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OpenAI
GPT-OSS 120B
Open weightsapache-2.0Released Apr 1, 2026
OpenAI's first open-weight large model with 120 billion parameters. Released under Apache 2.0 license, offering strong performance on reasoning and coding tasks while being fully self-hostable.
ChatText completionFunction callingCode generationReasoningtext · code
Available from 2 providers
Cheapest
Together AI
$1.80 / $1.80
OpenAI, Together AI
Providers (2)
Sorted by total cost (input + output per 1M tokens). Select a row to view provider details.
| Provider | Pricing (per 1M) | Rate limits | Regions | Health | Latency |
|---|---|---|---|---|---|
| In: $1.80Out: $1.80 | 600 RPM / 1.0M TPM | us-east-1us-west-2 | Healthy | 0ms |
| In: $2.00Out: $6.00 | 500 RPM / 500K TPM | us-east-1eu-west-1 | Healthy | 0ms |
Quick start
Use this model via Together AI with an OpenAI-compatible SDK.
import OpenAI from "openai";
const client = new OpenAI({
baseURL: "https://api.together.xyz/v1",
apiKey: process.env.TOGETHER_API_KEY,
});
const response = await client.chat.completions.create({
model: "openai/gpt-oss-120b",
messages: [
{ role: "user", content: "Hello!" }
],
});
console.log(response.choices[0].message.content);Using Together AI API · OpenAI-compatible SDK