gpt-oss-120b

Live
OpenAI

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. The model supports configurable reasoning depth, full chain-of-thought access, and native tool use, including function calling, browsing, and structured output generation.

Modality

Chat

Context window

131K tokens

Max output

16K tokens

Region

US

Published

Jul 21, 2026

Pricing

Input

2.08

EGP per 1M tokens

Output

9.55

EGP per 1M tokens

Use it via the API

gpt-oss-120b works with any OpenAI-compatible SDK — point the base URL at https://preprod-backend.sovereigneg.com/v1 and use your SovereignEG API key.

Run inference

OpenAI-compatible — POST /v1/chat/completions — drop-in for any OpenAI SDK.

from openai import OpenAI

client = OpenAI(
    base_url="https://preprod-backend.sovereigneg.com/v1",
    api_key="YOUR_API_KEY",
)

response = client.chat.completions.create(
    model="gpt-oss-120b",
    messages=[
        {"role": "user", "content": "What are some fun things to do in Cairo?"}
    ],
)

print(response.choices[0].message.content)

Frequently asked questions

How much does gpt-oss-120b cost?

2.08 EGP per 1M input tokens; 9.55 EGP per 1M output tokens. Billing is metered per token in Egyptian pounds (EGP), with no minimum commitment.

What is the context window of gpt-oss-120b?

gpt-oss-120b supports a context window of 131,072 tokens (131K), with up to 16,384 output tokens per response.

Where is gpt-oss-120b hosted?

gpt-oss-120b is served from US (US-hosted inference).

How do I use gpt-oss-120b via the API?

gpt-oss-120b is available through the OpenAI-compatible SovereignEG API: point your SDK's base URL at https://preprod-backend.sovereigneg.com/v1 and call /v1/chat/completions with model "gpt-oss-120b" and your API key.