Retell AI
AI Voice Agent Platform for Phone Call Automation
VS
Speech Studio
Microsoft's platform for speech AI.
Popularity
Retell AI6,459
Speech Studi...9,575
Pricing
FreemiumRetell AI
FreemiumSpeech Stu...
Features
5
Retell AI
vs
5
Speech Stu...
Our verdict
Speech Studio is significantly more popular in terms of media coverage and engagement.
Detailed comparison
Criteria
Retell AI
Speech Studio
Pricing
Freemium
Freemium
Plans & pricing
Pay-as-you-go: Free, Enterprise: Custom
Free (F0 Tier): Free, Speech-to-Text (Real-time Standard): $1/mo, Speech-to-Text (Batch): $0.18/mo, Text-to-Speech (Neural Voices): $16/mo, Speech Translation (Real-time): $2.5/mo, Speech-to-Text (2,000 hours/month commitment): $1600/mo, Text-to-Speech (80 million characters/month commit: $960/mo, Custom Neural Voices (CNV Pro): Custom
Free trial
Yes
Yes
Audience
b2b
b2b
Platforms
Web
Web, Api, Cli, Sdk
API
Yes
Yes
Open Source
Proprietary
Proprietary
Integrations
—
Azure ai foundry, Azure cognitive services speech, Azure language services, Azure openai service, Visual studio .net
Categories
Voice, AI Agents
Voice, Audio
Popularity
High
Very High
Description
Retell AI allows users to build, test, deploy, and monitor production-ready AI voice agents at scale with ease. This platform is designed to boost efficiency and performance across various operations, particularly for phone call automation.
Speech Studio is Microsoft's comprehensive platform for developing and integrating advanced speech technologies. It enables users to create custom voice experiences and applications, offering tools for speech-to-text, text-to-speech, and speech translation.
Pricing
Retell AI
Freemium
Speech Studio
Freemium
Plans & pricing
Retell AI
Pay-as-you-go: Free, Enterprise: Custom
Speech Studio
Free (F0 Tier): Free, Speech-to-Text (Real-time Standard): $1/mo, Speech-to-Text (Batch): $0.18/mo, Text-to-Speech (Neural Voices): $16/mo, Speech Translation (Real-time): $2.5/mo, Speech-to-Text (2,000 hours/month commitment): $1600/mo, Text-to-Speech (80 million characters/month commit: $960/mo, Custom Neural Voices (CNV Pro): Custom
Free trial
Retell AI
Yes
Speech Studio
Yes
Audience
Retell AI
b2b
Speech Studio
b2b
Platforms
Retell AI
Web
Speech Studio
Web, Api, Cli, Sdk
API
Retell AI
Yes
Speech Studio
Yes
Open Source
Retell AI
Proprietary
Speech Studio
Proprietary
Integrations
Retell AI
—
Speech Studio
Azure ai foundry, Azure cognitive services speech, Azure language services, Azure openai service, Visual studio .net
Categories
Retell AI
Voice, AI Agents
Speech Studio
Voice, Audio
Popularity
Retell AI
High
Speech Studio
Very High
Description
Retell AI
Retell AI allows users to build, test, deploy, and monitor production-ready AI voice agents at scale with ease. This platform is designed to boost efficiency and performance across various operations, particularly for phone call automation.
Speech Studio
Speech Studio is Microsoft's comprehensive platform for developing and integrating advanced speech technologies. It enables users to create custom voice experiences and applications, offering tools for speech-to-text, text-to-speech, and speech translation.
Features
Retell AI
Production-ready AI voice agent building
AI voice agent testing capabilities
Seamless AI voice agent deployment
Comprehensive AI voice agent monitoring
Scalable AI voice agent operations
Speech Studio
Speech-to-text
Text-to-speech
Speech translation
Customizable voice models
Real-time transcription
Key differentiators
Retell AI
- Production-ready AI voice agents
- Scalable deployment & monitoring
- End-to-end AI voice agent lifecycle
Speech Studio
- High accuracy and customization
- Comprehensive speech capabilities
- Extensive multi-language support
- No-code/low-code UI tools
- Advanced voice analysis
Other comparisons
FAQ: Retell AI vs Speech Studio
Retell AI: AI Voice Agent Platform for Phone Call Automation. Speech Studio: Microsoft's platform for speech AI.. Both tools take different approaches to address similar needs.
Both offer a free or freemium plan. Retell AI is freemium and Speech Studio is freemium.
The best choice between Retell AI and Speech Studio depends on your specific needs. Compare their features, pricing, and target audience on this page to find the tool that best fits your use case.
Both are primarily designed for individuals. The choice depends on which specific features you need.
Retell AI offers: Production-ready AI voice agent building, AI voice agent testing capabilities, Seamless AI voice agent deployment, Comprehensive AI voice agent monitoring. Speech Studio offers: Speech-to-text, Text-to-speech, Speech translation, Customizable voice models.
Based on our data, Speech Studio currently enjoys greater popularity. However, popularity isn't the only factor — compare features to find the right tool for your needs.
Yes, both Retell AI and Speech Studio offer a free trial.
Speech Studio offers 5 integrations (azure ai foundry, azure cognitive services speech, azure language services, azure openai service, visual studio .net...) compared to 0 for Retell AI.
Retell AI is available on Web. Speech Studio is available on Web, Api, Cli, Sdk.