Input Price
$20
per 1M tokens
Output Price
$80
per 1M tokens
Context Window
1,000K
tokens (131.072K max output)
Specifications
Release Date2025-06-10
Category🧠 Reasoning
Context Window1,000,000 tokens
Max Output131,072 tokens
Capabilities
textreasoningcode
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Monthly Cost Estimates
| Usage Level | Daily Tokens | Daily | Monthly | Yearly |
|---|---|---|---|---|
| Light~50 requests/day | 100K in / 20K out | $3.60 | $108.00 | $1314 |
| Medium~200 requests/day | 500K in / 100K out | $18.00 | $540.00 | $6570 |
| Heavy~1K requests/day | 2,000K in / 500K out | $80.00 | $2400.00 | $29200 |
| Enterprise~5K requests/day | 10,000K in / 2,000K out | $360.00 | $10800.00 | $131400 |
Cost Calculator
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Frequently Asked Questions
How much does o3-pro API cost per million tokens?▼
o3-pro costs $20 per million input tokens and $80 per million output tokens as of 2026. These are the standard API rates from OpenAI.
What is the o3-pro context window?▼
o3-pro supports a 1M context window (1,000,000 tokens), which means you can process up to 1M tokens in a single API call.
How much does o3-pro cost per month?▼
At medium usage (~200 requests/day with 500K input and 100K output tokens/day), o3-pro costs approximately $540.00/month. Light usage runs about $108.00/month, and heavy usage (~1K requests/day) around $2400.00/month.
Is there a cheaper alternative to o3-pro?▼
Yes — Claude 3 Opus by Anthropic is a cheaper option at $15/M input tokens vs $20/M for o3-pro. Other budget alternatives include models in the efficient tier.
Is o3-pro good for ai agent / agentic workflows?▼
o3-pro is a reasoning model with support for text, reasoning, code. For ai agent / agentic workflows, it offers 1M context and costs $20/M input tokens — a premium option for this use case.
o3-pro Comparisons
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