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OpenAI o1
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OpenAI o1

by OpenAI

Advanced AI model for complex reasoning tasks.

Reviewed May 2026by CBAI Editorial Team
8.0/10

Score

4.0 out of 5 · our score
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Developer

Our verdict

OpenAI o1 is a powerful AI model tailored for complex reasoning tasks, offering advanced features like function calling and vision capabilities. Its Pro plan provides unlimited access, making it suitable for professional developers and larger teams. However, casual users may find the advanced features unnecessary for simple tasks, and non-technical users might struggle to fully utilize its capabilities.

Overview

OpenAI o1 is a generative pre-trained transformer (GPT) model developed by OpenAI, introduced in September 2024. It is designed to perform complex reasoning tasks, including science, coding, and mathematics, by spending more time 'thinking' before responding. This approach enables it to handle intricate problems more effectively than previous models. OpenAI o1 is accessible through ChatGPT Plus and Team subscriptions, as well as via the OpenAI API, providing flexibility for v…

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

  • ·Complex Problem Solving
  • ·Advanced Coding Tasks
  • ·Scientific Research
  • ·Multi-Step Workflows

Method

Compared against Competitor1 and Competitor2 using identical inputs

Reviewer

CBAI Editorial Team

Plans & pricing

Free

$0/mo

Individual developers and small teams

  • Limited access to o1 and GPT-4o models
  • Basic support
Most Popular

Pro

$200/mo

Professional developers and larger teams

  • Unlimited access to o1 and GPT-4o models
  • Advanced support
  • Additional features

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

Feature comparison

FeatureOpenAI o1Competitor1Competitor2
Core
Advanced Reasoning Capabilities
Function Calling
Structured Outputs
Vision Capabilities
Developer Messages
Pricing
Free plan available
Included Partial / add-on Not included

Is it right for you?

Good fit for

Healthcare Researchers

Analyze complex data sets with advanced reasoning capabilities.

Physicists

Model intricate systems and simulations effectively.

Developers

Build and execute multi-step workflows with ease.

Less suited for

Casual Users

May find the advanced features unnecessary for simple tasks.

Non-Technical Users

Requires technical expertise to fully utilize the model's capabilities.

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.

  • ["ChatGPT Plus","ChatGPT Team","OpenAI API"]

Details

Category

Developer

Price

  • Free
  • Pro $200/mo
  • Enterprise custom

Free version

Yes

Best for

  • Healthcare researchers analyzing complex data
  • Physicists modeling intricate systems
  • Developers building multi-step workflows.

Frequently asked questions

OpenAI o1

OpenAI o1

Developer

Ready to get started?

Visit the OpenAI o1 website to explore plans and start your free trial.

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