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TTS Bench — Speed — 2026-06-02_2126

Rig: windows-5090 — AMD Ryzen 9 9950X3D 16-Core Processor (16C) · NVIDIA GeForce RTX 5090 32GB · 126 GB RAM · Windows 11

Label: cloning · chris_hemsworth_15s · outetts — ref chris_hemsworth_15s.wav

TTFA = time to first audio (ms; lower is better). RTFx = realtime speed (× realtime; higher is better; e.g. 10× means 10 sec of audio generated per 1 sec of compute). Cold = first run after process start; warm = subsequent runs.

Speed winners

Fastest (this cloning run): OuteTTS 1.0 1B (cuda) — 0.30× warm RTFx, 17.44s warm TTFA

Model	Device	TTFA cold	TTFA warm	RTFx cold	RTFx warm	Peak RAM	Peak VRAM	Size	Released
OuteTTS 1.0 1B	cuda	18.32s	17.44s	0.30×	0.30×	3.64 GB	3.56 GB	1B	Apr 2025