Justbackup/gpt-oss-20b
Justbackup/gpt-oss-20b is a 21 billion parameter open-weight model from OpenAI, designed for powerful reasoning and agentic tasks. It features configurable reasoning effort, full chain-of-thought access, and agentic capabilities including function calling, web browsing, and Python code execution. This model is optimized for lower latency and specialized use cases, running efficiently within 16GB of memory.
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Overview
Justbackup/gpt-oss-20b is a 21 billion parameter model from OpenAI's gpt-oss series, designed for robust reasoning and agentic applications. It is released under a permissive Apache 2.0 license, allowing for broad experimentation, customization, and commercial deployment. This model is specifically tailored for lower latency and specialized use cases, capable of running efficiently within 16GB of memory thanks to MXFP4 quantization.
Key Capabilities
- Configurable Reasoning Effort: Users can adjust the reasoning level (low, medium, high) to balance response speed and analytical depth.
- Full Chain-of-Thought: Provides complete access to the model's internal reasoning process, aiding debugging and increasing trust in outputs.
- Agentic Features: Includes native support for function calling, web browsing, and Python code execution.
- Fine-tunable: The model can be fine-tuned on consumer hardware to adapt to specific use cases.
- Harmony Response Format: Requires use with the harmony response format for correct operation.
Good For
- Applications requiring powerful reasoning and agentic capabilities with lower latency.
- Specialized tasks where fine-tuning on custom data is beneficial.
- Deployment on systems with memory constraints, such as consumer hardware (e.g., via Ollama or LM Studio).