Comprehensive side-by-side LLM comparison
GPT-5 leads with 8.2% higher average benchmark score. Gemini 2.5 Pro offers 586.1K more tokens in context window than GPT-5. Both models have similar pricing. Overall, GPT-5 is the stronger choice for coding tasks.
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
GPT-5 represents the next generation of OpenAI's foundational models, developed to advance the frontier of AI capabilities in reasoning, knowledge, and general intelligence. Built to push beyond the limitations of GPT-4, it incorporates architectural and training improvements designed to enhance performance across diverse tasks and domains.
2 months newer

Gemini 2.5 Pro
2025-05-20

GPT-5
OpenAI
2025-08-07
Cost per million tokens (USD)

Gemini 2.5 Pro

GPT-5
Context window and performance specifications
Average performance across 6 common benchmarks

Gemini 2.5 Pro

GPT-5
Performance comparison across key benchmark categories

Gemini 2.5 Pro

GPT-5
GPT-5
2024-09-30
Gemini 2.5 Pro
2025-01-31
Available providers and their performance metrics

Gemini 2.5 Pro
ZeroEval


Gemini 2.5 Pro

GPT-5

Gemini 2.5 Pro

GPT-5
GPT-5
OpenAI
ZeroEval