Comprehensive side-by-side LLM comparison
o3-pro supports multimodal inputs. Both models have their strengths depending on your specific coding needs.
Moonshot AI
Kimi K2 Instruct-0905 represents a specific release iteration of the K2 Instruct model, developed to incorporate refinements and improvements. Built to provide enhanced instruction-following based on deployment feedback, it continues the evolution of Moonshot's instruction-tuned offerings.
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.
2 months newer

o3-pro
OpenAI
2025-06-10

Kimi K2-Instruct-0905
Moonshot AI
2025-09-05
Context window and performance specifications
o3-pro
2024-05-31
Available providers and their performance metrics

Kimi K2-Instruct-0905

o3-pro
OpenAI

Kimi K2-Instruct-0905

o3-pro

Kimi K2-Instruct-0905

o3-pro