| # Voices | |
| For each voice, the given grades are intended to be estimates of the **quality and quantity** of its associated training data, both of which impact overall inference quality. | |
| Voices may also subjectively sound better or worse to different people. | |
| **Target Quality** | |
| - How high quality is the reference voice? This grade may be impacted by audio quality, artifacts, compression, & sample rate. | |
| - How well do the text labels match the audio? Text/audio misalignment (e.g. from hallucinations) will lower this grade. | |
| **Training Duration** | |
| - How much audio was seen during training? Smaller durations result in a lower overall grade. | |
| ### American 🇺🇸 | |
| | Name | Traits | Target Quality | Training Duration | Overall Grade | | |
| | ---- | ------ | -------------- | ----------------- | ------------- | | |
| | af_alloy | 🚺 | B | MM minutes | C | | |
| | af_aoede | 🚺 | A | H hours | B+ | | |
| | af_bella | 🚺🔥 | A | HH hours | A- | | |
| | af_jessica | 🚺 | C | MM minutes | D | | |
| | af_kore | 🚺 | B | H hours | C+ | | |
| | af_nicole | 🚺🎧 | B | HH hours | B- | | |
| | af_nova | 🚺 | B | MM minutes | C | | |
| | af_river | 🚺 | C | MM minutes | D | | |
| | af_sarah | 🚺 | B | H hours | C+ | | |
| | af_sky | 🚺 | B | M minutes | C- | | |
| | am_adam | 🚹 | D | H hours | F+ | | |
| | am_echo | 🚹 | C | MM minutes | D | | |
| | am_eric | 🚹 | C | MM minutes | D | | |
| | am_fenrir | 🚹 | B | H hours | C+ | | |
| | am_liam | 🚹 | C | MM minutes | D | | |
| | am_michael | 🚹 | B | H hours | C+ | | |
| | am_onyx | 🚹 | C | MM minutes | D | | |
| | am_puck | 🚹 | B | H hours | C+ | | |
| ### British 🇬🇧 | |
| | Name | Traits | Target Quality | Training Duration | Overall Grade | | |
| | ---- | ------ | -------------- | ----------------- | ------------- | | |
| | bf_alice | 🚺 | C | MM minutes | D | | |
| | bf_emma | 🚺 | B | HH hours | B- | | |
| | bf_isabella | 🚺 | B | MM minutes | C | | |
| | bf_lily | 🚺 | C | MM minutes | D | | |
| | bm_daniel | 🚹 | C | MM minutes | D | | |
| | bm_fable | 🚹 | B | MM minutes | C | | |
| | bm_george | 🚹 | B | MM minutes | C | | |
| | bm_lewis | 🚹 | C | H hours | D+ | | |