Granite-4.1-3B is a compact open-source language model developed by IBM. It features strong performance on tool use, function calling, and agentic workflows. The model includes a specialized chat template for structured tool interactions and can be run locally via Hugging Face Transformers or optimized inference engines. It is part of the Granite family of models focused on enterprise and developer use cases.
Granite 4.1 3b is a Foundation models & chat product. It focuses on running efficient, tool-enabled language models locally or on-premise without relying on proprietary cloud APIs. It is built as an open-source project for developers. Granite 4.1 3b is open source under the Apache-2.0 license. It runs on the web, the command line, and API.
IBM builds and maintains Granite 4.1 3b, and the product first shipped in 2025. Development happens publicly on GitHub with 90 stars and 11 commits in the last 90 days. Key capabilities include Tool Calling, Function Calling, and Chat Template.
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