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Open-source framework for building cross-platform voice apps (Alexa, Google Assistant) and chat apps.
- Framework: free open source
- Enterprise add-ons & hosting: custom
Voice conversion tech that transforms one person’s voice into another, widely used in media production.
- Project-based or custom
- Focus on film & entertainment
- No public free tier
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NLP engine acquired by Facebook. Developers use Wit.ai to build chatbots, voice interfaces, and intent recognition.
- Free: usage under Facebook Developer platform
- No explicit paid plans
Call analytics platform offering speech-to-text, sentiment analysis, and PCI redaction for contact centers.
- Pay-as-you-go from $0.01/min
- Enterprise: custom
- Focus on compliance features
Speech recognition and voice analytics platform featuring speaker diarization and identity verification.
- Pay-as-you-go or subscription
- Enterprise solutions available
On-device ASR focusing on noise robustness, works offline for IoT and consumer electronics.
- Custom licensing for manufacturers
- No public consumer plan
Speech recognition and text-to-speech engine for IVR and contact centers, supporting multi-language call automation.
- Custom enterprise licensing
- No public free tier
- On-prem or cloud solutions
Emotion analytics from voice, detecting mood and emotional states for call centers, automotive, healthcare.
- Custom enterprise licensing
- No public pricing
- Focus on emotion analytics SDK
Voice AI platform for mobile and web, providing wake word, TTS, and ASR solutions with custom model training.
- Free dev tier
- Premium: from $30/month
- Enterprise: custom features
Serverless communication platform featuring voice recognition, IVR, call center solutions, and telephony APIs.
- Pay-as-you-go call rates
- AI features: from $0.04/min
- Enterprise: custom plans