Comprehensive side-by-side LLM comparison
. Both models have their strengths depending on your specific coding needs.
Mistral AI
Mistral Small 3.1 24B Instruct was developed as the instruction-tuned version of the 3.1 base model, designed to deliver improved instruction-following with refinements from the updated architecture. Built to serve diverse applications with enhanced reliability, it advances the Small model line's capabilities.
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

Mistral Small 3.1 24B Instruct
Mistral AI
2025-03-17

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

Mistral Small 3.1 24B Instruct

o3-pro
OpenAI

Mistral Small 3.1 24B Instruct

o3-pro

Mistral Small 3.1 24B Instruct

o3-pro