o1
OpenAIUpdated March 2026. o1 by OpenAI: $15/M input, $60/M output tokens. 200K context, 100K max output. Vision & Function Calling. Free calculator + compare 40+ models.
Input Price
$15.00
per 1M tokens
Output Price
$60.00
per 1M tokens
Context Window
200K
tokens
Specifications
| Provider | OpenAI |
| Model ID | o1 |
| Input Price | $15 / 1M tokens |
| Output Price | $60 / 1M tokens |
| Context Window | 200K tokens |
| Max Output | 100K tokens |
| Capabilities | textvisionfunction_callingstructured_output |
| Release Date | 2024-12 |
| Notes | Legacy reasoning model. |
Monthly Cost Estimates
Estimated monthly costs based on different daily usage levels (assuming 50% input / 50% output split).
| Daily Tokens | Monthly Cost | Annual Cost |
|---|---|---|
| 10K | $11.25 | $135.00 |
| 50K | $56.25 | $675.00 |
| 100K | $112.50 | $1350.00 |
| 500K | $562.50 | $6750.00 |
| 1.0M | $1125.00 | $13500.00 |
About o1
o1 is a large language model by OpenAI. It features a 200K token context window with up to 100K tokens of output per request. The model supports 4 capabilities: text, vision, function_calling, structured_output.
At $15 per million input tokens and $60 per million output tokens, o1 is positioned as a premium option in the OpenAI lineup. Use our Token Counter to estimate how many tokens your prompts use, and our Pricing Calculator to compare costs across all models.
o1 Key Details
- Pricing: $15/M input tokens, $60/M output tokens
- Context window: 200K tokens — suitable for large documents and codebases
- Max output: 100K tokens per response
- Capabilities: text, vision, function_calling, structured_output
- Highlights: Legacy reasoning model.
- Released: 2024-12
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FAQ
How much does o1 cost?
o1 costs $15 per million input tokens and $60 per million output tokens. For a typical workload of 100K tokens/day, expect approximately $135.00/month.
What is o1's context window?
o1 supports a context window of 200K tokens. This means your combined input prompt and output response can be up to 200K tokens. The maximum output per response is 100K tokens.
Is o1 good for my use case?
o1 supports text, vision, function_calling, structured_output. As a premium model, it excels at complex reasoning, coding, and tasks requiring maximum quality. Use our Pricing Calculator to compare with alternatives.