Side-by-side

Same test case rendered across multiple models. Each row corresponds to a single prompt; play any model's clip to A/B them directly.

Casemoss-tts-localmoss-tts-v15moss-tts-dmoss-sfxmoss-voice-generator

1.1-short

1-base-en

Hello, this is the first sentence.

RTF 4.64× · 9.7s
RTF 8.02× · 23.7s
RTF 3.68× · 6.5s
http_error

1.2-medium

1-base-en

The quick brown fox jumps over the lazy dog, and afterwards goes to sleep.

RTF 3.70× · 28.7s
RTF 1.79× · 8.6s
RTF 1.79× · 8.2s
RTF 1.21× · 12.2s

1.3-question

1-base-en

Could you please confirm whether the deployment succeeded?

RTF 4.54× · 10.5s
RTF 2.16× · 6.6s
RTF 2.04× · 5.7s
RTF 1.06× · 10.6s

1.4-exclamation

1-base-en

Watch out, that is dangerous!

RTF 4.60× · 13.3s
RTF 1.58× · 8.9s
RTF 3.20× · 5.9s
RTF 1.21× · 12.1s

1.5-long-paragraph

1-base-en

The deployment process began at six in the morning. By half past seven, the first replicas were warm and serving traffic. Engineers checked the dashboards every few minutes, watching for the subtle latency increase that always preceded a regression. The new model had been tested for weeks in staging, but production traffic exposed edge cases that no synthetic load could simulate.

RTF 3.63× · 87.2s
RTF 1.24× · 26.2s
RTF 1.23× · 25.6s
RTF 1.00× · 10.1s

11.1-empty

11-failures
RTF 5.50× · 4.8s
RTF 3.81× · 4.9s
RTF 1.47× · 14.4s
RTF 1.34× · 13.5s

11.2-punctuation-only

11-failures

!?...?!

RTF 5.75× · 3.7s
RTF 6.46× · 4.1s
RTF 2.47× · 6.5s
RTF 1.29× · 13.0s

11.3-mixed-script

11-failures

Hello 世界 مرحبا こんにちは namaste

RTF 4.14× · 13.2s
RTF 2.18× · 7.2s
RTF 2.04× · 5.2s
RTF 1.30× · 13.1s

11.4-symbols

11-failures

$1,234.56 (75% off) @ 3PM EST

RTF 3.93× · 16.3s
RTF 1.51× · 11.9s
RTF 1.57× · 6.5s
RTF 1.25× · 12.6s

11.5-markdown-residue

11-failures

<b>Hello</b> **world** _italic_

error
RTF 1.96× · 8.0s
RTF 2.07× · 5.8s
RTF 1.31× · 13.2s

2.1-zh

2-multilingual

你好,今天天气很好,适合出去散步。

RTF 4.06× · 11.7s
RTF 2.26× · 8.3s
RTF 2.26× · 6.5s
RTF 1.38× · 13.9s

2.2-ja

2-multilingual

こんにちは、お元気ですか?今日もいい天気ですね。

RTF 4.65× · 19.0s
RTF 3.77× · 17.8s
RTF 3.27× · 9.7s
RTF 2.42× · 24.2s

2.3-es

2-multilingual

Hola, ¿cómo estás hoy? Espero que muy bien.

RTF 5.64× · 15.8s
RTF 2.29× · 10.4s
RTF 1.97× · 5.5s
http_error

2.4-fr

2-multilingual

Bonjour, comment allez-vous aujourd'hui?

RTF 5.20× · 10.0s
RTF 2.46× · 7.5s
RTF 3.36× · 7.8s
RTF 4.62× · 46.5s

2.5-ar

2-multilingual

مرحبا، كيف حالك اليوم؟ أتمنى أن تكون بخير.

RTF 4.16× · 16.3s
RTF 2.42× · 10.7s
RTF 2.03× · 6.7s
RTF 1.41× · 14.2s

2.6-hi

2-multilingual

नमस्ते, आप कैसे हैं? आज मौसम बहुत अच्छा है।

RTF 3.94× · 17.7s
RTF 2.57× · 13.6s
RTF 1.63× · 7.0s
RTF 1.31× · 13.3s

3.1-en-zh

3-code-switching

I'll meet you at the 茶馆 at three in the afternoon.

RTF 8.52× · 36.8s
RTF 2.17× · 8.9s
RTF 1.45× · 8.9s
RTF 1.69× · 17.0s

3.2-en-es

3-code-switching

She said hola and then waved goodbye.

