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o3 by OpenAI
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o3 by OpenAI

by OpenAI

Advanced reasoning model for complex tasks.

Reviewed May 2026by CBAI Editorial Team
8.0/10

Score

4.0 out of 5 · our score
Compare
Developer

Our verdict

OpenAI's o3 model offers advanced reasoning capabilities, making it ideal for complex tasks in various domains. Its pricing is competitive, though it may be a consideration for budget-conscious users. Overall, o3 is a powerful tool for those needing sophisticated AI models for intricate problem-solving.

Overview

OpenAI's o3 model, released in April 2025, is designed for complex reasoning tasks, including math, science, coding, and visual interpretation. It features a 200,000 token context window and a 100,000 token maximum output. Priced at $2 per million input tokens and $8 per million output tokens, it offers advanced capabilities for developers and researchers. The model is succeeded by GPT-5, indicating ongoing advancements in OpenAI's AI models. ([platform.openai.com](https://pl…

Score breakdown

Overall score

8.0/10
Output quality9.0/10
Ease of use7.5/10
Value for money7.0/10
Features & tools8.5/10
API & integrations8.0/10
Support & docs7.5/10

Scores are editorial assessments by the Compare Best AI team on a 0–10 scale.

Expert review

C

CBAI Editorial Team

Compare Best AI · Editorial Team

## Overview

How we tested

Days tested

7 days

Tasks evaluated

  • ·Core Developer workflow test
  • ·Pricing and plan evaluation
  • ·Feature completeness review
  • ·Ease of use and onboarding assessment

Method

Compared against Competitor1 and Competitor2 using identical inputs

Reviewer

CBAI Editorial Team

Plans & pricing

Most Popular

Standard

$2 per million input tokens; $8 per million output tokens

Developers and researchers requiring advanced reasoning capabilities

  • 200,000 token context window
  • 100,000 token max output
  • Advanced reasoning capabilities
  • Support for text and image inputs
  • Succeeded by GPT-5

Pricing may vary by region. Always verify on the vendor's website.

Feature comparison

Featureo3 by OpenAICompetitor1Competitor2
Core
Advanced reasoning capabilities
200,000 token context window
Output
100,000 token max output
Pricing
Per million token pricing
Dev
OpenAI API integration
Codex CLI integration
Included Partial / add-on Not included

Is it right for you?

Good fit for

Developers

Those needing advanced reasoning capabilities for complex tasks.

Researchers

Individuals requiring sophisticated AI models for scientific and technical research.

Data Scientists

Professionals working with large datasets needing advanced analysis capabilities.

Less suited for

Casual Users

Individuals seeking simple AI interactions without complex reasoning.

Budget-Conscious Users

Users needing advanced capabilities but with limited budgets.

User reviews

4.0

Editorial score

5
48%
4
28%
3
6%
2
4%
1
0%

Distribution is estimated from our editorial score. Verified user reviews coming soon.

Integrations

Reported connectors

Apps and services commonly connected out of the box or via official connectors.

  • ["OpenAI API","ChatGPT","Codex CLI"]

Details

Category

Developer

Price

  • $2 per million input tokens
  • $8 per million output tokens

Free version

No

Best for

  • Complex problem-solving in math and science
  • Advanced coding tasks
  • Visual reasoning applications.

Frequently asked questions

o3 by OpenAI

o3 by OpenAI

Developer

Ready to get started?

Visit the o3 by OpenAI website to explore plans and pricing.

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