Text-to-speech
NeuTTS Air requirements, license & speed
By Neuphonic · released 2025-09-15 · ~552M (emb + active), ~360M active parameters
Commercial useYes
Min memoryNot stated
Runs on CPUYes
StreamingYes
Key facts
- License
- apache-2.0 source
- Commercial use
- Yes sourceAir is Apache-2.0; newer Nano variants use NeuTTS Open License 1.0. HF repo gated
- Parameters
- ~552M (emb + active), ~360M active source
- Minimum memory
- Not stated by source
- Runs on CPU
- Yes sourceCPU benchmarks published (Ryzen 9HX 370, M4, Galaxy A25)
- Streaming
- Yes sourceStreaming via GGUF backbones + llama-cpp-python
- Voice cloning
- Yes sourceFrom ~3 s of audio
- Languages
- en source
- Released
- 2025-09-15 sourceHugging Face repo creation date (proxy for release date)
- Gated on HF
- Yes accept terms on Hugging Face before downloading
Measured speed & memory
Benchmark pending. We haven't measured NeuTTS Air yet. Planned targets: Raspberry Pi 5, CPU-only x86, Apple Silicon Mac and consumer GPUs. Get notified.
Accuracy
We don't run accuracy evals. For quality and intelligibility, check the Hugging Face Open TTS Leaderboard.
Similar TTS models
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