CompareBestAI
Join UsJoin Us
ChatGPT 4.5
Editor's Choice

ChatGPT 4.5

by OpenAI

OpenAI's advanced language model for developers.

Reviewed May 2026by CBAI Editorial Team
7.5/10

Score

3.8 out of 5 · our score
Compare
Developer

Our verdict

GPT-4.5 was OpenAI's largest language model, offering advanced natural language understanding and emotional intelligence. However, its high computational demands and cost led to its retirement in August 2025, with GPT-5 now serving as the primary model for such applications.

Overview

GPT-4.5, codenamed 'Orion,' was OpenAI's largest language model, released on February 27, 2025. It provided developers with advanced natural language understanding and generation capabilities, excelling in tasks requiring nuanced writing and emotional intelligence. However, due to its high computational demands and cost, it was retired on August 7, 2025, with the release of GPT-5, which now serves as the primary model for such applications.

Score breakdown

Overall score

7.5/10
Output quality8.0/10
Ease of use6.5/10
Value for money5.0/10
Features & tools8.0/10
API & integrations7.0/10
Support & docs6.0/10

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 GPT-4o and GPT-4.1 using identical inputs

Reviewer

CBAI Editorial Team

Plans & pricing

Most Popular

Pro

$200/mo

Developers requiring advanced language processing capabilities

  • Access to GPT-4.5
  • Priority support
  • Early access to new features

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

Feature comparison

FeatureChatGPT 4.5GPT-4oGPT-4.1
Core
Advanced natural language understanding
Enhanced emotional intelligence
Nuanced writing capabilities
Pricing
Free plan available
Dev
Public API
Integrations
Included Partial / add-on Not included

Is it right for you?

Good fit for

Content Creators

Ideal for generating high-quality, nuanced content.

Developers

Suitable for integrating advanced language models into applications.

Researchers

Beneficial for tasks requiring deep language understanding.

Less suited for

Casual Users

High cost and complexity may not justify usage.

Budget-Conscious Users

API usage is expensive compared to other models.

User reviews

3.8

Editorial score

5
45%
4
26%
3
8%
2
5%
1
1%

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
  • OpenAI Developer Playground
  • Microsoft Azure OpenAI Service

Details

Category

Developer

Price

  • Retired
  • Previously $200/month for Pro plan
  • API usage $75–$150 per million tokens

Free version

No

Best for

  • Content generation and summarization
  • Code assistance and debugging
  • Conversational AI development

Frequently asked questions

ChatGPT 4.5

ChatGPT 4.5

Developer

Ready to get started?

Visit the ChatGPT 4.5 website to explore plans and pricing.

Was this page helpful?

Compare Best AI may earn a commission when you click links on this page. This does not influence our editorial scores or recommendations. Advertiser disclosure