o3 Pro API Pricing

As of October 10, 2026, o3 Pro costs $20.00 per 1M input tokens and $80.00 per 1M output tokens on OpenAI. It has a 200,000-token context window and returns up to 100,000 tokens per response.

By OpenAIModel ID o3-proPrices updated October 10, 2026Checked October 10, 2026

Input: $20.00 / 1M tokens
Output: $80.00 / 1M tokens
Context window: 200,000 tokens
Max output: 100,000 tokens
Providers: 2
Added to LiteLLM: June 2025

o3 Pro 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.

Provider	Model name in LiteLLM	Input	Output	Batch in	Batch out	Context
OpenAI	`o3-pro`	$20.00	$80.00	$10.00	$40.00	200K
OpenAIsnapshot 2025-06-10	`o3-pro-2025-06-10`	$20.00	$80.00	$10.00	$40.00	200K
Azure OpenAI	`azure/o3-pro`	$20.00	$80.00	$10.00	$40.00	200K
Azure OpenAIsnapshot 2025-06-10	`azure/o3-pro-2025-06-10`	$20.00	$80.00	$10.00	$40.00	200K

Other o3 Pro prices on OpenAI

Web search

$10.00 per 1K searches

What o3 Pro costs in practice

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

OpenAI	$80.00
Azure OpenAI	$80.00
OpenAI batch	$40.00

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

OpenAI	$216.00
Azure OpenAI	$216.00

o3 Pro features

Input: text, image. Output: text.

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

Use o3 Pro with LiteLLM

Call o3 Pro 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.

Python SDK

from litellm import completion

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

Proxy config.yaml

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

Call the proxy

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

o3 Pro FAQ

How much does o3 Pro cost?

o3 Pro costs $20.00 per 1M input tokens and $80.00 per 1M output tokens on OpenAI. Batch requests cost $10.00 per 1M input tokens and $40.00 per 1M output tokens.

What is the context window of o3 Pro?

o3 Pro has a 200,000-token context window and returns up to 100,000 tokens per response.

Which providers offer o3 Pro?

o3 Pro is available from 2 providers through LiteLLM: OpenAI and Azure OpenAI.

How do I call o3 Pro with an OpenAI-compatible API?

Use the LiteLLM Python SDK with model="o3-pro", or add the model to the LiteLLM proxy's config.yaml and send requests to /v1/responses from any OpenAI client. LiteLLM tracks the cost of every request at the prices on this page.

What features does o3 Pro support?

o3 Pro supports function calling, structured output, image input, PDF input, reasoning, prompt caching and web search. It does not support parallel tool calls.

When did LiteLLM add o3 Pro?

o3 Pro was added to LiteLLM's model price file in June 2025.

Sources

Prices come from LiteLLM's open-source model_prices_and_context_window.json, which LiteLLM uses to calculate the cost of every request. Provider pricing pages:

LiteLLM docs: OpenAI, Azure OpenAI.

Provider pages: OpenAI, Azure OpenAI.