Comprehensive side-by-side LLM comparison
GPT-5 Mini offers 288.4K more tokens in context window than GPT-4o. GPT-4o is $12.50 cheaper per million tokens. Both models have their strengths depending on your specific coding needs.
OpenAI
GPT-4o, released by OpenAI in May 2024, is a multimodal large language model from the GPT-4 family that natively processes text, image, and audio inputs in a single end-to-end model. It features a 128K token context window and demonstrated competitive performance across coding, reasoning, and vision benchmarks at its release. GPT-4o targets general-purpose assistant applications, vision-enabled workflows, and use cases requiring low-latency multimodal understanding.
OpenAI
GPT-5 mini, released by OpenAI in August 2025, is a smaller variant from the GPT-5 family that inherits GPT-5's unified reasoning architecture and multimodal capabilities at a reduced inference cost. It targets high-volume production use cases requiring a balance of intelligence and response speed, offering GPT-5 capabilities for applications where full GPT-5 inference costs are a concern.
1 year newer

GPT-4o
OpenAI
2024-05-13

GPT-5 Mini
OpenAI
2025-08
Cost per million tokens (USD)
GPT-4o
GPT-5 Mini
Context window and performance specifications
GPT-4o
2024-04
Available providers and their performance metrics
GPT-4o
OpenAI
GPT-5 Mini
GPT-4o
GPT-5 Mini
GPT-4o
GPT-5 Mini
OpenAI