The openai/gpt-oss-20b is a 21 billion parameter open-weight model developed by OpenAI, designed for powerful reasoning, agentic tasks, and versatile developer use cases. It features configurable reasoning effort (low, medium, high) and provides full chain-of-thought access for debugging. Optimized for lower latency and specialized applications, this model supports agentic capabilities like function calling, web browsing, and Python code execution. It is fine-tunable and can run within 16GB of memory due to MXFP4 quantization.
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