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TTS Bench — Speed — 2026-06-02_2133

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

Label: default voice · outetts

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 predefined-voice: no data

Fastest cloning-capable: OuteTTS 1.0 1B (cuda) — 0.33× warm RTFx, 24.27s warm TTFA

Model	Device	TTFA cold	TTFA warm	RTFx cold	RTFx warm	Peak RAM	Peak VRAM	Size	Released
OuteTTS 1.0 1B	cuda	25.01s	24.27s	0.32×	0.33×	2.59 GB	3.67 GB	1B	Apr 2025