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Open weightsTsinghua University / ByteDance/10 trustVerified

SALMONN

An LLM with ears — speech, audio events, and music understanding in one model

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About

SALMONN (Speech Audio Language Music Open Neural Network) is a collaboration between Tsinghua's Department of Electronic Engineering and ByteDance that gives a large language model generic hearing. It fuses a Whisper speech encoder and a BEATs general-audio encoder through a window-level Q-Former, then aligns the result into a Vicuna 7B or 13B backbone with a LoRA adaptor. One model can transcribe and translate multilingual speech, caption audio events, describe music, do audio-speech co-reasoning, and hold open-ended dialogue about what it hears, trained on 600k+ QA samples. The code and weights are Apache 2.0, which is unusually permissive for this class of model. It is an understanding model, not a generator — it will not synthesize audio — and the 13B variant wants around 26 GB of VRAM.

Specs

Context window

Standard Vicuna context; audio enters as encoded tokens

Pricing

Free — open weights (Apache 2.0)

Free quota

N/A — self-hosted

API access

Hugging Face checkpoints and Gradio demo; no hosted API

Weights

Open weights

Released

Not disclosed

Benchmarks

Team-reported: strong results across 8 instruction tasks plus emergent cross-modal tasks unseen in training (paper arXiv 2310.13289, ICLR 2024)

Provider-reported unless a source says otherwise. Benchmarks are marketing-adjacent by nature — treat them as directional.

Use cases

Audio content analysisMusic understanding and descriptionVoice-based Q&A researchAccessibility audio captioning

Trust score — 8/10

/10 trustVerified

Scored 8/10 (verified tier, metrics-v1). Evidence: Paper arXiv 2310.13289 and Tsinghua/ByteDance authorship verified; ICLR 2024; Apache-2.0 license and architecture details (Whisper+BEATs, Q-Former, Vicuna) consistent across sources; Exact release day not verified — releasedAt null.

Sources