Cerebras: GPT OSS 120B

Name: GPT OSS 120B API
Brand: Cerebras

stable

GPT OSS 120B is available through Everstack's OpenAI-compatible gateway with routing, fallback, retries, and observability.

gpt-oss-120bgpt-ossreleased Aug 5, 2025

Provider Quick start

Context

131.1K

tokens

Max output

41.0K

tokens

Input

$0.35

per 1M

Output

$0.75

per 1M

Activity

Daily period usage

Aggregated managed Everstack traffic. Buckets below 5 tenants or 100 requests are withheld.

Providers

ProviderContextInput /MOutput /M

Cerebras

131.1K$0.35$0.75

Pricing

Item	Price	Unit
Input	$0.35	per 1M tokens
Output	$0.75	per 1M tokens

Performance

Reliability

Compare

Compare usage and performance

Place this model beside up to three other catalog models.

Capabilities

Modalities

Input

Output

Details

Model ID: gpt-oss-120b
Family: gpt-oss
Status: stable
Knowledge: -
Released: Aug 5, 2025

Gateway Config

API: 2024-01-01
Auth: CEREBRAS_API_KEY
Discovery: static
Provider type: static

Quick Start

index.ts

import Everstack from "@everstack/node";const client = new Everstack({  apiKey: process.env.EVERSTACK_API_KEY!,  baseUrl: "https://{instance}.{region}.everstack.ai",});const completion = await client.chat.completions.create({  model: "@cerebras/gpt-oss-120b",  messages: [{ role: "user", content: "Explain vector cache routing." }],});console.log(completion.choices[0]?.message?.content);

Endpoint

Base URL

https://api.cerebras.ai/v1

Chat completions

https://api.cerebras.ai/v1/chat/completions

Model

gpt-oss-120b

Auth env

CEREBRAS_API_KEY

GPT OSS 120B FAQ

How much does the GPT OSS 120B API cost?

Through Cerebras, GPT OSS 120B costs $0.35 per 1M input tokens and $0.75 per 1M output tokens.

What is the context window of GPT OSS 120B?

GPT OSS 120B accepts up to 131.1K tokens of context and returns up to 41.0K output tokens on Cerebras.

What can GPT OSS 120B do?

GPT OSS 120B supports chat, function calling and reasoning. It accepts text input.

How do I call GPT OSS 120B through Everstack?

Point any OpenAI-compatible SDK at your Everstack gateway and set the model to @cerebras/gpt-oss-120b. Everstack adds retries, provider fallback, caching, per-tenant budgets and OpenTelemetry traces for every request.