OpenAI: GPT Astra Latest

This model always redirects to the latest model in the GPT Astra family.

The GPT Astra Latest documentation on OpenRouter includes the GPT-6 Migration Guide cookbook. The quickstart covers API keys and your first request, and the API reference lists every parameter.

GPT Astra Latest has no fixed price of its own. Each request is billed at the price of the model that serves it, so your cost depends on which model the request is routed to.

GPT Astra Latest can route to models with context windows of up to 1,050,000 tokens. The context length available to a request is that of the model that serves it.

GPT Astra Latest accepts files such as PDFs, images, and text as input and returns text.

GPT-6.1 Terra Pro, GPT-6.1 Terra, GPT-6 Luna Decisions and 58 more are other text models from OpenAI.

GPT Astra Latest was released on September 11, 2026.