This is a 20 billion parameter open-source large language model provided by Unsloth in BF16 format. It includes a custom chat template supporting tool use and reasoning control. The model is designed for local inference and can be used with popular LLM frameworks. It is hosted on Hugging Face for easy download and integration.
In the Quantised & converted weights space, Gpt Oss 20b takes a focused approach. It focuses on providing a high-capacity open LLM that can be run locally or fine-tuned for custom applications. Gpt Oss 20b is an open-source project aimed at developers. Gpt Oss 20b is open source under the Apache-2.0 license. It ships for the web, the command line, and API.
Unsloth builds and maintains Gpt Oss 20b, and it first shipped in 2025. The project is developed in the open on GitHub with 4.5k stars. Among its 4 catalogued features are Large Language Model, BF16 Precision, and Chat Template.
Summary written by a language model from the project’s public pages.
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