OpenAI: GPT OSS 120B
gpt-oss-120b is an open-weight, 117B-parameter Mixture-of-Experts (MoE) language model from OpenAI designed for high-reasoning, agentic, and general-purpose production use cases. It activates 5.1B parameters per forward pass and is optimized to run on a single H100 GPU with native MXFP4 quantization. The model supports configurable reasoning depth, full chain-of-thought access, and native tool use, including function calling, browsing, and structured output generation.
Providers for OpenAI: GPT OSS 120B
RedPill routes requests to the best providers that are able to handle your prompt size and parameters, with fallbacks to maximize uptime.
API
RedPill provides an OpenAI-compatible completion API to all models & providers that you can call directly, or using the OpenAI SDK. Additionally, some third-party SDKs are available.
fetch("https://api.redpill.ai/v1/chat/completions", {
method: "POST",
headers: {
"Authorization": "Bearer <YOUR-REDPILL-API-KEY>",
"Content-Type": "application/json"
},
body: JSON.stringify({
"model": "openai/gpt-oss-120b",
"messages": [
{
"role": "user",
"content": "What is the meaning of life?"
}
]
})
})