OpenAI Open Model Hackathon

Apply gpt-oss models in creative ways during this 6-week challenge

gpt-oss-120b and gpt-oss-20b are here. Developed with feedback from the open-source community, these models push the frontier of open models at their size.
Hugging Face, NVIDIA, Ollama, vLLM and OpenAI have come together to host this six-week hackathon. Your challenge is to apply these models in creative, unexpected ways: build a robot with reasoning, craft a local agent that thrives offline, fine-tune a model into something indispensable or push the edge with the weirdest hardware you can imagine. Whether your project benefits humanity or surprises everyone with its creativity, this is your moment to redefine what open models can do.

📅 Event Details

🗓 Dates: August 05 – September 12, 2025
💻 Mode: Online
🔗 Register Here: openai.devpost.com

🚀 Get Started

📥 Download Models: Hugging Face Collection
📘 Learn More: OpenAI Open Models
💻 GitHub Repo: gpt-oss
🌐 Microsite: gpt-oss.com

🏆 Prizes

Total prize pool $30,000+

💰 Best Overall

$10,000 cash

🤖 Best in Robotics

NVIDIA RTX6000 PRO GPU

🛠 Weirdest Hardware

$5,000 cash
NVIDIA RTX5090 GPU

💻 Best Local Agent

NVIDIA RTX5090 GPU

🎯 Most Useful Fine-Tune

$5,000 cash

🎲 Wildcard – Best Unexpected Use

$5,000 cash

🌍 For Humanity

$5,000 cash

📝 What to Submit

📌 Category Explanation: Choose the category or categories that best align with your project and explain why
📝 Text Description: Explain the features and functionality of your project
🎥 Demonstration Video: A video under 3 minutes showcasing your project
💻 Code Repository: Public repo link with clear gpt-oss usage (README, sample data or model weights/training data if fine-tuned). OSS/Apache License encouraged but not required

📋 Judging Criteria

🔍 Application of gpt-oss: Effective, category-aligned use that showcases unique strengths of the models
🎨 Design: Thoughtful user experience, balanced frontend and backend, safety considerations
🌐 Potential Impact: Scale of impact for target audience and beyond
💡 Novelty: Creativity, uniqueness and improvement over existing concepts