Model Details
Where is o1 a perfect fit?
- Complex math, science, and multi-step reasoning tasks.
- High-accuracy code generation, verification, and debugging workflows.
- Research-grade analysis where chain-of-thought style reasoning improves outcomes.
- Situations where correctness matters more than raw speed or cost.
Quick Model Estimate
Your o1 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 was newly listed on a provider, moved to legacy or deprecated, or retired.
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Retired
OpenAI retired o1, with GPT-5.6 Sol as the suggested replacement.
Other Models in the o1 Family
FAQs about o1
How much does o1 cost per 1M tokens?
o1 costs between $7.50 and $15.00 per million input tokens, and between $30.00 and $60.00 per million output tokens. The range covers Standard and Batch pricing.
What does a typical workload cost with o1?
1,000 requests of 2,000 input and 500 output tokens each — 2,000,000 input and 500,000 output tokens in total — costs $30.00 with o1 at its lowest rates. Use the calculator on this page for your own volumes.
Where can I use o1?
o1 is available through OpenAI, from $7.50 per million input tokens.
Is there cheaper o1 pricing than the standard rate?
Yes. Batch pricing for o1 starts at $7.50 per million input tokens against $15.00 on the standard tier, about 50% lower.
What is o1's context window?
o1 has a context window of 200,000 tokens, and returns up to 100,000 tokens in a single response.
Is o1 still available?
o1 is a legacy model and was retired on 23 October 2026. The replacement is GPT-5.6 Sol.