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The model consists of a conformer acoustic encoder with block self-attention, self-conditioning and temporal downsampling with an output layer corresponding to 16,384 BPE units. It was trained on approximately 60,000 hours of English audio from public corpora using Connectionist Temporal Classification (CTC) and inference is done non-autoregressively with greedy decoding. **Evaluations:** We evaluated granite-speech-5.0-470m-turboctc on standard short-form English ASR benchmarks from the [Open ASR leaderboard](https://huggingface.co/spaces/hf-audio/open_asr_leaderboard): ![granite-speech-5.0-470m-turboctc](https://cdn-uploads.huggingface.co/production/uploads/666ec38102791b3b49f453e8/k7snNSyUaGf_E7PvKLYL6.png) Performance on the [Open ASR leaderboard](https://huggingface.co/spaces/hf-audio/open_asr_leaderboard) (official results as of August 25, 2026, public test sets only, RTFx measured on 1 H200):..."},"evidence_pages":[],"related_signals":[{"id":"51e193f8-7947-4d1d-b812-427700835845","url":"https://onlylabs.fyi/signals/51e193f8-7947-4d1d-b812-427700835845","source_url":"https://huggingface.co/ibm-granite/granite-4.2-30b-bf16-mlx","title":"ibm-granite/granite-4.2-30b-bf16-mlx","context":null,"kind":{"key":"model_released","label":"Model"},"org":{"slug":"ibm","name":"IBM (Granite)","category":"neolab"},"occurred_at":"2026-09-01T20:59:34+00:00","first_seen_at":"2026-09-04T07:21:02.272632+00:00","date_source":"source"},{"id":"fc7aed16-65a6-4254-9912-5b5a799d1281","url":"https://onlylabs.fyi/signals/fc7aed16-65a6-4254-9912-5b5a799d1281","source_url":"https://huggingface.co/ibm-granite/granite-4.2-8b-bf16-mlx","title":"ibm-granite/granite-4.2-8b-bf16-mlx","context":null,"kind":{"key":"model_released","label":"Model"},"org":{"slug":"ibm","name":"IBM (Granite)","category":"neolab"},"occurred_at":"2026-09-01T20:42:50+00:00","first_seen_at":"2026-09-04T07:21:02.272632+00:00","date_source":"source"},{"id":"f53d8d39-9e04-43b8-9839-8361bbc101bd","url":"https://onlylabs.fyi/signals/f53d8d39-9e04-43b8-9839-8361bbc101bd","source_url":"https://huggingface.co/ibm-granite/granite-4.2-3b-bf16-mlx","title":"ibm-granite/granite-4.2-3b-bf16-mlx","context":null,"kind":{"key":"model_released","label":"Model"},"org":{"slug":"ibm","name":"IBM (Granite)","category":"neolab"},"occurred_at":"2026-09-01T20:41:36+00:00","first_seen_at":"2026-09-04T07:21:02.272632+00:00","date_source":"source"},{"id":"9f5b75dc-d66b-4582-acda-7297801c0855","url":"https://onlylabs.fyi/signals/9f5b75dc-d66b-4582-acda-7297801c0855","source_url":"https://huggingface.co/ibm-granite/granite-speech-5.0-470m-turboctc-nc","title":"ibm-granite/granite-speech-5.0-470m-turboctc-nc","context":null,"kind":{"key":"model_released","label":"Model"},"org":{"slug":"ibm","name":"IBM (Granite)","category":"neolab"},"occurred_at":"2026-08-17T17:29:48+00:00","first_seen_at":"2026-08-26T07:20:09.128921+00:00","date_source":"source"},{"id":"396b283c-f6b5-4ed4-ab84-f44071f13a69","url":"https://onlylabs.fyi/signals/396b283c-f6b5-4ed4-ab84-f44071f13a69","source_url":"https://huggingface.co/ibm-granite/granite-4.2-8b-nvfp4","title":"ibm-granite/granite-4.2-8b-nvfp4","context":null,"kind":{"key":"model_released","label":"Model"},"org":{"slug":"ibm","name":"IBM (Granite)","category":"neolab"},"occurred_at":"2026-08-13T21:05:48+00:00","first_seen_at":"2026-08-26T07:20:09.128921+00:00","date_source":"source"},{"id":"168c47d0-ffae-428d-958d-00890b1cd1dd","url":"https://onlylabs.fyi/signals/168c47d0-ffae-428d-958d-00890b1cd1dd","source_url":"https://huggingface.co/ibm-granite/granite-4.2-8b-mxfp4","title":"ibm-granite/granite-4.2-8b-mxfp4","context":null,"kind":{"key":"model_released","label":"Model"},"org":{"slug":"ibm","name":"IBM (Granite)","category":"neolab"},"occurred_at":"2026-08-13T21:05:29+00:00","first_seen_at":"2026-08-26T07:20:09.128921+00:00","date_source":"source"}]}