Comprehensive side-by-side LLM comparison
. Both models have their strengths depending on your specific coding needs.
Moonshot AI
Kimi K1.5 was developed by Moonshot AI as an advanced language model with extended context capabilities, designed to handle long documents and conversations. Built to excel at tasks requiring comprehension of extensive information, it represents Moonshot's approach to long-context language understanding.
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.
4 months newer

Kimi-k1.5
Moonshot AI
2025-01-20

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

Kimi-k1.5

o3-pro
OpenAI

Kimi-k1.5

o3-pro

Kimi-k1.5

o3-pro