SESTEK — AI for Customer Support & Experience

Automate customer support and analyze 100% of conversations with a full-stack conversational AI platform.

Leverage market-leading speech recognition and agentic AI to enhance IVR, automate quality management, and assist agents in real time.

Best forAI for Customer Service

Differentiator>97% speech recognition accuracy with 100% in-house developed technology.

ProofUsed by 550+ brands with a 100% project delivery success rate.

Explore SESTEK

Pricing on request

8.7 Zekai

Enterprise Conversational Suite

AI for Customer Support & Experience

Ease of Use

7.0

Accuracy

9.6

Value

8.6

Time Saving

9.2

550+ brandsUsers

8.7/10Zekai Score

Conversational AISpeech AnalyticsQuality AutomationAgent AssistVoice Biometrics

📊 Independently reviewed and scored. How we score →

✍️ Reviewed by Zekai Editorial Team · Updated August 7, 2026

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Zekai Verdict

What is it?: SESTEK provides an end-to-end conversational AI platform for enterprise contact centers.
Best for: Best for large-scale contact centers needing a customizable, end-to-end conversational AI and analytics platform with…
Not ideal for: Pricing is not public, requiring a demo and sales contact
Price: Pricing on request
Zekai Score: 8.7/10

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⚡ Quick answer

For customer support and experience professionals in large enterprises, SESTEK is a top-tier conversational AI platform. Its key advantage is a market-leading speech recognition accuracy of over 97%, built on 100% proprietary technology. This ensures high-quality data for automating quality management, improving IVR, and providing real-time agent assistance, making it ideal for organizations that prioritize performance and customization.

CategoryConversational AI Platform

Best ForEnterprise contact centers

Price FromPricing on request

FreeNo

Differentiator>97% speech recognition accuracy with 100% in-house developed technology.

ProofUsed by 550+ brands with a 100% project delivery success rate.

Rating8.7/10

📖 About SESTEK

SESTEK provides an end-to-end conversational AI platform for enterprise contact centers. It uses a proprietary tech stack, including speech recognition and NLP, to automate customer interactions, analyze conversations for performance insights, and provide real-time assistance to agents.

Real Impact

Before & After

❌ Before

Manual call sampling for quality management

<5% calls reviewed

✅ After

Automated analysis of 100% of customer interactions

100% calls analyzed

Prompt Templates

Try it with these prompts

Copy any prompt and paste it directly into the tool.

Analyze customer service calls for sentiment

Analyze the provided customer service call transcript to identify overall customer sentiment, key emotional drivers, and areas of dissatisfaction. Summarize the findings and suggest improvements for agent training.

Improve contact center efficiency with AI insights

Use conversational AI to analyze contact center performance data. Identify bottlenecks in customer interactions and provide actionable insights to enhance agent efficiency and reduce call handling times.

Develop personalized virtual agent responses

Leverage natural language processing to create more personalized and effective responses for virtual agents. Analyze common customer queries and design dialogue flows that improve resolution rates.

AI Prompts

Prompts for Customer Support

Prompt 01 Acknowledge Receipt & Set Expectations

Draft a first-contact reply for a ticket about [[TICKET_TOPIC]]. 1. Acknowledge the user's specific issue: `[[USER_ISSUE_SUMMARY]]`. 2. Confirm receipt of their ticket and provide the ticket ID: `[[TICKET_ID]]`. 3. State our standard re…

Prompt 02 Request More Information (Politely)

The user's request about `[[TICKET_TOPIC]]` is missing key information. Draft a polite reply that: 1. Thanks them for their message. 2. Clearly states the specific information we need to proceed. List these as bullet points: * `[[R…

Prompt 03 Answer a

Generate a step-by-step guide answering the user's question: `[[USER_QUESTION]]`. The user is on the `[[USER_PLAN_LEVEL]]` plan. 1. Start with a direct confirmation: "Yes, you can do that. Here are the steps:" 2. Use a numbered list for…

See all 25 AI prompts for Customer Support →

Social Proof

Trusted by 550+ brands

550+ brands professionals using this tool

Ease of Use

7.0

Accuracy

9.6

Value

8.6

Time Saving

9.2

"The ability to analyze 100% of our calls with SESTEK's Interaction Analytics has been a game-changer. We're identifying customer friction points we never knew existed and our QM process is now minutes, not days."