RTF 4.64× · 11.1s
RTF 2.90× · 8.6s
RTF 1.61× · 6.3s
RTF 1.25× · 12.6s

3.3-en-ja

3-code-switching

The Japanese word for thank you is ありがとう.

RTF 4.35× · 12.2s
RTF 4.00× · 10.2s
RTF 1.91× · 5.8s
RTF 1.27× · 12.8s

4.1-clone-clean-5s

4-cloning

The quick brown fox jumps over the lazy dog.

error
RTF 2.04× · 8.0s
RTF 2.03× · 5.5s
RTF 1.29× · 13.0s

4.10-clone-cross-lang

4-cloning

你好,今天天气很好。

error
RTF 2.42× · 6.6s
RTF 2.13× · 4.8s
RTF 2.29× · 23.0s

4.2-clone-clean-15s

4-cloning

The quick brown fox jumps over the lazy dog.

error
RTF 1.63× · 9.0s
RTF 2.23× · 4.8s
RTF 1.31× · 13.2s

4.3-clone-clean-30s

4-cloning

The quick brown fox jumps over the lazy dog.

error
RTF 2.02× · 7.4s
RTF 3.57× · 7.4s
RTF 1.31× · 13.2s

4.4-clone-noisy

4-cloning

The quick brown fox jumps over the lazy dog.

error
RTF 1.92× · 7.4s
RTF 1.96× · 5.5s
RTF 1.25× · 12.6s

4.5-clone-accented

4-cloning

The quick brown fox jumps over the lazy dog.

error
RTF 1.43× · 13.1s
RTF 2.33× · 6.2s
RTF 1.25× · 12.6s

4.6-clone-whispered

4-cloning

The quick brown fox jumps over the lazy dog.

error
RTF 2.05× · 7.1s
RTF 2.35× · 7.2s
RTF 1.28× · 12.9s

4.7-clone-raspy

4-cloning

The quick brown fox jumps over the lazy dog.

error
RTF 1.73× · 9.0s
RTF 1.80× · 6.5s
RTF 1.31× · 13.2s

4.8-clone-reverb

4-cloning

The quick brown fox jumps over the lazy dog.

error
RTF 1.95× · 7.2s
RTF 1.85× · 5.5s
RTF 1.29× · 13.0s

4.9-clone-child

4-cloning

The quick brown fox jumps over the lazy dog.

error
RTF 2.06× · 6.9s
RTF 1.95× · 5.0s
RTF 1.45× · 14.6s

6.1-irish-name

6-pronunciation

Her name is Saoirse Ronan.

RTF 4.23× · 14.2s
RTF 3.88× · 5.9s
RTF 2.17× · 6.2s
RTF 1.30× · 13.1s

6.2-brand-hyundai

6-pronunciation

I drive a Hyundai Ioniq.

RTF 4.55× · 7.3s
RTF 2.55× · 8.6s
RTF 1.96× · 6.1s
RTF 1.28× · 12.9s

6.3-gif-vs-jif

6-pronunciation

Save the file as a GIF and not a JPEG.

RTF 4.26× · 10.2s
RTF 2.35× · 7.9s
RTF 1.81× · 6.7s
RTF 1.35× · 13.6s

6.4-sql

6-pronunciation

We use SQL to query the database.

RTF 4.86× · 12.0s
RTF 2.58× · 7.0s
RTF 3.37× · 8.9s
RTF 1.27× · 12.8s

7.1-pause-short

7-pauses

Wait, [pause 0.5s] for it.

RTF 4.39× · 11.6s
RTF 3.72× · 5.4s
RTF 2.27× · 9.6s
RTF 1.49× · 15.1s

7.2-pause-medium

7-pauses

She paused, [pause 1.5s] then continued.

RTF 4.09× · 16.3s
RTF 2.43× · 8.6s
RTF 1.80× · 8.7s
RTF 1.26× · 12.7s

7.3-pause-long

7-pauses

And then [pause 3.0s] silence.

RTF 4.11× · 19.1s
RTF 1.97× · 8.7s
RTF 2.92× · 11.7s
RTF 1.27× · 12.8s

ext-clone-out

4-cloning

This is a cloning test using a reference recording.

· 32.0s
RTF 5.49× · 36.0s
RTF 4.93× · 28.0s