Skip to main content

gpt-oss-120b

Description​

"gpt-oss-120b" is a 117-billion-parameter open reasoning model designed for agentic intelligence, adaptive decision-making, and multi-step problem solving. It integrates structured reasoning with dynamic tool orchestration, enabling autonomous agents to plan, evaluate, and act across complex real-world contexts. Fine-tuned on diverse analytical and interaction-rich datasets, it maintains coherence over long reasoning chains, balances exploration with precision, and delivers transparent, goal-directed thought processes suited for research, operational, and strategic domains.

The following limitations apply:

  • Maximum context length: 131,072 tokens
  • "built-in tools" like web browsing not supported for security reasons. Standard tool-calling remains available.

Recommended inference parameters:

  • temperature=1.0
  • top_p=1

You can adjust the reasoning effort done by this model by defining it inside your system prompt in the following way: "Reasoning: high". You have three options:

  • high: Deep and detailed analysis
  • medium: Balanced speed and detail
  • low: Fast responses for general dialogue

Terms of use and licensing​

The general terms of use apply. The model is provided by OpenAI under the Apache 2.0 License, and reuse of the generated content is not subject to any additional restrictions.