granite-4.0-speech

About

What granite-4.0-speech is

Granite-4.0-1b-speech Model Summary: Granite-4.0-1b-speech is a compact and efficient speech-language model, specifically designed for multilingual automatic speech recognition (ASR) and bidirectional automatic speech translation (AST). The model was trained on a collection of public corpora comprising of diverse datasets for ASR and AST as well as synthetic datasets tailored to support Japanese ASR, keyword-biased ASR and speech translation. Granite-4.0-1b-speech was trained by modality aligning granite-4.0-1b-base to speech on publicly available open source corpora containing audio inputs and text targets. Compared to granite-speech-3.3-2b and granite-speech-3.3-8b, this model has the following additional capabilities and improvements: Supports multilingual speech inputs in English, French, German, Spanish, Portuguese and Japanese, Provides higher transcription accuracy for English ASR and faster inference through better encoder training and speculative decoding, Has half the number of parameters of granite-speech-3.3-2b for running on resource-constrained devices, Adds keyword list biasing capability for enhanced name and acronym recognition Evaluations: We evaluated granite-4.0-1b-speech alongside other speech-language models in the less than 8b parameter range as well as dedicated ASR and AST systems on standard benchmarks. The evaluation spanned multiple public benchmarks, with particular emphasis on English ASR tasks while also including multilingual ASR and AST for X-En and En-X translations. Performance on HuggingFace Open ASR leaderboard: Release Date: March 6, 2026 License: Apache 2.0 Supported Languages: English, French, German, Spanish, Portuguese, Japanese Intended Use: The model is intended to be used in enterprise applications that involve processing of speech inputs. In particular, the model is well-suited for English, French, German, Spanish, Portuguese and Japanese speech-to-text and speech translations to and from English for the same languages, plus English-to-Italian and English-to-Mandarin. Generation: Granite Speech model is supported natively in transformers=4.52.1. Below is a simple example of how to use the granite-4.0-1b-speech model.

Summarised from the published model card. Read the full card on the HuggingFace links below.

Specifications

What it is

How it works

How audio & music work

Variants

Sizes & precisions

Open weights ship in several sizes and precisions. One page, all the variants — pick the one that fits your GPU. VRAM figures are estimates from model size.

Using it via the API

Call it like any OpenAI endpoint

Once AxForge deploys granite-4-0-speech for you, it answers on the OpenAI-compatible API — the same base URL and keys as every other model. (granite-4-0-speech below is illustrative; you get the exact model name on deployment.)

$ curl -sS https://api.axforge.ai/v1/audio/transcriptions \
  -H "Authorization: Bearer $AXFORGE_API_KEY" \
  -F model="granite-4-0-speech" -F file=@audio.mp3

Details

Languages, data & research

Papers

Licence

Open weights

Sources

Weights & code

Explore

More audio & music