Sarah K., Head of CX · June 2026

"We chose SESTEK for their speech recognition accuracy, and it delivered. Our conversational IVR is resolving more issues on the first contact, which has had a direct, positive impact on our operational costs."

David M., Contact Center Director · May 2026

"The platform is incredibly powerful, but be prepared for a hands-on implementation. It's not a plug-and-play solution and required more internal resources than we initially planned. The end result is worth it, though."

Emily R., Operations Manager · April 2026

"Our agents love the Agent Copilot. They get real-time prompts and information during calls, which has boosted their confidence and our FCR rates. It's like having an expert whispering in their ear."

Michael B., Agent Supervisor · March 2026

550+ brands+ professionals are already using this tool.

See Plans & Pricing →

Connects With

SESTEK integrations

WhatsApp SMS Voice Channels Chat Channels

Setup complexity: Enterprise-Grade

Comparison

Best SESTEK alternatives

When comparing SESTEK to a broad-suite competitor like NICE, the choice depends on priorities. Choose SESTEK if your primary need is best-in-class speech recognition accuracy (>97%) and the flexibility of a fully in-house, customizable tech stack with on-premise deployment options. SESTEK is ideal for organizations wanting deep technological control. Opt for NICE if your organization is already heavily invested in the NICE ecosystem or requires an all-encompassing platform with the widest possible range of integrated CX tools from a single, established vendor, even if some individual components aren't as specialized.

The decision

Is SESTEK worth it?

Return on investment

By automating quality management processes that take hours manually down to minutes, SESTEK allows supervisors to focus on strategic coaching rather than repetitive call sampling.

Built for

Enterprise CX leaders, call center directors, and quality management supervisors.

Effort to adopt

Enterprise-Grade

Compliance

Compliance posture not publicly documented — verify with vendor.

Who It's For

Why Customer Support & Experience choose this tool

🎯

Built for

Best for large-scale contact centers needing a customizable, end-to-end conversational AI and analytics platform with high-accuracy speech recognition.

In-Depth Overview

For customer experience leaders managing large-scale operations, SESTEK offers a robust, high-performance platform backed by over 20 years of experience. Its key differentiator is a market-leading speech recognition accuracy rate of over 97% in real-world environments, ensuring that analytics and automation are built on reliable data. Unlike platforms that assemble third-party technologies, SESTEK develops 100% of its core tech in-house with a team of over 100 R&D staff, allowing for deep customization and control. This commitment to quality is proven by a 100% project delivery success rate across more than 550 brands. The platform is also cloud-agnostic, offering deployment on-premise, on a public cloud, or on a private cloud to meet specific security and infrastructure requirements. By analyzing 100% of customer conversations, SESTEK moves teams beyond manual sampling, providing comprehensive insights to improve agent performance, streamline quality management, and enhance the overall customer journey.

Key Use Cases

🎧

Automate Quality Management and Agent Scoring

Call Center Manager

Use SESTEK's AQM to automatically analyze 100% of calls for script adherence, sentiment, and compliance. Get objective agent performance data without manual sampling.

QM process time reduced to minutes

✓ Pros

Market-leading speech recognition accuracy (>97%)

100% in-house developed technology stack

Flexible deployment: on-premise, public, or private cloud

Analyzes 100% of customer conversations for QM and insights

20+ years of industry experience with a 100% project delivery rate

· Cons

Pricing is not public, requiring a demo and sales contact

Likely requires significant implementation and integration effort

No self-service or free trial options available

May be overly complex for small to medium-sized businesses

⚡ Editorial Verdict

SESTEK is a powerful, enterprise-grade suite for organizations that want to own their conversational AI strategy with a high-performance, customizable solution. Its impressive speech recognition accuracy and in-house technology are major strengths. The primary trade-off is its enterprise focus, meaning no self-service options or public pricing, which points to a significant investment and a high-touch implementation process.

