Bing Spell Check API

Help users correct spelling errors, recognize the differences among names, brand names, and slang, and understand homophones as they type.

See for yourself

Discover the various spell check capabilities: from Spell for web searches to Proof for documents. Spell is more aggressive to return better search results, while Proof is less aggressive and adds capitalization, basic punctuation, and other features to help create a document.

Word breaks

Correct word-breaking issues with a single flag


Easily recognize slang and informal language


Spot common name errors in context

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Teach your apps to understand commands from your users

Bing Spell Check API

Detect and correct spelling mistakes in your app

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Translator Text API

Easily conduct automatic text translation with a simple REST API call


Convert speech to text and back again to understand user intent

Custom Speech Service PREVIEW

Overcome speech recognition barriers like speaking style, background noise, and vocabulary

Bing Spell Check API

Detect and correct spelling mistakes in your app

Speaker Recognition API PREVIEW

Use speech to identify and authenticate individual speakers

Translator Speech API

Easily conduct real-time speech translation with a simple REST API call

Recommendations API PREVIEW

Predict and recommend items your customers want

Academic Knowledge API PREVIEW

Tap into the wealth of academic content in the Microsoft Academic Graph

Ready to supercharge your app?