Comprehensive side-by-side LLM comparison
o3 leads with 27.5% higher average benchmark score. o3 offers 155.6K more tokens in context window than GPT-4o. o3 is $2.50 cheaper per million tokens. Overall, o3 is the stronger choice for coding tasks.
OpenAI
This updated version of GPT-4o was released with refinements to its multimodal capabilities and improved performance across text, vision, and audio tasks. Built to incorporate learnings from the initial GPT-4o deployment, it enhanced reliability and accuracy while maintaining the seamless cross-modal reasoning that defines the GPT-4o family.
OpenAI
o3 represents the next generation in OpenAI's reasoning model series, developed to advance the capabilities of deliberate, step-by-step problem solving. Built to handle increasingly complex challenges across mathematics, science, and coding, it continues the evolution of reasoning-focused AI with improved analytical depth and accuracy.
8 months newer

GPT-4o
OpenAI
2024-08-06

o3
OpenAI
2025-04-16
Cost per million tokens (USD)

GPT-4o

o3
Context window and performance specifications
Average performance across 16 common benchmarks

GPT-4o

o3
Performance comparison across key benchmark categories

GPT-4o

o3
o3
2024-05-31
Available providers and their performance metrics

GPT-4o
Azure
OpenAI


GPT-4o

o3

GPT-4o

o3
o3
OpenAI