Audio modelOpen weights
Granite Speech 5.0 470M TurboCTC NC
IBM
- Released
- August 25, 2026
- Data date
- October 3, 2026
- Model class
- Access
Granite Speech 5.0 470M TurboCTC NC uses the same 470-million-parameter class and CTC-oriented Conformer architecture as the commercially usable Granite checkpoint. It targets English audio-to-text recognition on modest hardware.
NC denotes the noncommercial license scope. The CC-BY-NC-SA-4.0 release permits research and noncommercial use, not unrestricted commercial reuse.
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-turboctc-ncSource |
| License | CC-BY-NC-SA-4.0Source |
| Architecture | Conformer with non-autoregressive CTC decodingSource |
| License scope | Research and noncommercial use onlySource |
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
- 4.85
- Score
- 4.85
- 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. NC checkpoint; extra GigaSpeech/SPGI data; CC-BY-NC-SA-4.0
- 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 noncommercial model card (retrieved October 3, 2026) · IBM Granite Speech 5.0 noncommercial 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) |