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BricksDisplay/
NeuTTS-Air-GGUF

Name: NeuTTS-Air-GGUF
Availability: InStock

neuphonic/neutts-nano

quantized

other

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NeuTTS Nano GGUF

GGUF conversions of Neuphonic's NeuTTS Nano — a compact (~228 M params, ~117 M active) on-device TTS LM with instant voice cloning.

The stack is split so each runtime owns the part it's good at:

LLM-part — text-and-reference-codes to speech token IDs, stock llama arch, runs in llama.cpp.
Codec-part — speech token IDs to/from 24 kHz PCM via NeuCodec, runs in codec.cpp.

Files

LLM-part (llama arch, vocab 194256, RoPE θ=500000 + linear scaling x32)

neutts-nano-<quant>.gguf

File	Size
`neutts-nano-f32.gguf`	925 MB
`neutts-nano-f16.gguf`	467 MB
`neutts-nano-bf16.gguf`	467 MB
`neutts-nano-q8_0.gguf`	253 MB
`neutts-nano-q6_k.gguf`	245 MB
`neutts-nano-q5_k_m.gguf`	217 MB
`neutts-nano-q5_k_s.gguf`	214 MB
`neutts-nano-q5_1.gguf`	216 MB
`neutts-nano-q5_0.gguf`	209 MB
`neutts-nano-q4_k_m.gguf`	210 MB
`neutts-nano-q4_k_s.gguf`	205 MB
`neutts-nano-q4_1.gguf`	202 MB
`neutts-nano-q4_0.gguf`	194 MB
`neutts-nano-q3_k_l.gguf`	200 MB
`neutts-nano-q3_k_m.gguf`	196 MB
`neutts-nano-q3_k_s.gguf`	190 MB
`neutts-nano-q2_k.gguf`	190 MB

Codec-part (NeuCodec, `neucodec` arch, 65536 codebook, 24 kHz, 80 Hz token rate)

codec[-<quant>].gguf

File	Size
`codec-f32.gguf`	928 MB
`codec-f16.gguf`	465 MB
`codec-q8_0.gguf`	326 MB
`codec-q5_k_m.gguf`	270 MB
`codec-q4_k_m.gguf`	252 MB

Prompt format

The reference flow (from neuphonic/neutts):

user: Convert the text to speech:<|TEXT_PROMPT_START|>{ref_phones} {input_phones}<|TEXT_PROMPT_END|>
assistant:<|SPEECH_GENERATION_START|>{ref_codes_as_speech_tokens}

{ref_phones} / {input_phones} — IPA-phonemized text (espeak-ng / phonemizer).
{ref_codes_as_speech_tokens} — concatenation of <|speech_N|> strings for each NeuCodec token of a reference clip.
Generation continues with more <|speech_N|> tokens until <|SPEECH_GENERATION_END|>.

Notes

Reference encoding (audio → speech tokens) needs the codec encode path.
Phonemization isn't part of the GGUF — apply espeak-ng (or equivalent) on the host before tokenizing prompts; raw English text will be off-distribution.
Source weights: neuphonic/neutts-nano (LLM) and neuphonic/neucodec (codec).

BricksDisplay/NeuTTS-Air-GGUF