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🧠 ReasoningEnterprise

o3-pro

by OpenAI

Premium reasoning model for the most demanding tasks

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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
ProviderOpenAI
Input Cost$20 / 1M tokens
Output Cost$80 / 1M tokens
Price TierEnterprise

Capabilities

textreasoningcode

Related Use Cases

🤖

AI Agent / Agentic Workflows

Calculate the cost of running AI agents that use tools, make decisions, and complete multi-step tasks.

~10,000 in · ~3,000 out
💬

AI Chatbot

Calculate the API cost of running a customer support or conversational AI chatbot.

~2,000 in · ~500 out
📄

Document Summarizer

Calculate how much it costs to summarize documents, reports, and articles with AI.

~8,000 in · ~1,000 out
💻

AI Code Assistant

Calculate the cost of building an AI-powered coding assistant or copilot.

~4,000 in · ~2,000 out
✍️

Content Generation

Calculate the cost of generating blog posts, marketing copy, and articles with AI.

~1,500 in · ~3,000 out
🔍

Data Extraction

Calculate the cost of extracting structured data from unstructured text with AI.

~3,000 in · ~1,500 out

Monthly Cost Estimates

Usage LevelDaily TokensDailyMonthlyYearly
Light~50 requests/day100K in / 20K out$3.60$108.00$1314
Medium~200 requests/day500K in / 100K out$18.00$540.00$6570
Heavy~1K requests/day2,000K in / 500K out$80.00$2400.00$29200
Enterprise~5K requests/day10,000K in / 2,000K out$360.00$10800.00$131400

Cost Calculator

Alternatives to o3-pro

💰 Cheaper Options

Claude 3 OpusAnthropic
10% cheaper
$15/M in · $75/M out
Claude Opus 4.1Anthropic
10% cheaper
$15/M in · $75/M out
Claude Opus 4Anthropic
10% cheaper
$15/M in · $75/M out
o1OpenAI
25% cheaper
$15/M in · $60/M out

🚀 More Powerful

GPT-5 ProOpenAI
35% more
$15/M in · $120/M out
GPT-5.2 proOpenAI
89% more
$21/M in · $168/M out
GPT-5.5 ProOpenAI
110% more
$30/M in · $180/M out
GPT-5.4 ProOpenAI
110% more
$30/M in · $180/M out

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

codex mini latest vs o3 proo3 pro vs o4 mini deep researcho3 deep research vs o3 progpt 5 2 vs o3 progpt 5 2 pro vs o3 progpt 5 5 vs o3 progpt 5 5 instant vs o3 progpt 5 5 pro vs o3 pro

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