Comprehensive side-by-side LLM comparison
o3-pro supports multimodal inputs. Both models have their strengths depending on your specific coding needs.
OpenAI
o3-pro was developed as the flagship reasoning model in the o3 family, designed to deliver maximum reasoning depth and reliability for the most challenging analytical tasks. Built for professionals requiring the highest level of thoughtful problem-solving, it extends reasoning capabilities to handle complex multi-step challenges across diverse domains.
Microsoft
Phi-4 Mini was created as an even more compact variant of Phi-4, designed to bring fourth-generation capabilities to the smallest possible footprint. Built for extreme efficiency scenarios, it enables AI capabilities on devices and applications where resources are severely constrained.
4 months newer

Phi 4 Mini
Microsoft
2025-02-01

o3-pro
OpenAI
2025-06-10
Context window and performance specifications
o3-pro
2024-05-31
Phi 4 Mini
2024-06-01
Available providers and their performance metrics

o3-pro
OpenAI

Phi 4 Mini

o3-pro

Phi 4 Mini

o3-pro

Phi 4 Mini