# OpenAI launches 2 Open Source AI Models ### What Are These Models? - **Open-weight reasoning models** built for flexibility and customization. - Available via **Hugging Face** and **GitHub**, with live demos accessible in-browser. ### Model Types - **gpt-oss-120b**: Large-scale model for data centers or high-performance systems. - **gpt-oss-20b**: Medium-scale model for standard desktops and laptops. ### Features and Capabilities - **Permissive licensing (Apache 2.0)**: Freedom to deploy and modify without legal headaches. - Designed for **agentic tasks**, like web searching and Python execution. - **Chain-of-thought reasoning**: Improves transparency and debugging. - **Customizable effort levels**: Choose from low, medium, or high reasoning complexity. - **Full-parameter fine-tuning** supported. ### Performance Snapshot | Model | MMLU | GPQA | AIME 2024 | AIME 2025 | |-------------------|------|------|-----------|-----------| | gpt-oss-120b | 90.0 | 80.1 | 96.6 | 97.9 | | gpt-oss-20b | 85.3 | 71.5 | 96.0 | 98.7 | | OpenAI o3 | 93.4 | 83.3 | 95.2 | 98.4 | | OpenAI o4-mini | 93.0 | 81.4 | 98.7 | 99.5 | ### Safety Measures - Comprehensive safety training and testing. - Malicious tuning of gpt-oss-120b reviewed under OpenAI’s **Preparedness Framework**. - Collaboration with external safety experts ensures high standards. Source: [OpenAI](https://openai.com/open-models)

OpenAI launches 2 Open Source AI Models.

Source: OpenAI