Audio modelOpen weights
Granite Speech 5.0 470M TurboCTC
IBM
- Released
- August 25, 2026
- Data date
- October 3, 2026
- Model class
- Access
Granite Speech 5.0 470M TurboCTC is a 470-million-parameter model for English speech recognition. Its Conformer architecture uses non-autoregressive CTC decoding and targets edge devices, laptops, and mobile hardware.
The checkpoint is available locally under Apache-2.0. Its role is audio to text, not audio understanding with a spoken response.
Specifications and access
| Specification | Value and source |
|---|---|
| Model class | Speech recognitionSource |
| Access | Local weightsSource |
| Input | English audioSource |
| Output | TranscriptSource |
| Checkpoint | ibm-granite/granite-speech-5.0-470m-turboctcSource |
| License | Apache-2.0Source |
| Architecture | Conformer with non-autoregressive CTC decodingSource |
| Deployment | Designed for edge devices, laptops, and mobile devicesSource |
Measurements without matching peer values
These measurements have no matching peer values under the same test conditions. Their original values and sources remain available here.
WER (Show measurement, test conditions, and source)
- Source value
- 5
- Score
- 5
- Metric
- word error rate
- Unit
- %
- Benchmark version
- source version not stated
- Category
- audio
- Direction
- Lower is better
- Source type
- vendor-reported
- Evaluator
- IBM Granite Speech announcement
- Status
- active
- Retrieved at
- 2026-10-04
- Methodology
- Vendor-reported result. Apache checkpoint; IBM OpenASR table
- Context
- Source-specific observation; it does not establish a compatible cross-model cohort.
Sources and data date
Every statement links to its underlying documentation or leaderboard.
| Type | Evidence and data date |
|---|---|
| Research status | Research date October 4, 2026. 1 source URLs checked. This documents the inspected sources, not an exhaustive inventory of every publication. |
| Additional source | IBM Granite Speech 5.0 model card (retrieved October 3, 2026) · IBM Granite Speech 5.0 model card · Editorial description reviewed October 3, 2026 |
| Additional source | IBM Granite announcement (retrieved October 3, 2026) · IBM Granite announcement · Editorial description reviewed October 3, 2026 |
| Additional source | IBM Granite Speech announcement (retrieved October 4, 2026) |