o1 Pro vs o3

Compare OpenAI and OpenAI AI models

OpenAI

o1 Pro

OpenAI

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Cost Comparison (1000 input + 500 output tokens, 100 requests/day)

o1 Pro

Per Request:$0.45

Daily:$45.00

Monthly:$1,350.00

Yearly:$16,425.00

o3

Per Request:$0.006000

Daily:$0.60

Monthly:$18.00

Yearly:$219.00

Cost Differences

$0.444

Per Request

$44.40

Daily

$1,332.00

Monthly

$16,206.00

Yearly

o3 costs less than o1 Pro

Feature Comparison

Feature	o1 Pro	o3
Provider	OpenAI	OpenAI
Input Price	$150.00/1M tokens	$2.00/1M tokens
Output Price	$600.00/1M tokens	$8.00/1M tokens
Context Window	200,000 tokens	1,000,000 tokens
Max Output	100,000 tokens	131,072 tokens
Category	flagship	reasoning
Capabilities	textvisioncodereasoning	textreasoningvisioncode
Release Date	12/17/2024	4/16/2025

o1 Pro vs o3: Which Should You Choose?

Choosing between o1 Pro and o3 depends on your priorities: cost efficiency, context length, or raw capability. o3 is the more affordable option at $2.00/1M input tokens — 99% cheaper than o1 Pro. Meanwhile, o3 offers a significantly larger context window at 1,000,000 tokens vs 200,000 for o1 Pro.

These models target different tiers: o1 Pro is a flagship model while o3 is reasoning. This means they're optimized for different workloads. o1 Pro is built for complex tasks that require deeper reasoning, while o3 offers better value for routine operations.

Output costs matter too. o1 Pro charges $600.00/1M output tokens vs $8.00 for o3. For generation-heavy workloads (content creation, code generation, summarization), output pricing often dominates your bill. o3 has the edge here at $8.00/1M output tokens.

Multimodal capabilities: Both models support vision (image understanding), so you can send images alongside text prompts with either option.

Best Use Cases

Choose o1 Pro when:

• You're already using OpenAI's API ecosystem

Choose o3 when:

• Budget is a primary concern
• You need a larger context window (1,000,000 tokens)
• You need longer outputs (up to 131,072 tokens)
• You're already using OpenAI's API ecosystem

Try Different Scenarios

Use the calculator below to see how costs change with different usage patterns

o1 Pro (OpenAI)

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o3 (OpenAI)

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Start using o1 Pro today

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Frequently Asked Questions

Which is cheaper, o1 Pro or o3?▼

o3 is cheaper for input tokens at $2.00 per million tokens vs $150.00 for o1 Pro — that's 99% savings on input costs.

What is the context window difference between o1 Pro and o3?▼

o1 Pro supports 200,000 tokens while o3 supports 1,000,000 tokens — a difference of 800,000 tokens in favor of o3.

Which model is better for AI Agent / Agentic Workflows?▼

Both models support text, code, reasoning. For ai agent / agentic workflows, o3 is the lower-cost option, while o3 offers a larger context window (1,000,000 vs 200,000 tokens). Choose o3 for budget sensitivity or o3 for longer context tasks.

Which model has better overall pricing for heavy usage?▼

At 100 requests/day with 1,000 input and 500 output tokens each, o1 Pro costs about $1,350.00/month and o3 costs about $18.00/month. Overall, o3 has lower combined input + output rates ($2.00 in, $8.00 out) vs o1 Pro.