Comprehensive side-by-side LLM comparison
Gemini 2.5 Pro leads with 6.2% higher average benchmark score. Gemini 2.5 Pro offers 586.1K more tokens in context window than GPT-5 nano. GPT-5 nano is $10.80 cheaper per million tokens. Overall, Gemini 2.5 Pro 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 Nano was developed as the most compact variant in the GPT-5 family, designed for deployment in resource-constrained environments and edge computing scenarios. Built to bring next-generation AI capabilities to devices and applications where latency and efficiency are paramount, it distills GPT-5 innovations into a minimal footprint.
2 months newer

Gemini 2.5 Pro
2025-05-20

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

Gemini 2.5 Pro

GPT-5 nano
Context window and performance specifications
Average performance across 3 common benchmarks

Gemini 2.5 Pro

GPT-5 nano
GPT-5 nano
2024-05-30
Gemini 2.5 Pro
2025-01-31
Available providers and their performance metrics

Gemini 2.5 Pro
ZeroEval


Gemini 2.5 Pro

GPT-5 nano

Gemini 2.5 Pro

GPT-5 nano
GPT-5 nano
OpenAI
ZeroEval