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Cognitive Services let you build intelligent apps with powerful algorithms using just a few lines of code. Try the Cognitive Services APIs for free in minutes.


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Bing Spell Check API v7

Help users correct spelling errors, recognize the difference among names, brand names, and slang, as well as understand homophones as they’re typing.

1,000 transactions per month, up to 1 per second. Trial keys expire after a 7 day period.

Computer Vision

Distill actionable information from images

5,000 transactions, 20 per minute.


Detect, identify, analyze, organize, and tag faces in photos

30,000 transactions, 20 per minute.

Ink Recognizer PREVIEW

Recognize digital ink in your content

2,000 transactions free per month

Speech services


Speech to Text
Text to Speech
Speech Translation

Unified Speech Services for free trials on 5,000 transactions per month, 20 per minute. Trial keys will expire after a 30 day period, after which you can create a Cognitive Services account on Azure portal. As part of the bundle, this trial only includes the following: Speech-to-Text, Text-to-Speech, Speech Translation.

Speaker Recognition PREVIEW

A Speech service feature that verifies and identifies speakers

20,000 transactions per month, 20 per minute.

Text Analytics

Easily evaluate sentiment and topics to understand what users want

5,000 transactions per month.

Anomaly Detector PREVIEW

Embed anomaly detection capabilities

20,000 transactions free per month


Create personalized user experiences

50,000 transactions free per month