Major Difference between ChatGPT 3.5 and ChapGPT 4 and ChatGPT 4o

Release DateNovember 2022March 2023May 2024
Model ArchitectureGPT-3.5GPT-4GPT-4o
Parameters175 billionNot publicly disclosed (estimated 500+ billion)Not publicly disclosed
Context Length4096 tokens8192 tokens (standard), 32k tokens (extended)8192 tokens (standard), 32k tokens (extended)
Multimodal CapabilitiesNoYes (text and images)Yes (text, images, and audio)
Performance ImprovementImproved reasoning and understandingFurther improved reasoning, accuracy, and efficiency
API PricingLowerHigher compared to 3.5Comparable to 4
Fine-Tuning CapabilityYesYesEnhanced fine-tuning options
Model SizeSmallerLargerComparable to 4, optimized
Use CasesGeneral purpose, text generation, etc.Enhanced reasoning, complex tasksEnhanced multimodal tasks, better performance
AccessWidely accessibleLimited initially, gradually increasedLimited initially, gradually increased
Language SupportExtensiveMore extensive, better low-resource language supportFurther improved language support
Availability in OpenAI ProductsIntegrated into various OpenAI productsIntegrated into more products, including ChatGPT PlusIntegrated into newer products and services
Contextual UnderstandingGoodBetter contextual and nuanced understandingBest contextual and nuanced understanding
Safety and Ethical StandardsStandardEnhancedFurther enhanced for safer interactions
Integration CapabilitiesBasicImprovedSeamless integration with various applications
User ExperienceStandardImproved UI/UXFurther improved UI/UX

GPT-4o (“o” for “omni”)

GPT-4o (“o” for “omni”) is a step towards much more natural human-computer interaction—it accepts as input any combination of text, audio, image, and video and generates any combination of text, audio, and image outputs. It can respond to audio inputs in as little as 232 milliseconds, with an average of 320 milliseconds, which is similar to human response time(opens in a new window) in a conversation. It matches GPT-4 Turbo performance on text in English and code, with significant improvement on text in non-English languages, while also being much faster and 50% cheaper in the API. GPT-4o is especially better at vision and audio understanding compared to existing models.

Rajesh Kumar
Follow me
Notify of
Inline Feedbacks
View all comments
Would love your thoughts, please comment.x