openai
openai/gpt-oss-120b/Released Aug 2025

OpenAI/GPT-OSS-120B

Built with a Mixture-of-Experts design, delivers efficient, transparent reasoning, tool use, and agentic capabilities, even with 128K token context windows.

Provider
openai
Modality
text-to-text
Released
Aug 2025
Pricing
$0.15 / 1M in$0.60 / 1M out

Ready to build with OpenAI/GPT-OSS-120B?

Sign in to grab your API key and start making requests.
bash
curl -sSf -X POST https://staging.hub.oxen.ai/api/chat/completions \
    -H "Content-Type: application/json" \
    -H "Authorization: Bearer $OXEN_API_KEY" \
    -d '{
  "model": "gpt-oss-120b",
  "messages": [
    {
      "role": "user",
      "content": "Try sending a message."
    }
  ]
}'