Granite Speech 5.0 TurboCTC

SyncDev model directory · Profile updated Oct 8, 2026

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Granite Speech 5.0 TurboCTC is a compact English speech-recognition checkpoint using non-autoregressive CTC decoding.

Key specifications

Specification score
5.0
License
Apache 2.0
Parameters
472.99M

The specification score summarizes recorded features and limits. It is not a benchmark result.

Inputs and outputs

Recorded modality support shows what this model can accept and produce. An undocumented modality is shown as unknown rather than assumed to be unsupported.

Accepts

  • Audio input

Produces

  • Text output

Capabilities

AudioStreamingOpen weights

What is Granite Speech 5.0 TurboCTC?

Granite Speech 5.0 TurboCTC is a compact English speech-recognition checkpoint using non-autoregressive CTC decoding.

English speech-to-text

TurboCTC is a roughly 470M-parameter acoustic model for English transcription. It uses a conformer encoder, Connectionist Temporal Classification and greedy non-autoregressive decoding. The publisher positions it for low-latency or high-throughput speech processing, including local and edge devices.

Match the audio processor

Use the model’s processor and the sample rate it expects. Batch padding, channel conversion and chunk boundaries can affect recognition, so make these settings consistent across an evaluation. The native Transformers path documented by the publisher requires a version that supports this Granite architecture.

Compare usable transcripts

Test a quiet recording, background noise, reverberation and names from the application’s domain. Compare against a reference transcript and inspect substitutions that change meaning. Measure total processing time on the actual device; a GPU benchmark from the model card is not a laptop latency guarantee.

Licence and scope

The model uses Apache 2.0 licensing and returns transcription text rather than dialogue or synthesized audio. Speaker labeling is a separate capability and should not be inferred from ASR support. The checkpoint does not define a managed hourly or token rate. Budget device memory, concurrency and any downstream punctuation or diarization work separately from the recognition model.

Sources

Model documentation

How to evaluate Granite Speech 5.0 TurboCTC

Compare the model on the work you need to complete.

Tasks and inputs

Granite Speech 5.0 TurboCTC is listed for Automatic speech recognition. It accepts audio and produces text. Use the publisher’s input format and preprocessing for your chosen deployment.

Capacity and cost

Measure a completed task using the prompts, documents and tools your application will use. Include reasoning and retries in the result.

Choosing a deployment

The weights are downloadable under Apache 2.0. Check runtime support and size the complete model and working context for your expected concurrency.

Frequently asked questions

Yes. The linked publisher repository supplies the weights or reference inference files and explains the supported runtime.

These records share a directory category. Check the source card, output type and deployment requirements before treating a model as a replacement.

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