GPT-5 Pro vs o3 Deep Research

Compare OpenAI and OpenAI AI models

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GPT-5 Pro

OpenAI

o3 Deep Research

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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 Deep Research

Per Request:$0.03

Daily:$3.00

Monthly:$90.00

Yearly:$1,095.00

Cost Differences

$0.045

Per Request

$4.50

Daily

$135.00

Monthly

$1,642.50

Yearly

o3 Deep Research costs less than GPT-5 Pro

Feature Comparison

Feature	GPT-5 Pro	o3 Deep Research
Provider	OpenAI	OpenAI
Input Price	$15.00/1M tokens	$10.00/1M tokens
Output Price	$120.00/1M tokens	$40.00/1M tokens
Context Window	200,000 tokens	200,000 tokens
Max Output	100,000 tokens	32,768 tokens
Category	flagship	reasoning
Capabilities	textvisioncodereasoning	textreasoningvisioncode
Release Date	8/7/2025	6/26/2025

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

Choosing between GPT-5 Pro and o3 Deep Research depends on your priorities: cost efficiency, context length, or raw capability. o3 Deep Research is the more affordable option at $10.00/1M input tokens — 33% cheaper than GPT-5 Pro.

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

Output costs matter too. GPT-5 Pro charges $120.00/1M output tokens vs $40.00 for o3 Deep Research. For generation-heavy workloads (content creation, code generation, summarization), output pricing often dominates your bill. o3 Deep Research has the edge here at $40.00/1M 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 GPT-5 Pro when:

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

Choose o3 Deep Research when:

• Budget is a primary concern
• 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 Deep Research (OpenAI)

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Frequently Asked Questions

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

o3 Deep Research is cheaper for input tokens at $10.00 per million tokens vs $15.00 for GPT-5 Pro — that's 33% savings on input costs.

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

GPT-5 Pro supports 200,000 tokens while o3 Deep Research supports 200,000 tokens — a difference of 0 tokens in favor of GPT-5 Pro.

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

Both models support text, code, reasoning. For ai agent / agentic workflows, o3 Deep Research is the lower-cost option, while GPT-5 Pro offers a larger context window (200,000 vs 200,000 tokens). Choose o3 Deep Research for budget sensitivity or GPT-5 Pro 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 Deep Research costs about $90.00/month. Overall, o3 Deep Research has lower combined input + output rates ($10.00 in, $40.00 out) vs GPT-5 Pro.