About OTO

OTO is a speech analytics API and AI-powered voice intelligence technology, which analyzes customer sentiment through tone of voice. The platform can be used by call centers, healthcare providers, home technology providers, and robotics developers to understand and leverage voice data.

OTO’s AI-powered voice intelligence solution DeepTone provides businesses with speaker insights, acoustic insights, emotional sentiment, and behavior analysis. It can be used by developers when building mobile apps or data analytics dashboards to provide end users with voice analysis. The solution analyzes acoustic signals in real time in order to provide users with a wide range of insights. It can be used by call centers to monitor calls and gain insight into both agent performance and customer sentiment.

The OTO API offers a range of deployment options but is best suited for on-premise applications.

Pricing starting from:


  • Free Version
  • Free Trial
  • Subscription


Business size



United States

Supported Languages


Pricing starting from:


  • Free Version
  • Free Trial
  • Subscription


OTO Software - Deeptone Speech Detection
OTO Software - Deeptone Gender Detection
OTO Software - Deeptone Emotion Detection
OTO Software - Deeptone Energy Detection
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OTO video
OTO Software - Deeptone Speech Detection
OTO Software - Deeptone Gender Detection
OTO Software - Deeptone Emotion Detection
OTO Software - Deeptone Energy Detection


Total features of OTO: 51

  • AI/Machine Learning
  • API
  • Anonymous Feedback
  • Application Development
  • Audio Capture
  • Audio File Management
  • Big Data Analytics
  • Call Center Management
  • Call Monitoring
  • Call Recording
  • Call Reporting
  • Call Screening
  • Communication Management
  • Concatenated Speech
  • Content Creation
  • Customer Engagement
  • Customer Experience Management
  • Customer Segmentation
  • Customizable Reports
  • Data Management
  • Data Security
  • Employee Activity Monitoring
  • Feedback Management
  • For Sales Teams/Organizations
  • IVR / Voice Recognition
  • Image Analysis
  • Language Detection
  • ML Algorithm Library
  • Multi-Language
  • NPS Survey Structure
  • NPS of Customers
  • NPS of Employees
  • Natural Language Processing
  • Negative Feedback Management
  • Neural Network Modeling
  • Patient Engagement Software
  • Patient Records Management
  • Performance Management
  • Performance Metrics
  • Predictive Analytics
  • Quality Management
  • Reporting/Analytics
  • Segmentation
  • Self-Learning
  • Sentiment Analysis
  • Surveys & Feedback
  • Third Party Integrations
  • Two-Way Audio & Video
  • Usage Tracking/Analytics
  • Visual Analytics
  • Voice Recognition



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Overall rating

5 /5
Value for Money
Ease of Use
Customer Support

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Showing 1 review
Aditya P.
Overall rating
  • Industry: Information Technology & Services
  • Company size: Self Employed
  • Used for Free Trial
  • Review Source

Overall rating

  • Ease of Use
  • Likelihood to recommend 9.0 /10

Perfect & Easy to use. - Strongly recommended.

Reviewed on 2021/01/18


Being a student, researching in a similar field of Speech Emotion Recognition/ Behavioural AI, I am really impressed with the product. I tried some labeled use-cases with DeepTone to find out results and compared them with original labels. Here are the things I liked the most about DeepTone.
1. The user interface. I found it really very interactive and easy to use. It raises your interest in the product.
2. Classification of Speech, Music, or Silence works completely fine. The voice model provides the results with high accuracy. 3. Classification of the voice of male or female provides accurate results.
4. The mapping of the energy of the speaker always shows correct results. I feel it gives more understanding of recognizing user behavior or behavior. 5. The best part is emotion recognition. I found it really amazing, which classifies the speech according to user behavior i.e. Happy, Irritated, Neutral, or Tired. I found emotion recognition of the DeepTone voice model works with great precision.

Overall I think, this product can be the best option to find out customer behavior and it can be a really useful tool for reaching out to target customers. I surely recommend this to fellow businesses/customers.


Only one thing concerning I realized, sometimes the DeepTone model gives confusing results in emotions (Specifically Irritated voice and Happy voice) with high-energy tones. I think the doors are open for improvement in this type of scenario and it can also be an area of research. Overall I am really happy with the product.


Below are some frequently asked questions for OTO.

OTO offers the following pricing plans:

  • Starting from: US$100,00/month
  • Pricing model: Subscription
  • Free Trial: Available

OTO.ai is available on pay-as-you-go and monthly subscription plans, as follows: Starter (pay-as-you-go): $0.60 / processed hour Pro: $ 100 / month or $0.20 / processed hour

OTO has the following typical customers:

201-500, 501-1 000, 1 001-5 000

OTO supports the following languages:


OTO supports the following devices:

Android (Mobile), iPhone (Mobile), iPad (Mobile)

We do not have any information about what integrations OTO has

OTO offers the following support options:

Email/Help Desk, FAQs/Forum, Knowledge Base, Phone Support

Related categories

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