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o3 token cost
OpenAI · context 200,000 tokens · tokenizer Exact
Open in cost calculator · Count tokens · Full calculator · Official pricing
When to use o3
OpenAI reasoning model for harder problems where extra thinking tokens are worth the bill. Watch output cost: reasoning tokens are billed at the output rate.
Pricing
- Input
- $2.00/1M
- Output
- $8.00/1M
- Cached input
- $0.500/1M
- Batch input
- $1.00/1M
- Verified
Official pricing source · Open main calculator · Cheaper frontier models
Reasoning tokens are billed at the output rate.
Estimate with TokenCalculator
Preselect o3 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.
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Related guides
LLM API pricing · Exact vs Approx · OpenAI token calculator · o200k vs cl100k: which OpenAI encoding counts your text?
Sources and references
Official documentation used for definitions, counting methods, or rate cards. Always confirm critical budgets on the provider page.