Openai: gpt-oss-120b
gpt-oss-120b
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gpt-oss-120b is a high-end large language model from the GPT-OSS family, created for demanding enterprise and developer workloads. It delivers strong performance in multilingual dialogue, complex reasoning, and advanced coding assistance, while handling long, information-dense contexts with consistency. Teams use gpt-oss-120b for building intelligent chat assistants, automating content and documentation workflows, powering data-aware copilots, and integrating robust natural language understanding into their products and services.
Pricing
Current price per 1,000,000 tokens. Every request is billed automatically from its exact usage.
Included in plans
Statistics
Live performance and usage of this model, aggregated across all users.
Detailed statistics appear here as soon as this model starts receiving requests.
API
Call this model from any OpenAI-compatible client using your API token.
curl https://apiex.cloud/api/v1/chat/completions \
-H "Authorization: Bearer $NEW_API_KEY" \
-H "Content-Type: application/json" \
-d '{
"model": "gpt-oss-120b",
"messages": [
{
"role": "user",
"content": "Explain quantum entanglement in one paragraph."
}
],
"temperature": 0.7
}'Authentication
Every request must include an Authorization: Bearer <TOKEN> header. Generate a token from your account's API Keys page — its access to models is set automatically from your active plans and redeemed codes, and you can set its rate limit and IP restrictions.
| Parameter | Type | Description |
|---|---|---|
model | string, required | This model's ID, exactly as shown above. |
messages | array, required | Conversation history as role/content objects (system, user, assistant). |
temperature | number, optional | Sampling randomness, typically 0–2. |
max_tokens | integer, optional | Upper limit on tokens generated in the reply. |
top_p | number, optional | Nucleus-sampling threshold, as an alternative to temperature. |
stream | boolean, ignored | Responses are always returned in full so the exact cost can be billed; streaming is not available. |
Replace YOUR_API_KEY with a token from your account, then see the full API reference for every parameter.
Frequently asked questions
What is gpt-oss-120b?
gpt-oss-120b is a high-end large language model from the GPT-OSS family, created for demanding enterprise and developer workloads. It delivers strong performance in multilingual dialogue, complex reasoning, and advanced coding assistance, while handling long, information-dense contexts with consistency. Teams use gpt-oss-120b for building intelligent chat assistants, automating content and documentation workflows, powering data-aware copilots, and integrating robust natural language understanding into their products and services.
How much does gpt-oss-120b cost?
Input tokens are priced at $0,18 per 1,000,000 tokens and output tokens at $0,72 per 1,000,000 tokens. Pricing is billed automatically per request; no separate plan is required.
What is the context length of gpt-oss-120b?
gpt-oss-120b supports a context window of up to 131,072 tokens.
Does gpt-oss-120b support image input?
gpt-oss-120b currently accepts text input only.
Which provider is gpt-oss-120b from?
gpt-oss-120b is developed by Openai and made available on this gateway through our routing infrastructure.
When was gpt-oss-120b added to this gateway?
gpt-oss-120b has been available on this gateway since September 23, 2026.
Is gpt-oss-120b currently available?
Yes, gpt-oss-120b is active and can be used right now through this gateway.