Comprehensive side-by-side LLM comparison
GPT-5 leads with 14.6% higher average benchmark score. Gemini 2.5 Pro offers 575.4K more tokens in context window than GPT-5. Gemini 2.5 Pro is $138.75 cheaper per million tokens. Overall, GPT-5 is the stronger choice for coding tasks.
Google DeepMind
Gemini 2.5 Pro, released by Google in May 2025, is a large language model from the Gemini 2.5 family designed for complex reasoning, coding, and long-context analysis tasks. It features a 1M token context window, native support for text, image, video, and audio input, and integrated thinking capabilities for multi-step problem solving. Gemini 2.5 Pro targets advanced coding workflows, scientific reasoning, and applications requiring deep understanding across large, mixed-modality contexts.
OpenAI
GPT-5, released by OpenAI on August 7, 2025, is a large language model that combines direct generation and extended reasoning in a single unified system with a built-in routing mechanism. It features a 400K token context window, 128K maximum output tokens, native multimodal support (text, image, audio, video), and demonstrated strong results across coding, mathematics, visual understanding, and health benchmarks at release. GPT-5 targets complex multi-step tasks including advanced coding, mathematical problem solving, and long-context analysis.
2 months newer

Gemini 2.5 Pro
Google DeepMind
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
2025-05
Available providers and their performance metrics
Gemini 2.5 Pro
Google Cloud Vertex AI
GPT-5
Gemini 2.5 Pro
GPT-5
Gemini 2.5 Pro
GPT-5
GPT-5
OpenAI