granite speech 4.1 2b plus: transcribe.cpp GGUF GGUF conversions of ibm granite/granite speech 4.1 2b plus for use with transcribe.cpp. Ported from upstream commit edd3bf5, pinned 2026 05 17. Validated against the Transformers reference at transcribe.cpp commit 275332d on 2026 05 17. Offline multilingual speech to text with word level timestamps. IBM Granite Speech 4.1 2b plus is the timestamp and diarization variant of the Granite Speech family. Same architecture as the base 4.1 2b (Conformer encoder, BLIP 2 Q Former projector, Granite 4.0 1b autoregressive LLM decoder) with two changes: the encoder concatenates mid layer (idx 3) and final layer hidden states ( cat hidden layers=[3] , doubling the projector K/V input from 1024 to 2048), and the LM token embeddings are tied with the lm head. Takes a 16 kHz mono WAV and produces a transcript, with timestamps word returning structured per word timestamps (parsed from the model's [T:N] centisecond markers). Transcribes English, French, German, Spanish, and Portuguese (no Japanese on this variant). This variant is transcription only: unlike the base granite speech 4.1 2b, it does not perform speech translation. Downloads Quantization D…
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