Granite Speech 5.0
IBM's Apache 2.0 speech models: a 2B ASR/translation model at 5.06% English WER and a 470M Turbo CTC model at 19,870 RTFx.
Overview
IBM published Granite Speech 5.0 on October 21, 2026: Granite Speech 5.0 2B, Granite Speech 5.0 Turbo CTC (about 470M parameters), and an updated Granite Speech 4.1 2B Plus, all under Apache 2.0. The 5.0 2B model transcribes English, French, German, Spanish, Portuguese, and Japanese, translates to and from English in those languages plus English to Italian and Mandarin, and averages 5.06% WER on the Open ASR Leaderboard's English short-form sets, ranking #2 among top open-weight ASR models by IBM's account. Turbo CTC reaches 19,870 RTFx, about 1.6x faster than at launch at the same accuracy.
This is a sourced directory entry. Features and capabilities are reported in the linked sources; this entry does not document independent Aymorphic testing.
Key features
- 5.0 2B: 5.06% average English short-form WER on the Open ASR Leaderboard; keyword lists up to 2,000 terms; language-ID prompting
- Translation to and from English across six languages, plus English to Italian and Mandarin
- Turbo CTC (~470M): 19,870 RTFx, native punctuation and capitalization, seven languages
- 4.1 2B Plus: long-form WER 13.53 to 10.22 and biased-keyword WER 11.79 to 6.48; drop-in replacement for 4.1 2B
- Native Transformers support; the 5.0 2B also runs on vLLM, llama.cpp, and mlx-audio on Apple Silicon
Use cases
- Self-hosted transcription and speaker-attributed meeting notes
- Multilingual call-center transcription and translation
- High-throughput batch ASR using the CTC model
Pricing
Free open weights under Apache 2.0.
Pricing reflects the source record and may change. Confirm current terms with the provider.
Dates and sources
- Released
- 21 Oct 2026
- Record updated
- 23 Oct 2026
- Record last checked
- 23 Oct 2026