GPT OSS API Pricing

GPT OSS pricing by provider

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

What GPT OSS 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 features

• Function calling

Use GPT OSS with LiteLLM

Call GPT OSS 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="ollama/gpt-oss:20b-cloud",
    messages=[{"role": "user", "content": "Hello!"}],
)

model_list:
  - model_name: gpt-oss
    litellm_params:
      model: ollama/gpt-oss:20b-cloud
      # credentials: see the provider's LiteLLM docs page

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

GPT OSS FAQ

More OpenAI models

• GPT OSS 120B Turbo$0.15 / $0.60 per 1M tokens
• GPT OSS 120B Ultra$0.20 / $0.95 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 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