Granite Switch 4.1.1 — Update models like you update software

IBM's Granite team has released Granite Switch 4.1.1, a patch to the modular language model it launched just over a week earlier, according to a Hugging Face post dated October 29, 2026. The post, whose authors include Kate Soule, Luis A Lastras, Subhajit Chaudhury and Abraham Daniels, says the version number carries the same meaning it does in software: full backwards compatibility with 4.1, no migration and incremental internal improvements.

The update has two parts. A revised Granite Speech model provides multilingual speech-to-text in 10 languages, with built-in punctuation and capitalization that the team says makes transcripts usable by downstream models without a separate formatting step. An updated Decision adapter in granitelib-core is described as performing better overall on the Jev Decision Index test set, though the post gives no specific scores.

IBM's main argument concerns how the release was produced. Switch lets a single endpoint carry specialized, cache-efficient adapters, and the team says only the new speech model and Decision adapter had to be trained, leaving the base model untouched. Users simply combine the adapters they want and deploy.

The team presents this as a route to updating models on a software-style cadence rather than through full retraining. It says tutorials and an Adapter SDK are in development so outside developers and third-party providers can build, version and ship their own adapters, but it offers no release date. A Speech-to-Decisions demo on Hugging Face showcases the new multilingual and punctuation features.