Where is Sestek located?

Sestek is headquartered in Istanbul, Turkey.

How many employees does Sestek have?

As of May 31, 2026, the latest employee count at Sestek is 202.

Is Sestek a funded company?

Sestek is a funded company, having raised a total of $***** in its 1st and only funding round.

Where does Sestek rank among its competitors?

Sestek ranks 501st amongst 1777 active competitors, of which 217 are funded. It stands 11th in terms of total funding among its competitors. The most recent competitor to raise funding was Respond.io, which secured $62.5M in Jun, 2026.

Who are the top competitors of Sestek?

Sestek's top competitors include NICE, Forethought AI and Invoca. Among them, Respond.io secured the most recent funding round in June, 2026.

Sestek - 2026 Company Profile, Team, Funding & Competitors

Sestek is an acquired company based in Istanbul (Turkey), founded in 2000 by Serdar Karadayi. It operates as a Developer of conversational AI solutions for customer service automation. The company has 1777 active competitors, including 217 funded and 135 that have exited. Its top competitors include companies like NICE, Forethought AI and Invoca.

Company Details

Developer of conversational AI solutions for customer service automation. The company provides tools for virtual agents, speech recognition, text-to-speech, and interaction analytics. Its offerings include automated quality management, real-time guidance, and customer authentication. The company’s solutions cater to industries such as banking, call centers, insurance, and telecommunications.

Website: www.sestek.com/
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Key Metrics

Founded Year

2000

Location

Istanbul, Turkey

Stage

Acquired

Investors

Innogate

Ranked

501^st among 1777 active competitors

Employee Count

202 as on May 31, 2026

Similar Companies

Forethought AI & 2526 more

Exit Details

Acquired by Unifonic (Oct 12, 2022)

View Sestek's full profile

Sestek got acquired by Unifonic on Oct 12, 2022.

Click here to take a look at Sestek's acquisition in detail

Sestek is a funded company. Sestek has 1 institutional investor.

View details of Sestek's funding rounds and investors

The founders of Sestek is Serdar Karadayi.

Here are the details of Sestek's key team members:

Serdar Karadayi: Founder of Sestek.

View details of Sestek's Founder profiles and Board Members

Sestek's employee count trend

Sestek has 202 employees as of May 26. Here is Sestek's employee count trend over the years:

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Top competitors of Sestek include NICE, Forethought AI and Invoca. Here is the list of Top 10 competitors of Sestek, ranked by Tracxn score:

Rank	Company Details	Short Description	Total Funding	Investors	Tracxn Score
1st	NICE 1986, Hoboken (United States), Public	Cloud based platform offering customer experience management software	-	HarbourVest Partners, Morgan Stanley & 9 others	75/100
2nd	Forethought AI 2017, San Francisco (United States), Acquired	Provider of an AI platform for customer support and service teams	$117M	New Enterprise Associates, Blue Cloud Ventures ... & 34 others	72/100
3rd	Invoca 2008, Santa Barbara (United States), Series F	Developer of conversation analytics software for marketing, sales, and contact centers	$202M	Accel, SLW & 21 others	70/100
4th	Nuance 1992, London (United Kingdom), Acquired	Conversational AI solutions for enterprises	$15.6M	Intel, El Toro Capital Management & 20 others	70/100
5th	Bandwidth 1999, Raleigh (United States), Public	Cloud-based enterprise collaboration platform for VoIP communication management	$21.9M	Carmichael Partners, Herald Investment Management ... & 5 others	69/100
6th	Gradient Labs 2023, London (United Kingdom), Series A	AI agents to automate manual and repetitive tasks	$30M	LocalGlobe, CommerzVentures & 16 others	68/100
7th	RingOver 2005, Montrouge (France), Series B	Provider of cloud telephony software for business communication and collaboration	$33.4M	Bpifrance, Orange Ventures & 1 others	67/100
8th	Capacity 2017, St. Louis (United States), Series D	AI based information and data integration management solution	$286M	Rice Park Capital Management, IAG Capital Partners ... & 9 others	67/100
9th	Luminoso 2010, Boston (United States), Series B	AI based text analytics solution provider	$31.7M	Raptor Group, DVI Equity Partners & 12 others	66/100
10th	Respond.io 2016, Kuala Lumpur (Malaysia), Series B	Provider of AI-powered platform unifying customer touchpoints and CRM integrations	$71.3M	KTB Network, Beyond Ventures & 9 others	66/100
501st	Sestek 2000, Istanbul (Turkey), Acquired	Developer of conversational AI solutions for customer service automation	-	Innogate	27/100