Model Details
Where is o1 Pro a perfect fit?
- Complex multi-step reasoning, advanced scientific/engineering problem solving, and high-accuracy verification tasks.
- Research workflows that require extended chain-of-thought and deep, stepwise analysis.
- High-stakes code generation, formal verification, and analytics where correctness matters.
Quick Model Estimate
Your o1 Pro Cost Estimate
💰 Total Cost
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for 1000 input + 1000 output tokens
Cost Breakdown
Prices are watched for changes and checked against the provider's own page.
Pricing
Recent changes
When o1 Pro was newly listed on a provider, moved to legacy or deprecated, or retired.
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Retired
OpenAI retired o1 Pro, with GPT-5.6 Sol as the suggested replacement.
Other Models in the o1 Family
FAQs about o1 Pro
How much does o1 Pro cost per 1M tokens?
o1 Pro costs between $75.00 and $150.00 per million input tokens, and between $300.00 and $600.00 per million output tokens. The range covers Standard and Batch pricing.
What does a typical workload cost with o1 Pro?
1,000 requests of 2,000 input and 500 output tokens each — 2,000,000 input and 500,000 output tokens in total — costs $300.00 with o1 Pro at its lowest rates. Use the calculator on this page for your own volumes.
Where can I use o1 Pro?
o1 Pro is available through OpenAI, from $75.00 per million input tokens.
Is there cheaper o1 Pro pricing than the standard rate?
Yes. Batch pricing for o1 Pro starts at $75.00 per million input tokens against $150.00 on the standard tier, about 50% lower.
What is o1 Pro's context window?
o1 Pro has a context window of 200,000 tokens, and returns up to 100,000 tokens in a single response.
Is o1 Pro still available?
o1 Pro is a legacy model and was retired on 23 October 2026. The replacement is GPT-5.6 Sol.