Tunga Bayrak

Co-Founder & CEO of @Freyavoice (YC S25)
UPenn dropout

[Tunga Bayrak @TungaBayrak]

Just getting started!

[Design Arena @DesignArena]

BREAKING: Freya TTS Adam v1 by @FreyaVoice takes the #1 spot on AudioRealismBench with an Elo of 1418.

The model ranks ahead of Bland Speech v3 by @usebland and Kalpa TTS Beta v0.1 by @KalpaLabsAI.

AudioRealismBench measures how human-like speech sounds through blind comparisons by vetted native speakers across phone agents, conversational assistants, and spoken explainers.

Congratulations to @TungaBayrak and the entire @FreyaVoice team. We’re excited to see what comes next!

[Grace Li @grx_xce]

Huge congratulations to the @FreyaVoice team for launching the most human-like AI voices in the world!

[Tunga Bayrak @TungaBayrak]

This might be the best video editor i ve ever seen!

[Tom Yang @tomyang11_]

Introducing Kestroll: your AI video editor

What can it do?
- Stylize and caption your clips for socials
- Sync and cut multi-cam recordings
- Clip viral shorts for social media
- Build creative rough cuts for polish in Resolve and Premiere
- Organize and analyze your footage for trends

Try it out for free at: https://t.co/VCCtjXCM8W

[Tunga Bayrak @TungaBayrak]

Today we’re releasing Adam and Eve, the most human-like AI voices ever built.

Adam ranks #1 among AI models on @DesignArena’s AudioRealismBench.

We believe we’ve crossed the uncanny valley. API access on our Website!

Listen: https://t.co/gHXurz0gSc

Leaderboard: https://t.co/cQmbwyBqrB

Special thanks to @alpsencerozturk, @ahmeterdempmk, and the entire Freya team for making this possible.

We’re just getting started. Join us!

[Emre @Emrre_isik]

$400M in annual supplier spend already runs through @usespaceflow (YC S26): AI employees that keep large enterprises supplied and margins protected, and prove every task they complete.

SAP runs most of the world's largest companies. The majority still run it on-premise, customized over twenty years, and that whole ecosystem got skipped by the AI wave.

The AI employees keep supply plans in line with real demand, prepare orders and the numbers behind every planning meeting, and read supplier quotes in any format, then stage each action for approval. The ERP stays the system of record. The models run wherever the data must live, including the company's own datacenter. Hundreds of users are in production daily, one customer cut off-contract spending by 42%, and already canceled three planned hires.

Under it all is one idea: AI got good at code because code can be checked. SpaceFlow makes enterprise work checkable the same way. Every completed task is scored against the company's own numbers and becomes an eval, so the AI keeps getting better at that specific company, and finance sees exactly what it saved.

Before YC, we built an autonomous procurement engine with a medical manufacturer and saw the gap firsthand. Our bet: the ERP world is the largest ecosystem in enterprise software, and whoever makes it workable for AI, and provable, wins the next decade.

We are now working with key players across the SAP ecosystem to bring this to the rest of it.

[Berkay Adlim @adlim_berkay]

Hoşgeldin, @jasonfreedman !

Sevgili arkadaşım Jason’u geçtiğimiz iki hafta boyunca Türkiye’de ağırladık.

@ycombinator'a başvurmak isteyen Türk kurucuları whatsapp grubumuza bekleriz 🙂🙂🙂

[Tunga Bayrak @TungaBayrak]

@ycombinator @proliferateai let’s goo

[Tunga Bayrak @TungaBayrak]

Thank you @umutgunbak for making this a reality and thanks @fal for the interstellar inference.

Have been working our asses off for the new TTS model, shoutout @FreyaVoice team

Looking forward to giving everyone a taste of freya-tr-v01

[Umut Gunbak @umutgunbak]

We are co-hosting a Voice AI Hackathon with @FreyaVoice in Istanbul

@TungaBayrak reached out to me with the idea a few weeks ago as they want to meet great Turkish talent, and we decided to co-host as we love contributing to the ecosystem

Freya has built their own model, and it will be powered by @fal's inference engine during the hackathon (which is exciting!)

It's a great opportunity to build your own voice agent and meet @freyavoice & @fal teams

[Umut Gunbak @umutgunbak]

We are co-hosting a Voice AI Hackathon with @FreyaVoice in Istanbul

@TungaBayrak reached out to me with the idea a few weeks ago as they want to meet great Turkish talent, and we decided to co-host as we love contributing to the ecosystem

Freya has built their own model, and it will be powered by @fal's inference engine during the hackathon (which is exciting!)

It's a great opportunity to build your own voice agent and meet @freyavoice & @fal teams

[Komünite —— Bir defa yap, hep sat! @komunitecomtr]

Sessizliği bozuyoruz! 🎙️

Komünite sahnesinde, @FreyaVoice ve @fal ile güçlerimizi birleştiriyoruz: Voice AI Hackathon'u başlatıyoruz. Tuşlamayı bırakıp, milisaniyelerle yarışan sesli yapay zeka deneyimleri tasarlayacak 15 ekipten biri olmaya hazır mısın?

Son Başvuru: 6 Şubat
Final: 15 Şubat, Komünite Space

Detaylı bilgi ve başvuru: https://t.co/rcVgGqDLTC

[Tunga Bayrak @TungaBayrak]

@skygodkingdom @imagineagi 🙌🙌🙌

[Imagine AI @imagineagi]

Signal Line, a new podcast from Y Combinator founders.

In this episode, we broke down the real journey with Freya (YC S25). Not the highlight reel. The actual decisions, pivots, and breakthroughs.

https://t.co/C30oajmzrJ

[Tunga Bayrak @TungaBayrak]

@skygodkingdom @brandonstarxel 😂

[Sky Yang @skygodkingdom]

320 YC founders. One private yacht. SF Bay sunset.

The most exclusive founder party of the season is happening next week.

If you're building something real:
1. Sign up: https://t.co/dfZzMb0nk7

Co-hosted by @imagineagi , @porterdotrun, Digipals, @awscloud, @Rippling , @rhobusiness, @MongoDB, @FreyaVoice, and Audrion.

[Neha @Neha_Suresh_M]

Had a really cool discussion with other voice AI builders @Vapi_AI - pretty neat how voice is penetrating into such diverse industries.

Thanks @TungaBayrak for organizing and @nikhilro_ for hosting this!

[Tunga Bayrak @TungaBayrak]

@ahmeterdempmk @khanacademy amazing!

[Ahmet Pamuk @ahmeterdempmk]

SAT math stress? our AI Tutor creates custom private lessons for ANY problem in seconds. 99%+ accuracy.

no more $200/hr tutors or rewatching @khanacademy videos 20x.

AI that adapts to YOU.

check out: app [dot] motionshark [dot] com

#SAT #SATPrep #TestPrep #CollegeAdmissions

[Tunga Bayrak @TungaBayrak]

@ycombinator @FreyaVoice very excited!

[Y Combinator @ycombinator]

Freya (@FreyaVoice) provides human-like, secure Voice AI agents for customer support & sales in financial services. They cut costs by 50% and improve the customer experience with instant 24/7 support that gets things done for customers.

https://t.co/AUrqrGF7iB

Congrats on the launch, @TungaBayrak and @TomasNepala!

[Richard Ou @YuhuangOu]

Join us in reshaping the Future of All Work. Forever.