OpenAI's 2025 flagship — unified reasoning + multimodal model with a 400K context. Replaces the GPT-4 line as the default ChatGPT and API model.
GPT-5 is a frontier AI model from OpenAI. It costs $1.250 per million input tokens and $10.000 per million output tokens (blended $3.875/M), with a 400K-token context window.
GPT-5 costs $1.250 per million input tokens and $10.000 per million output tokens, for a blended reference rate of $3.875 per million tokens.
GPT-5 supports up to 400K tokens of context (400,000 tokens).
GPT-5 is well suited to Unified reasoning + chat, 400K context and Native vision.
GPT-5 is developed and served by OpenAI. It was released in 2025.