Welcome to SESTEK
SESTEK is an AI-powered product suite for customer service automation and intelligence. This documentation covers everything from API integration and deployment to day-to-day product usage — whether you're a developer connecting a speech recognition endpoint, a quality manager configuring evaluation forms, or an IT team standing up a new on-premises deployment.
Use the search bar or the navigation on the left to find what you need. If you're new here, start with Where to begin below.
Where to begin
Not sure where to start? Choose the path that matches your goal.
I'm setting up a new integration
Start with the product's About page to understand capabilities, then follow the relevant integration guide below.
→ Convert text to speech via API
→ Transcribe speech to text via API
→ Build a voice or chat agents
→ Build an audio processing pipeline
→ Send your conversation recordings for detailed analysis
→ Translate conversations in your contact center
I'm managing a customer service operation
Start with Conversational Intelligence or Agent Assist depending on whether you need post-interaction analytics or real-time agent support.
→ Conversational Intelligence — About
→ Agent Assist — About
→ AQM — About
→ Coaching — About
I'm evaluating Sestek for my organization
Review the Features and Packages pages for each product.
→ Conversational Intelligence — Packages
→ AI Agents — Packages
→ Speech Recognition — Packages
→ Text-to-Speech — Packages
I'm deploying on infrastructure
Review the platform deployment section and the requirements page for each product you're deploying.
→ Platform Overview
→ Deployment Approaches
→ High Availability & Disaster Recovery
Products
Agentic AI
AI Agents
Build and deploy autonomous AI agents that handle multi-step customer interactions across voice, chat, and IVR — without rigid flow dependencies. AI Agents uses a prompt-based design model with multi-agent orchestration, built-in safety controls, and full observability.
Key capabilities: Multi-agent orchestration · RAG-based knowledge access · Agentic evaluation · Low-code flow designer · PII masking · Omnichannel deployment
→ About · Features · Packages · First Project Guide
Text-to-Speech
Convert text to natural, human-like audio using neural voice models. Supports SSML customization, voice cloning, and a broad library of multilingual voices — deployable via REST API, WebSocket, or MRCP for IVR environments.
Key capabilities: Natural neural voices · SSML support · Voice cloning · Multilingual synthesis · WebSocket streaming · Avaya, Genesys integrations
→ About · Supported Languages & Voices · Authentication · Synthesize Text · SSML Tag Support · Postman Collection · Best Practices · Packages
Speech Recognition
Transcribe voice input with industry-leading accuracy across languages, accents, and audio conditions. Supports real-time streaming and file-based transcription with grammar-based and language-model-based recognition modes, context biasing, and custom vocabulary.
Key capabilities: 98% accuracy · Multilingual models · Real-time WebSocket transcription · Custom vocabulary · Context biasing · Text normalization · MRCP and REST APIs
→ About · Supported Languages & Models · Authentication · Transcribe a File · Postman Collection · Packages
Conversational Intelligence
Analytics
Automatically analyze 100% of customer interactions — calls, chats, and meetings — using speech recognition, sentiment analysis, and automated quality management. Surface coaching opportunities, compliance gaps, and customer experience trends without manual sampling.
Key capabilities: Topic and category detection · Sentiment analysis · Real-time notifications · AI-generated conversation summaries
→ About · Features · Packages · Requirements
AQM
Optimize quality management, improves workforce efficiency, and gains valuable customer information.
Key capabilities: Automated quality scoring · Enhanced Employee Focus on Quality · Optimized Employee Workload
Empowered QM Teams · Streamlined Operations for Employee Well-being
Coaching
Give supervisors a continuous, data-driven view of agent performance by combining quality evaluation results, acoustic metrics, and AI-generated coaching reports in a single interface.
Key capabilities: Automatic performance segmentation · AI-generated individual coaching reports · Centralized evaluation feedback management
→ About
Agent Copilot
Agent Assist
Surface the right knowledge at the right moment during live customer conversations. Agent Assist listens in real time and delivers intent-based suggestions, generative Q&A responses, and post-conversation automation — without requiring the agent to switch context.
Key capabilities: Real-time intent detection · Generative Q&A · AI Agent mode · Post-conversation automation · LLM integrations · Performance insights
→ About · Features · Packages · Requirements
Virtual Translator
Enable real-time, bidirectional speech translation in live customer conversations. Removes the language barrier between agents and customers without interrupting the conversation flow or requiring human interpreters.
Key capabilities: Real-time speech translation · Multilingual customer support · Seamless agent experience
→ About · Features · Supported Languages · Packages
Most Read
- Conversational Intelligence — About
- AI Agents — About
- Speech Recognition — Supported Languages and Models
- Text-to-Speech — Supported Languages and Voices
- AI Agents — Requirements
- Text-to-Speech — Best Practices
- AQM — Agentic Evaluation
Platform & Deployment
SESTEK products are available as SaaS (Sestek-managed cloud) or on-premises (customer-managed Kubernetes). Both deployment models are supported with full documentation covering topology, prerequisites, monitoring, and high availability.
→ Platform Overview
→ Security
→ Scalability
→ High Availability & Disaster Recovery