2.3M+
followers · 28 Sep 2026
Daily inspiration, short video and carousels
FollowEntrepreneurship, business and technology since 2014
4.5 million followers. One mindset.
Girişimci Kafası is a media and community brand that publishes content on entrepreneurship, business and technology every day. From Instagram to LinkedIn, from our podcast to our book, it is for anyone who wants to turn an idea into a business.
followers
monthly views
12years
publishing without a break
47
podcast episodes
Figures as of 28 September 2026, totalled across all platforms.
On every platform, in its own language.
Quick inspiration on Instagram, the business agenda on LinkedIn, long conversations on the podcast. Wherever you like to follow.
1.3M+
followers · 28 Sep 2026
Business, leadership and careers
Follow764K+
followers
Video and daily posts
FollowYouTube
@girisimci-kafasi38.6K
subscribers · Sep 2026
Interviews and conversations
SubscribeX
@kafasigirisimci37.5K
followers
News and short takes
FollowSpotify, Apple
Kafa Sohbetler47
episodes · 4.5/5 on Apple
Conversations with founders (in Turkish)
ListenLatest articles (in Turkish)
The newest articles on our blog, written in Turkish. If there is a topic you are curious about, you can also browse by subject below.
Startup Graveyard October 2026
Why did 1,686 startups shut down?
Including 112 stories from Turkey. Start here for the reasons they closed, familiar cases and the latest additions. Figures as of October 2026.
Why did they shut down most often?
The most common reasons among the 329 startups whose story we have written up, as of October 2026. Click a reason to open the list of those startups (in Turkish).
Featured stories (in Turkish)
-
TurkeyFounded 2001 · Closed 2022
GittiGidiyor
Acquired and shut downeBay, Türkiye pazarındaki rekabet dinamiklerini gerekçe göstererek platformu 2022'de kapattı.
Read the story → -
TurkeyFounded 2008 · Closed 2019
Markafoni
Business model failedDavetiyeli indirim modeli tüketiciye eskisi kadar cazip gelmeyince gelir gider dengesi kurulamadı.
Read the story → -
TurkeyFounded 2015 · Closed 2019
Sinemia
Regulation and legal issues7163 sayılı kanunla sinemalardaki toplu bilet indirimleri sona erince indirimli abonelik modeli uygulanamaz hale geldi.
Read the story → -
USAFounded 2018 · Closed 2020
Quibi
No market need1,75 milyar dolar toplayan kısa video servisi, abone hedeflerinin çok gerisinde kalınca açılıştan altı ay sonra kapanma kararı aldı.
Read the story →
Recently added
Tools and Founder Workshop (in Turkish)
Make decisions with numbers, not gut feeling. Four free calculators. No sign-up needed; the calculation happens in your browser.
-
Runway calculator
How many months will your cash last, and in which month does it run out? Shows your monthly net burn and break-even month.
Calculate → -
Founder equity calculator
Work out the split between co-founders with six weighted criteria and see the vesting schedule.
Calculate → -
LTV/CAC calculator
Customer lifetime, LTV, LTV/CAC ratio and CAC payback period, with what the ratio means.
Calculate → -
Equity dilution calculator
Pre-money, post-money, the investor's stake and the founders' new stakes, with a before and after table.
Calculate →
Founder Workshop
Your founder brand on LinkedIn, in your own words.
You work in a small group through live sessions; you write your own posts and get feedback on what you write.
Dates and fees are set according to applications.
See the workshop (in Turkish)Listen and read
A podcast on the go, a book at home. Two ways to follow Girişimci Kafası in long form, both in Turkish.
Kafa Sohbetler4.5/5 on Apple Podcasts
Founders talk, we listen.
47 episodes since 2020, in Turkish. Conversations from the field, from starting a company to super intelligence, from pricing to mental clarity.
Latest episode · #47 · 22 October 2025
Zihinsel Berraklığın Önemi
0:004:10
17th
printing
printing
Girişimci Kafasıyla Düşün
12 years of experience in one book.
An entrepreneurship guide compiled, with the help of super intelligence, from the articles, podcasts and talks Kaan Gülten has produced since 2012. 14 chapters, from the “rule of splitting work into five” to crisis management. The book is in Turkish.
Platin İş Kitapları Awards
Why we exist
A trader's mind focuses on money for tomorrow; an entrepreneurial mind focuses on being useful for the future.
Kaan Gülten, founder
We started Girişimci Kafası to share what we learn instead of keeping it to ourselves. Sometimes an experience, sometimes a question asked at the right moment, sometimes a small piece of advice is enough for someone to take the first step. That is what we create for, every day.
Read our story01
Usefulness
We share what will be useful to you first.
02
Sharing
We don't keep experience to ourselves, and we talk about our mistakes too.
03
Action
We break big ideas into small steps you can actually take.
For Brands
Take your brand where entrepreneurs look every day.
On Instagram, LinkedIn, our podcast and at events, in the format that suits your audience. From a single post to a season-long media partnership.
13K+
average likes per Instagram post
September 2026 · HypeAuditor
26+
brand projects
Official portfolio
What does a single post do?
13K+
likes on an average Instagram post
2.5M
views on our best X post
250 million monthly views, about 3 times the population of Turkey.
Choose the format that suits you
01
Post or Reels · Story · Reels editing and publishing · Hosted live stream · Broadcast channel post
02
Post · GK Startup Bülteni feature · Live event
03
X
Post · Repost
04
YouTube
Podcast episode on YouTube · Founder or company story video
05
Kafa Sohbetler podcast
Title sponsorship · Episode sponsorship · Guest episode sponsorship
06
Website
Article or news story · Article from a podcast episode
Founder
Kaan Gülten
SEO Hocası, founder of Webtures and Brantial, and CEO of Webtures. He started Girişimci Kafası in 2014 to share what he had learned with more people. Keynote speaker, angel investor and author of the book Girişimci Kafasıyla Düşün. Our story →
kaangulten.com ↗