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o1 token cost
OpenAI · context 200,000 tokens · tokenizer Exact
Open in cost calculator · Count tokens · Full calculator · Official pricing
When to use o1
Legacy high-cost OpenAI reasoning model kept for historical budget comparisons. Prefer o3 or GPT-5 reasoning paths for new work unless you are pinned to o1.
Pricing
- Input
- $15.00/1M
- Output
- $60.00/1M
- Cached input
- $7.50/1M
- Verified
Official pricing source · Open main calculator
Reasoning tokens billed at output rate.
Estimate with TokenCALC
Preselect o1 in the calculator to count tokens and project request or monthly cost. Exact vs Approx follows this model's tokenizer family. See the Exact vs Approx guide for honesty rules.