o1 Preview API Pricing

o1 Preview 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 o1 Preview 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

o1 Preview features

• Prompt caching

Use o1 Preview with LiteLLM

Call o1 Preview 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="azure/eu/o1-preview",
    messages=[{"role": "user", "content": "Hello!"}],
)

model_list:
  - model_name: o1-preview
    litellm_params:
      model: azure/eu/o1-preview
      api_base: os.environ/AZURE_API_BASE
      api_key: os.environ/AZURE_API_KEY

curl http://0.0.0.0:4000/v1/chat/completions \
  -H "Content-Type: application/json" \
  -H "Authorization: Bearer sk-1234" \
  -d '{
    "model": "o1-preview",
    "messages": [{"role": "user", "content": "Hello!"}]
  }'

o1 Preview FAQ

More OpenAI models

• GPT-6.1 Sol$2 / $10 per 1M tokens
• GPT-6 Luna$0.10 / $0.50 per 1M tokens
• GPT-6 Sol$2 / $10 per 1M tokens
• GPT-5.4 High$2.50 / $15 per 1M tokens
• GPT-5.4 Low$2.50 / $15 per 1M tokens
• GPT-5.6 Sol Disc$4 / $20 per 1M tokens
• GPT Rosalind Research$5 / $25 per 1M tokens
• GPT-5.5 Cyber$12.50 / $75 per 1M tokens