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LLM 29 October 2026

Granite Switch 4.1.1: Modular Adapters for Rapid LLM Customization

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Hugging Face Blog · 1 week ago

IBM released Granite Switch 4.1.1, a patch update that showcases the power of their modular Switch architecture. This design allows users to add specialized expertise, known as adapters, to a language model without the need to retrain the entire base model.

Key improvements include an updated Granite Speech ASR model, which now handles multilingual speech-to-text across 10 languages, automatically adding native punctuation and capitalization. The Decision adapter was also updated, showing improved performance on specific test sets.

The most significant takeaway is the efficiency of the update process. The ability to update specific adapters without touching the base model drastically speeds up deployment and customization. This pattern is intended to be scalable, leading IBM to develop an Adapter SDK so third parties can easily build and deploy their own specialized modules, much like updating software.

Why it matters

  • —It redefines model deployment by enabling modular, non-disruptive updates.
  • —It significantly improves the speed and efficiency of customizing large language models.
  • —The planned Adapter SDK will democratize specialized AI development for third-party developers.

Key facts

  • Granite Switch 4.1.1 is a patch release, fully backward compatible with 4.1.
  • The updated ASR model supports 10 languages with native punctuation and capitalization.
  • The architecture allows adding expertise via adapters without retraining the base model.
  • IBM plans to release an Adapter SDK for third-party developers to build custom modules.
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