See all 369 AI tools for Customer Support → Browse the AI Directory →

Questions & Answers

Frequently asked questions

What is SESTEK?

SESTEK is a conversational automation company that provides AI-powered solutions for contact centers, including Conversational IVR, Interaction Analytics, Automated Quality Management, and Agent Assist, built on its proprietary speech recognition and NLP technologies.

How accurate is SESTEK's speech recognition?

SESTEK claims a market-leading speech recognition accuracy rate of over 97% in real-world environments, which can be fine-tuned on customer-specific data.

Can SESTEK be deployed on-premise?

Yes, SESTEK is cloud-agnostic and its solutions can be deployed on-premise, on a public cloud, or on a private cloud, depending on your organization's requirements.

What is the best conversational AI platform for a large, multi-channel call center?

For large, multi-channel call centers, SESTEK is a strong contender due to its comprehensive, in-house technology stack and flexible deployment options (on-premise or cloud). It is designed for enterprise-scale operations.

Which tool provides the most accurate speech recognition for customer service analytics?

SESTEK claims a market-leading speech recognition accuracy rate of over 97%, making it a top choice for customer service teams who need highly reliable data for their analytics and automation initiatives.

Which AI tool offers real-time agent assistance and guidance during live calls?

SESTEK offers an 'Agent Copilot' (Agent Assist) feature that provides real-time AI-powered guidance and information to agents during live calls, helping improve first-call resolution and agent confidence.

Last reviewed: June 2026 — Assessed conversational AI capabilities, analytics features, and deployment options for enterprise contact centers.

Plans & Pricing

SESTEK pricing and plans

Pro

Pricing on request

Custom pricing is provided after a demo and consultation. No public pricing tiers are available.

Start Pro Plan

Enterprise

Pricing on request

Tailored for teams and large organisations.

Contact Sales

Prices and features are updated regularly but can change at any time — always confirm on the official website. Some links on this page are affiliate links.

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SESTEK Alternatives (2026)

The best alternatives to SESTEK — every tool below is reviewed and scored by Zekai.

Compare	SESTEK	DeepL	Vapi
Zekai Score	8.7/10	9.4/10	9.2/10
Rating	4.5/5	4.5/5	4.5/5
Pricing	Pricing on request	$26.00/mo	Usage-based call minutes (60+ minutes included)
Free tier	No	Yes	No
Best for	Best for large-scale contact centers needing a cus…	Delivering fast, accurate, and secure multilingual…	Enterprise customer support teams aiming to automa…

DeepL Vapi Retell AI Intercom Voiceflow Sierra Gorgias Dovetail

Free guide

Take it with you

Getting Started with SESTEK: A Guide to Contact Center Automation

**Benchmark Your CX:** Identify key workflows in your IVR and Quality Management process ripe for automation.
**Harness Accurate Data:** Understand how >97% speech recognition accuracy forms the foundation for meaningful analytics and reliable automation.
**Explore Core Use Cases:** Discover the impact of Conversational IVR, Agent Assist, and Interaction Analytics on your KPIs.

**Choose Your Deployment:** Evaluate the benefits of on-premise, private, or public cloud deployment for your security and infrastructure needs.
**Unlock Full Visibility:** Learn how to move from manual call sampling to analyzing 100% of customer conversations for deep insights.

+3 more steps inside the guide

Send me the full guide

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Disclaimer

Zekai is an independent AI tools directory. We are not affiliated with, endorsed by, or officially connected to SESTEK unless clearly stated. All product names, logos, and brands are the property of their respective owners and are used for identification purposes only. The information on this page — including pricing, features, and availability — is general information, may have changed since our last review, and is not professional advice. Zekai Scores and verdicts are our editorial opinion. Some outbound links are affiliate links that may earn us a commission at no extra cost to you. Spotted outdated or incorrect information? Request a correction →

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SESTEK — AI for Customer Support & Experience

Top AI for Customer Support & Experience picks

Before & After

Try it with these prompts

Prompts for Customer Support

Trusted by 550+ brands

SESTEK integrations

Best SESTEK alternatives

Is SESTEK worth it?