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 Base was created as the foundation model in the K2 series, designed to serve as a starting point for fine-tuning and customization. Built to provide strong base capabilities for domain-specific applications, it enables developers to build specialized solutions on Moonshot's architecture.
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.
1 month newer

o3-pro
OpenAI
2025-06-10

Kimi K2 Base
Moonshot AI
2025-07-11
Context window and performance specifications
o3-pro
2024-05-31
Available providers and their performance metrics

Kimi K2 Base

o3-pro
OpenAI

Kimi K2 Base

o3-pro

Kimi K2 Base

o3-pro