# Whisper Large-v3 / Turbo TR FT: Common Voice + Bilkent + Mozilla TR + Custom Corpus

> Source: https://sukruyusufkaya.com/learn/fine-tuning-cookbook/ftc-whisper-tr-fine-tuning
> Updated: 2026-08-15T20:37:12.469Z
> Category: Fine-Tuning Cookbook (Model-by-Model)
> Module: Part VII — Speech & Audio Fine-Tuning
**TLDR:** Türkçe Whisper FT — RTX 4090'da rahat (large-v3 ~6 GB, large-v3-turbo ~3 GB). Common Voice TR (180 saat), Bilkent TR corpus, Mozilla TR. WER (Word Error Rate) ölçümü, alfa/diacritic doğruluğu, Türkçe-spesifik tokenize fixes. Baseline WER %12 → FT WER %6 (~2× iyileşme).