Comprehensive side-by-side LLM comparison
Gemini 2.5 Pro offers 814.1K more tokens in context window than o3-pro. Gemini 2.5 Pro is $88.75 cheaper per million tokens. Both models have their strengths depending on your specific coding needs.
Gemini 2.5 Pro was developed as Google's most intelligent AI model, designed to comprehend vast datasets and challenging problems from diverse information sources including text, audio, images, and video. Built to handle complex reasoning and multi-step problem solving, it represents Google's flagship offering for enterprise and advanced applications.
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.
21 days newer

Gemini 2.5 Pro
2025-05-20

o3-pro
OpenAI
2025-06-10
Cost per million tokens (USD)

Gemini 2.5 Pro

o3-pro
Context window and performance specifications
o3-pro
2024-05-31
Gemini 2.5 Pro
2025-01-31
Available providers and their performance metrics

Gemini 2.5 Pro
ZeroEval


Gemini 2.5 Pro

o3-pro

Gemini 2.5 Pro

o3-pro
o3-pro
OpenAI