# Closed-FT vs Self-Hosted FT Karar Matrisi: TCO + Latency + Data Residency + KVKK

> Source: https://sukruyusufkaya.com/learn/fine-tuning-cookbook/ftc-closed-vs-self-hosted-decision-matrix
> Updated: 2026-08-16T06:05:20.080Z
> Category: Fine-Tuning Cookbook (Model-by-Model)
> Module: Part XIV — Closed-Source API Fine-Tuning
**TLDR:** Cookbook'un Part XIV özet kararı: closed API FT vs self-hosted open FT. 6 boyutta karşılaştırma: TCO (1 yıllık tahmini), latency (P50/P95), data residency (TR/EU/US), KVKK uyumu, model özgürlüğü (versioning, lisans, deploy), kalite. 4 use-case için tipik kararlar.