpoint
BASIC
$0
MONTHLY
10,000 / month
$0.003 PER EXTRA

BEST

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


Text Classification API
Which categories are relevant?

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

Try Demo   Try Out Endpoint
BASIC
$0
MONTHLY
10,000 / month
$0.003 PER EXTRA

BEST

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


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

Get the root form of a word.

Try Demo   Free API Key

FREE

FREE
$0
MONTHLY
Unlimited


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
10,000 / month
$0.003 PER EXTRA

BEST

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


Word Graph 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
10,000 / month
$0.003 PER EXTRA

BEST

PRO
$19
MONTHLY
125,000 / month
$0.001 PER EXTRA
ULTRA
$99
MONTHLY
750,000 / 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
10,000 / month
$0.003 PER EXTRA

BEST

PRO
$19
MONTHLY
125,000 / month
$0.001 PER EXTRA
ULTRA
$99
MONTHLY
750,000 / 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.

Try Demo   Try Out Endpoint
BASIC
$0
MONTHLY
10,000 / month
$0.003 PER EXTRA

BEST

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