Granite Speech 5.0 470M Turbo CTC

Name: Granite Speech 5.0 470M Turbo CTC
Author: Ibm

Ibm🇺🇸 United States

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5.0-470m-turboctcmajorAugust 25, 2026

IBM released two new 470M-parameter encoder-only Granite Speech models—one Apache 2.0, one non-commercial—replacing the prior LM-based architecture with a CTC-based design that is over 20x faster while achieving under 5% WER on public benchmarks.

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IBM Releases Granite Speech 5.0 Turbo CTC: 470M-Parameter ASR Model Hits 12,600x Real-Time Speed

IBM has released two new 470M-parameter Granite Speech models that transcribe audio at over 12,600x real-time speed on an NVIDIA H200 GPU. The encoder-only models achieve 4.85-5.00% word error rate while running over 20x faster than prior Granite Speech versions.

August 25, 2026 · 3:05 PM3 min read

IBM Granite Speech speech recognition