Kokoro preset voice · American English
Kokoro af_bella: Bella
Bella is the strongest American English voice in Kokoro's own grading, with a warm, even delivery that holds up across long paragraphs. It is the safe default when a script needs to sound finished on the first pass.
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Voice facts
- Voice ID
af_bella- Accent
- American English
- Gender
- Female
- Official grade
- A-
- Tone
- Warm, professional narrator
- Target quality / training data
- A / HH hours
Where Bella fits
Good for
- Audiobook and long-form narration
- Course and explainer voiceovers
- Product walkthroughs
Pick another voice for
- Fast, punchy ad reads
- Character dialogue that needs a big range
Grades and training data come from the model author’s Kokoro-82M VOICES.md, checked November 5, 2026. The sample above was generated with this preset; your result depends on the script and speed setting.
Use the same voice ID in code
The preset name is the same in the open source Kokoro tools. With MLX-Audio on Apple Silicon:
mlx_audio.tts.generate --model mlx-community/Kokoro-82M-bf16 \
--text "Hello from Kokoro." --voice af_bella --lang_code aWith the kokoro Python package:
from kokoro import KPipeline
pipeline = KPipeline(lang_code="a")
for _, _, audio in pipeline("Hello from Kokoro.", voice="af_bella"):
...The first letter of the ID sets the accent (a American, b British) and the second sets the speaker (f female, m male). The language code must match.
Other Kokoro voice profiles
- EricDeep, measured narrator
- NovaBright, friendly conversational voice
- MichaelClear, confident business voice
- SkyHigh, energetic character voice
- OnyxDeep, authoritative voice
- LilySoft, gentle young voice
- GeorgeCalm, measured voice
- DanielFormal, dignified voice
- EmmaPolite, earnest young voice
Want something beyond the presets? Browse community voices or try Voice Design.