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Speechmatics Flow

Paid

AI Voice Agents Automation Platform

4.5
Text-to-SpeechContact
Inputs: audioOutputs: text, audio
Type
Saas
Company
Speechmatics
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About Speechmatics Flow

Speechmatics Flow is an AI voice agents automation platform that enables developers and enterprises to build and deploy accurate, low-latency voice agents. It offers Speech-to-Text (STT) in 56+ languages with industry-leading accuracy, Text-to-Speech (TTS) optimized for voice agents, and flexible deployment options including on-premises and private SaaS. The platform includes features like a dynamic custom dictionary, speaker locking mechanism, and integrations with frameworks such as Vapi, LiveKit, and Pipecat. It is compliant with GDPR, HIPAA, SOC 2 Type II, and ISO 27001, making it suitable for privacy-critical industries like healthcare, contact centers, education, and food ordering.

Key Features

Speech-to-Text in 56+ languages with high accuracy
Text-to-Speech with low latency (ideal for voice agents)
Dynamic Custom Dictionary for model tuning without training
Speaker locking mechanism to filter background voices
Deploy on-premises or private SaaS for data sovereignty
Integrations with Vapi, LiveKit, Pipecat, LangGraph, MCP servers
Python and React JavaScript SDKs for custom development
Compliant with GDPR, HIPAA, SOC 2 Type II, ISO 27001
Scalable to millions of hours of audio per month
Free tier with 3,000 minutes STT and 1 million characters TTS per month

Pros & Cons

Pros
  • Best-in-class speech recognition accuracy across 56+ languages and dialects
  • Speaker locking removes need for expensive noise suppression
  • Enterprise-grade security with on-prem or private cloud deployment options
  • Generous free tier for developers (50 hours STT + 20 hours TTS per month)
  • Customizable without model retraining via custom dictionary
  • Supports major voice agent frameworks (Vapi, LiveKit, Pipecat)
  • Strong compliance certifications (GDPR, HIPAA, SOC 2, ISO 27001)
Cons
  • Text-to-Speech currently only supports English (more languages coming soon)
  • Pricing beyond the free tier requires contacting sales for enterprise plans
  • May require integration effort for complex custom voice pipelines
  • Advanced features like custom models and voice development are limited to enterprise tier

Best For

Contact Center Automation (CCaaS) – automated call triage, 24/7 support, proactive call handlingHealthcare / Medical – offload admin tasks, manage appointments, patient supportEducation / EdTech – assist students with lecture understanding, multilingual explanationsFood Ordering / Drive-Thrus – streamline transactions, automate repetitive tasks, boost revenueBuilding custom AI voice assistants and agents for various industries

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FAQ

How do I get started?
Developers can get up and running within minutes by signing up for a free account. The technology is platform-agnostic, so you can build it once and deploy it everywhere.
Does Speechmatics offer a free trial?
Yes, there is a free tier that includes 3,000 minutes (50 hours) of speech-to-text and 1 million characters (~20 hours) of text-to-speech per month, with no credit card required.
How does Speechmatics ensure privacy and security?
All voice data and processing are done on Speechmatics-hosted infrastructure, eliminating the need to send sensitive information to third-party cloud services. The platform is compliant with GDPR, HIPAA, SOC 2 Type II, and ISO 27001.
Can I customize Speechmatics for my use case and integrate with my systems?
Yes, the technology can be tailored to your needs. It integrates with existing services, LLMs, chatbots, LangGraph agents, MCP servers, and provides Python and React JavaScript SDKs.
How does Model Training work?
You can enable Model Training in your account settings to help improve Speechmatics models using anonymized data. As a thank you, you receive discounted pricing for usage while model training is enabled. You can change this setting at any time.
Do you offer volume discounts?
Volume discounts are automatically applied on any billable usage above 500 hours per month for each type of Speech-to-Text. For enterprise, discounts scale with your business and you can contact sales for custom pricing.