Text to Speech AI Agents Music Audio to Text Voice Cloning Voice Design Marketplace More
Report Bug / Feature Request
Darwin TTS

Default

Standard English Neutral Darwin TTS

Default is a neutral AI voice powered by the Darwin TTS text-to-speech model. This standard-tier voice speaks English and delivers high-quality speech synthesis. With moderate generation speed and a quality rating of 4/5, Default is well-suited for cross-lingual voice cloning, multilingual narration with a single reference voice. The Darwin TTS engine is developed by FINAL-Bench under the Apache 2.0 license, making it safe for commercial use. Key capabilities include: voice cloning, cross-lingual, ffn-blended, 10 languages, qwen3 backbone. The Darwin TTS model also supports voice cloning — upload a short audio sample to create a custom voice that retains the same quality characteristics.

No ratings yet
Try This Voice All Darwin TTS Voices

Darwin TTSModel Information

Model Darwin TTS
Developer FINAL-Bench
Quality
Speed Medium
License Apache 2.0
Cloning Supported
Tier Standard (2x characters)
Parameters 2.1B
Architecture Qwen3-TTS + FFN blend
Year 2026

Best Use Cases for Default

Recommended applications based on this voice's characteristics

Audiobooks & Narration

Use Default to narrate long-form content with natural prosody and expression.

Video Voiceovers

Add professional narration to YouTube videos, ads, and social media content.

Custom Brand Voice

Clone this voice style with your own audio to create a unique branded TTS voice.

E-Learning & Training

Create engaging training materials, courses, and educational content with clear AI narration.

More Darwin TTS Voices

Other voices from the same TTS model

Default (Chinese)

Chinese Neutral

Default (Japanese)

Japanese Neutral

Default (Korean)

Korean Neutral
View all Darwin TTS Voices

Frequently Asked Questions

Darwin-TTS-1.7B-Cross by FINAL-Bench is a research variant of Qwen3-TTS-1.7B where 84 talker-FFN tensors (8.6%) are blended at α=3% with the matching tensors from Qwen3-1.7B-Base. The blend is built without retraining and produces noticeably crisper cross-lingual voice cloning across Korean, English, Japanese, and Chinese. Operates in zero-shot voice-clone mode (3 seconds reference audio).

Darwin TTS was developed by FINAL-Bench and is released under the Apache 2.0 license, which permits commercial use of generated audio.

Darwin TTS supports 10 languages: English, Korean, Japanese, Chinese, German, French, Russian, Portuguese and more.

Darwin TTS is in the Standard tier — 2 credits per 1,000 characters. You can preview any Darwin TTS voice for free before generating full audio.

Darwin TTS has moderate generation speed. Generation typically takes a few seconds depending on text length.

Darwin TTS is rated 4/5 for audio quality on TTS.ai. It produces high-quality, natural-sounding speech.

Yes, Darwin TTS supports zero-shot voice cloning. Upload 5-30 seconds of reference audio to create a custom voice.

Yes, Darwin TTS is specifically recommended for cross-lingual voice cloning, multilingual narration with a single reference voice. Its voice cloning, cross-lingual, ffn-blended capabilities make it an excellent choice for this use case.

Yes, Darwin TTS is licensed under Apache 2.0, which allows commercial use. Audio generated with Darwin TTS voices can be used in videos, podcasts, apps, games, and any other commercial project.

Yes, all voices on TTS.ai use commercially-licensed open-source models (MIT, Apache 2.0). The generated audio is yours to use in videos, podcasts, apps, games, and any other commercial application.

Send a POST request to /api/v1/tts/ with the model name and voice ID. See our API Documentation page for code examples in Python, JavaScript, Go, and cURL.

Yes, click the play button on this page to hear a sample. You can also type custom text on the Text to Speech page and generate a free preview with any voice.

Try Default Now

Type any text and hear it spoken by Default. Free to use.

Generate Speech Sign Up Free