Comprehensive side-by-side LLM comparison
Both models show comparable benchmark performance. o3 mini offers 106.5K more tokens in context window than o1 mini. Both models have similar pricing. Both models have their strengths depending on your specific coding needs.
OpenAI
OpenAI o1 mini, released by OpenAI in September 2024, is a lightweight reasoning model from the o1 family optimized for efficient STEM problem-solving at lower cost and latency. It features a 128K token context window and applies chain-of-thought reasoning specifically tuned for mathematics, science, and coding tasks. o1 mini targets use cases where rapid, cost-efficient reasoning is preferred over the broader capabilities of the full o1 model.
OpenAI
OpenAI o3 mini, released by OpenAI in January 2025, is a compact reasoning model from the o3 family designed for efficient, cost-effective STEM problem-solving. It features a 200K token context window and adjustable chain-of-thought effort settings, allowing developers to trade reasoning depth for speed. o3 mini targets science, mathematics, and coding applications where lower inference cost and faster response times are a priority.
4 months newer

o1 mini
OpenAI
2024-09-12

o3 mini
OpenAI
2025-01-31
Cost per million tokens (USD)
o1 mini
o3 mini
Context window and performance specifications
Average performance across 1 common benchmarks
o1 mini
o3 mini
Performance comparison across key benchmark categories
o1 mini
o3 mini
Available providers and their performance metrics
o1 mini
OpenAI
o3 mini
o1 mini
o3 mini
o1 mini
o3 mini
OpenAI