This is a 12B parameter language model based on Gemma, fine-tuned for agentic behavior and compositional tasks (fable5-composer). It includes a custom chat template with JSON schema tool calling support. The model is hosted on Hugging Face and can be used with standard Transformers pipelines or inference providers.
In the Foundation models & chat space, Gemma 4 12B Agentic Fable5 Composer2.5 V2 3.5x Tau2 takes a focused approach. It focuses on running specialized agentic and compositional language model inference without training from scratch. Gemma 4 12B Agentic Fable5 Composer2.5 V2 3.5x Tau2 is an open-source project aimed at developers. Gemma 4 12B Agentic Fable5 Composer2.5 V2 3.5x Tau2 is open source under the Open Source license. It ships for the web, the command line, and API.
It is developed by yuxinlu1, and it first shipped in 2025. Among its 3 catalogued features are Chat Template, JSON Schema Tools, and Agentic Capabilities.
Summary written by a language model from the project’s public pages.
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