GPT-5 Pro vs o3-mini

Compare OpenAI and OpenAI AI models

OpenAI

GPT-5 Pro

OpenAI

o3-mini

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

GPT-5 Pro

Per Request:$0.075

Daily:$7.50

Monthly:$225.00

Yearly:$2,737.50

o3-mini

Per Request:$0.003300

Daily:$0.33

Monthly:$9.90

Yearly:$120.45

Cost Differences

$0.0717

Per Request

$7.17

Daily

$215.10

Monthly

$2,617.05

Yearly

o3-mini costs less than GPT-5 Pro

Feature Comparison

Feature	GPT-5 Pro	o3-mini
Provider	OpenAI	OpenAI
Input Price	$15.00/1M tokens	$1.10/1M tokens
Output Price	$120.00/1M tokens	$4.40/1M tokens
Context Window	200,000 tokens	500,000 tokens
Max Output	100,000 tokens	65,536 tokens
Category	flagship	reasoning
Capabilities	textvisioncodereasoning	textreasoningcode
Release Date	8/7/2025	1/31/2025

GPT-5 Pro vs o3-mini: Which Should You Choose?

Choosing between GPT-5 Pro and o3-mini depends on your priorities: cost efficiency, context length, or raw capability. o3-mini is the more affordable option at $1.10/1M input tokens — 93% cheaper than GPT-5 Pro. Meanwhile, o3-mini offers a significantly larger context window at 500,000 tokens vs 200,000 for GPT-5 Pro.

These models target different tiers: GPT-5 Pro is a flagship model while o3-mini is reasoning. This means they're optimized for different workloads. GPT-5 Pro is built for complex tasks that require deeper reasoning, while o3-mini offers better value for routine operations.

Output costs matter too. GPT-5 Pro charges $120.00/1M output tokens vs $4.40 for o3-mini. For generation-heavy workloads (content creation, code generation, summarization), output pricing often dominates your bill. o3-mini has the edge here at $4.40/1M output tokens.

Multimodal capabilities: GPT-5 Pro supports vision (image inputs) while o3-mini is text-only. If your application needs image understanding, this narrows your choice.

Best Use Cases

Choose GPT-5 Pro when:

• You need more capabilities (vision)
• You need longer outputs (up to 100,000 tokens)
• You're already using OpenAI's API ecosystem

Choose o3-mini when:

• Budget is a primary concern
• You need a larger context window (500,000 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

GPT-5 Pro (OpenAI)

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o3-mini (OpenAI)

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Frequently Asked Questions

Which is cheaper, GPT-5 Pro or o3-mini?▼

o3-mini is cheaper for input tokens at $1.10 per million tokens vs $15.00 for GPT-5 Pro — that's 93% savings on input costs.

What is the context window difference between GPT-5 Pro and o3-mini?▼

GPT-5 Pro supports 200,000 tokens while o3-mini supports 500,000 tokens — a difference of 300,000 tokens in favor of o3-mini.

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

Both models support text, code, reasoning. For ai agent / agentic workflows, o3-mini is the lower-cost option, while o3-mini offers a larger context window (500,000 vs 200,000 tokens). Choose o3-mini for budget sensitivity or o3-mini 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, GPT-5 Pro costs about $225.00/month and o3-mini costs about $9.90/month. Overall, o3-mini has lower combined input + output rates ($1.10 in, $4.40 out) vs GPT-5 Pro.