GPT OSS 120B Ultra API Pricing

GPT OSS 120B Ultra pricing by provider

1 listing across 1 provider. Token prices are in US dollars per 1M tokens. The highlighted row is the price quoted above.

What GPT OSS 120B Ultra costs in practice

1,000 requests with 2,000 input and 500 output tokens each

100 long-document requests with 100,000 input and 2,000 output tokens each

GPT OSS 120B Ultra features

• Function calling
• Structured output
• Image input
• Reasoning

Use GPT OSS 120B Ultra with LiteLLM

Call GPT OSS 120B Ultra through the LiteLLM Python SDK, or put it behind the LiteLLM proxy and send OpenAI-format requests to /v1/chat/completions. LiteLLM tracks the cost of every request at these prices.

from litellm import completion

response = completion(
    model="deepinfra/openai/gpt-oss-120b-Ultra",
    messages=[{"role": "user", "content": "Hello!"}],
)

model_list:
  - model_name: gpt-oss-120b-ultra
    litellm_params:
      model: deepinfra/openai/gpt-oss-120b-Ultra
      api_key: os.environ/DEEPINFRA_API_KEY

curl http://0.0.0.0:4000/v1/chat/completions \
  -H "Content-Type: application/json" \
  -H "Authorization: Bearer sk-1234" \
  -d '{
    "model": "gpt-oss-120b-ultra",
    "messages": [{"role": "user", "content": "Hello!"}]
  }'

GPT OSS 120B Ultra FAQ

More OpenAI models

• GPT OSS 120B Turbo$0.15 / $0.60 per 1M tokens
• GPT OSS Safeguard 120B$0.15 / $0.60 per 1M tokens
• GPT OSS Safeguard 20B$0.07 / $0.20 per 1M tokens
• GPT OSSFree
• GPT OSS 120B MxfpFree
• GPT OSS 20B Mxfp4Free
• GPT OSS 120B$0.03 / $0.17 per 1M tokens
• GPT OSS 120B 1$0.15 / $0.60 per 1M tokens