OpenAI: Gpt-oss-120b (free)
Reasoning. Local. Free.
Deploy Enterprise Reasoning Locally
Near-Parity Performance
O4-Mini Level Reasoning
Matches OpenAI o4-mini on core benchmarks while running on single 80GB GPU.
Apache 2.0 Licensed
Build Without Restrictions
Commercial-grade freedom. No copyleft, no patent risk, full customization support.
Mixture-of-Experts
128 Experts, 4 Active
Efficient routing activates specialized experts per token for optimized inference.
Examples
See what OpenAI: Gpt-oss-120b (free) can create
Copy any prompt below and try it yourself in the playground.
Code Generation
“Write a production-grade Python function that implements a binary search tree with insert, delete, and search operations. Include comprehensive error handling and type hints.”
Mathematical Reasoning
“Solve this step-by-step: A rectangular garden is 24 meters long and 18 meters wide. If you want to build a path of uniform width around the perimeter, and the path area equals the garden area, what is the path width?”
Technical Documentation
“Create API documentation for a REST endpoint that accepts user authentication tokens and returns paginated results. Include request/response schemas, error codes, and rate limiting details.”
Data Analysis
“Analyze quarterly sales data trends across three regions and identify which product categories show growth potential. Recommend optimization strategies based on patterns.”
For Developers
A few lines of code.
Reasoning model. Zero cost.
ModelsLab handles the infrastructure: fast inference, auto-scaling, and a developer-friendly API. No GPU management needed.
- Serverless: scales to zero, scales to millions
- Pay per token, no minimums
- Python and JavaScript SDKs, plus REST API
import requestsresponse = requests.post("https://modelslab.com/api/v7/llm/chat/completions",json={"key": "YOUR_API_KEY","prompt": "","model_id": ""})print(response.json())
Ready to create?
Start generating with OpenAI: Gpt-oss-120b (free) on ModelsLab.