Skip to content
OpenMayhem
WhyExploreModel fitTrust & feesFAQ
GitHubGet started
OpenMayhem
WhyExploreModel fitTrust & feesFAQ
GitHubGet started
  1. Explore
  2. /
  3. GPT-OSS 120B

OpenAI

Text model

GPT-OSS 120B

OpenAI's larger open-weight model for advanced reasoning and tools.

ChatCoding
Use this model See capabilities

Input to output

Text→Text
Context
128K tokens
Model size
117B / 5.1B active
Capabilities
Chat · Coding
License
Apache-2.0

Useful features

Advanced reasoningTool callingStructured outputAgentic loops

Capabilities

What you can use it for.

The most useful reasons to choose this model, without making you read through its repository first.

Advanced reasoningTool callingStructured outputAgentic loops
01

Advanced reasoning

02

Complex agents

03

Structured tool use

For providers

Want to serve this model?

The provider requirements live here, separate from the information you need to choose and use the model.

Starting point80 GB GPU memory
Check your hardware in the fit calculator

80 GB accelerator memory

MXFP4 · vLLM / TensorRT-LLM

Model source

OpenAI supports a single 80 GB GPU; NVIDIA has also demonstrated it on 128 GB DGX Spark.

2 accelerators · 80 GB total

MXFP4 · tensor parallel · vLLM

Conservative estimate

A sharded run depends on the exact approved backend and still needs context headroom.

Source and license

Check the original model.

OpenMayhem links back to the source repository so you can inspect the model card, files, license, limitations, and creator guidance directly.

Source repositoryopenai/gpt-oss-120bOpen model card

Keep exploring

Related models

View all text

Qwen3.6 35B A3B Uncensored

Context · 262K tokens

Gemma 4 E4B

Context · 128K tokens

GPT-OSS 20B

Context · 128K tokens
View all text
OpenMayhem

An open, peer-to-peer marketplace for AI inference. Buy compute through your own gateway, or sell the compute you already own.

Project

  • Explore models
  • GitHub repository ↗ (opens in a new tab)
  • Marketplace rules ↗ (opens in a new tab)
  • Model catalog ↗ (opens in a new tab)

Ecosystem

  • Trac Network ↗ (opens in a new tab)
  • Trac Systems ↗ (opens in a new tab)
  • Community on Reddit ↗ (opens in a new tab)

OpenMayhem is built and operated by Trac Systems UG (haftungsbeschränkt). The software is open source and released under the MIT license; the OpenMayhem and Trac names and logos are trademarks of Trac Systems. The repository is the source of truth for everything described here.

Legal noticePrivacy policy