GPT-4.5 Preview API Pricing

GPT-4.5 Preview 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-4.5 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

GPT-4.5 Preview features

• Function calling
• Parallel tool calls
• Structured output
• Image input
• Prompt caching

Use GPT-4.5 Preview with LiteLLM

Call GPT-4.5 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/gpt-4.5-preview",
    messages=[{"role": "user", "content": "Hello!"}],
)

model_list:
  - model_name: gpt-4.5-preview
    litellm_params:
      model: azure/gpt-4.5-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": "gpt-4.5-preview",
    "messages": [{"role": "user", "content": "Hello!"}]
  }'

GPT-4.5 Preview FAQ

More OpenAI models

• GPT-4 O Preview
• GPT-4.1$2 / $8 per 1M tokens
• GPT-4.1 Mini$0.40 / $1.60 per 1M tokens
• GPT-4.1 Nano$0.10 / $0.40 per 1M tokens
• GPT-4 0125 Preview$10 / $30 per 1M tokens
• GPT-4 Turbo$10 / $30 per 1M tokens
• GPT-4 Turbo Vision Preview$10 / $30 per 1M tokens
• GPT-4 1106 Preview$10 / $30 per 1M tokens