Drop-in code to call this model. OpenRouter's API is OpenAI-compatible — most SDKs work by just swapping the base URL. The only thing that changes between models is the model slug below.
This model always redirects to the latest model in the OpenAI GPT family.
OpenAI GPT Latest costs $2.50/M input tokens and $15.00/M output tokens, with separate rates for Cache Read at $0.25/M tokens, Cache Write at $3.125/M tokens and Web Search at $10.00/1K calls.
OpenAI GPT Latest has a 1,050,000 token context window. It supports up to 128,000 completion tokens.
Yes. OpenAI GPT Latest accepts tools and tool_choice for function calling. It also supports structured outputs via a JSON schema in response_format.
OpenAI GPT Latest accepts files such as PDFs, images and text as input and returns text.
GPT-5.6 Luna Pro, GPT-5.6 Luna, GPT-5.6 Terra Pro and 55 more are other text models from OpenAI.
OpenAI GPT Latest was released on April 27, 2026. Its knowledge cutoff is February 16, 2026.
