o3 Deep Research API Pricing

o3 Deep Research pricing by provider

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

What o3 Deep Research 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

o3 Deep Research features

Input: text, image. Output: text.

• Function calling
• Parallel tool calls
• Structured output
• Image input
• PDF input
• Reasoning
• Prompt caching
• Web search

Use o3 Deep Research with LiteLLM

Call o3 Deep Research through the LiteLLM Python SDK, or put it behind the LiteLLM proxy and send OpenAI-format requests to /v1/responses. LiteLLM tracks the cost of every request at these prices.

from litellm import completion

response = completion(
    model="o3-deep-research",
    messages=[{"role": "user", "content": "Hello!"}],
)

model_list:
  - model_name: o3-deep-research
    litellm_params:
      model: o3-deep-research
      api_key: os.environ/OPENAI_API_KEY

curl http://0.0.0.0:4000/v1/chat/completions \
  -H "Content-Type: application/json" \
  -H "Authorization: Bearer sk-1234" \
  -d '{
    "model": "o3-deep-research",
    "messages": [{"role": "user", "content": "Hello!"}]
  }'

o3 Deep Research FAQ

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