Comparison between luis.ai vs api.ai vs wit.ai?

Question

Does anyone know the specific differences and features among the three, Or if one has more features/more flexible to use as a developer?

Answer 1

wit.ai vs Dialogflow vs luis.ai

╔══════════════════════════════════════════════════════════════════════════════════════════════════════════════════════════════╗ ║                                      wit.ai vs api.ai(Dialogflow) vs luis.ai                                                 ║ ╠══════╦════════════════════════════════════╦═════════════════════════════════════════════╦════════════════════════════════════╣ ║ S.No ║               Wit.ai               ║          Api.ai(Dialogflow)                 ║               Luis.ai              ║ ╠══════╬════════════════════════════════════╬═════════════════════════════════════════════╬════════════════════════════════════╣ ║ 1    ║ Wit.ai API is completely free      ║ Api.ai Has a paid enterprise option         ║ LUIS is in beta and free to use    ║ ║      ║ with no limitations on             ║ which allows for this to be run on a        ║ 10K transactions per month         ║ ║      ║ request rates.                     ║ private cloud internally and more           ║ and up to 5 requests per second    ║ ║      ║                                    ║ from their services team., After google     ║ for each account.                  ║ ║      ║                                    ║ acquisition they are providing free         ║                                    ║ ║      ║                                    ║ services by integrating google cloud        ║                                    ║ ║      ║                                    ║ services.                                   ║                                    ║ ╠══════╬════════════════════════════════════╬═════════════════════════════════════════════╬════════════════════════════════════╣ ║ 2    ║ Provides a nice combination        ║ Speech to Text and Text to Speech           ║ LUIS uses machine learning         ║ ║      ║ of both voice recognition and      ║ capabilities, along with machine            ║ based methods to analyze           ║ ║      ║ machine learning for developers.   ║ learning.                                   ║ sentences. To perform machine      ║ ║      ║                                    ║                                             ║ learning, LUIS breaks an           ║ ║      ║                                    ║                                             ║ utterance into "tokens".           ║ ╠══════╬════════════════════════════════════╬═════════════════════════════════════════════╬════════════════════════════════════╣ ║ 3    ║ Has two main elements to it        ║ Support of Intents, Entities, actions       ║ Supports Intents, Entities         ║ ║      ║ that you set up within your        ║ and one key focus area is its “Domains”.    ║ and actions.                       ║ ║      ║ app – intents and entities.        ║                                             ║                                    ║ ║      ║ Actions are separated to           ║                                             ║                                    ║ ║      ║ use as a combined operations.      ║                                             ║                                    ║ ╠══════╬════════════════════════════════════╬═════════════════════════════════════════════╬════════════════════════════════════╣ ║ 4    ║ Has pre-build entities like        ║ Has pre-build entities like @sys.date,      ║ Has pre-build entities             ║ ║      ║ temperature, number, URLs,         ║ @sys.color, @sys.unit-currency… etc.        ║ builtin.intent.alarm,              ║ ║      ║ emails, duration… etc.             ║                                             ║ builtin.intent.calendar,           ║ ║      ║                                    ║                                             ║ builtin.intent.email… etc.         ║ ╠══════╬════════════════════════════════════╬═════════════════════════════════════════════╬════════════════════════════════════╣ ║ 5    ║ Doesn’t have integration module    ║ Has integration module to connect           ║ Has integration to Microsoft       ║ ║      ║ to directly communicating with     ║ directly to Facebook messenger and          ║ Azure and other services, can be   ║ ║      ║ Facebook messenger or other        ║ other messenger api’s. Has support for      ║ deployable in any supported        ║ ║      ║ messenger APIs. but has web        ║ deploying in to heroku server, enterprise   ║ servers.                           ║ ║      ║ service api to hook services.      ║ paid environment.                           ║                                    ║ ╠══════╬════════════════════════════════════╬═════════════════════════════════════════════╬════════════════════════════════════╣ ║ 6    ║ Early in 2015, joined Facebook     ║ Created by a team who built personal        ║ LUIS was introduced together with  ║ ║      ║ and opened up the entire platform  ║ assistant app for major mobile platforms    ║ Microsoft Bot Framework and Skype  ║ ║      ║ to be free for both public and     ║ with speech and text enabled conversations. ║ Developer Platform which can be    ║ ║      ║ private instances.                 ║ acquired by google (sept 2016).             ║ used to create Skype Bots.         ║ ╠══════╬════════════════════════════════════╬═════════════════════════════════════════════╬════════════════════════════════════╣ ║ 7    ║ Wit.ai API for developers of iOS,  ║ Api.ai has SDKs for Android, iOS,           ║ LUIS allow building applications   ║ ║      ║ Android, Node.js, Raspberry Pi,    ║ the Apple Watch, Node.js, Cordova,          ║ by using the LUIS web interface.   ║ ║      ║ Ruby, Python, C, Rust and          ║ Unity, C#, Xamarin, Windows Phone,          ║ No coding needed other than the    ║ ║      ║ Windows Phone. It even             ║ Python and JavaScript. It also can be       ║ ability to interpret and use the   ║ ║      ║ has a JavaScript plugin for        ║ integrated with Amazon’s Echo and           ║ returned JSON in application.      ║ ║      ║ front end developers.              ║ Microsoft’s Cortana.                        ║ It is also possible to use the     ║ ║      ║                                    ║                                             ║ LUIS REST API for                  ║ ║      ║                                    ║                                             ║ automation of applications.        ║ ╚══════╩════════════════════════════════════╩═════════════════════════════════════════════╩════════════════════════════════════╝ 

Update: API.AI is now Dialogflow. Learn more here.