Comprehensive side-by-side LLM comparison
o3 leads with 23.3% higher average benchmark score. o3 offers 106.5K more tokens in context window than o1-mini. o3 is $5.00 cheaper per million tokens. o3 supports multimodal inputs. Overall, o3 is the stronger choice for coding tasks.
OpenAI
o1-mini was created as a faster, more cost-effective reasoning model, designed to bring extended thinking capabilities to applications with tighter latency and budget constraints. Built to excel particularly in coding and STEM reasoning while maintaining affordability, it provides a more accessible entry point to reasoning-enhanced AI assistance.
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.
7 months newer

o1-mini
OpenAI
2024-09-12

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

o1-mini

o3
Context window and performance specifications
Average performance across 1 common benchmarks

o1-mini

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

o1-mini
Azure
OpenAI


o1-mini

o3

o1-mini

o3
o3
OpenAI