Comprehensive side-by-side LLM comparison
GPT-5 mini leads with 22.3% higher average benchmark score. GPT-5 mini offers 334.5K more tokens in context window than o1-mini. GPT-5 mini is $12.75 cheaper per million tokens. GPT-5 mini supports multimodal inputs. Overall, GPT-5 mini is the stronger choice for coding tasks.
OpenAI
GPT-5 Mini was created as a more accessible version of GPT-5, designed to provide strong capabilities with improved efficiency and lower operational costs. Built to extend GPT-5's advancements to a broader range of applications, it balances advanced performance with practical deployment considerations.
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.
10 months newer

o1-mini
OpenAI
2024-09-12

GPT-5 mini
OpenAI
2025-08-07
Cost per million tokens (USD)

GPT-5 mini

o1-mini
Context window and performance specifications
Average performance across 1 common benchmarks

GPT-5 mini

o1-mini
GPT-5 mini
2024-05-30
Available providers and their performance metrics

GPT-5 mini
OpenAI
ZeroEval


GPT-5 mini

o1-mini

GPT-5 mini

o1-mini
o1-mini
Azure
OpenAI