NanoGPT lists GPT Astra Latest as a compatibility alias that resolves to GPT 6 Astra, the newest entry in OpenAI's GPT Astra text model family. The listing is filed under OpenAI's text-model catalog and was added on September 11, 2026, suggesting it is intended as a stable pointer that always reflects the latest supported Astra release rather than a separately trained model. Because the alias simply routes requests, the practical strengths, limitations, and behavior observed by users are expected to track those of the underlying GPT 6 Astra target.

The NanoGPT entry reports a 1.1 million-token context window with a 128,000-token maximum output, placing it in the very long-context tier of modern text models and making it suitable for tasks that involve digesting large documents, multi-file reasoning, or extended agentic workflows. Benchmark figures surfaced on the page, attributed to Artificial Analysis, show an Intelligence Index of 49.7, a Coding Index of 76.7, and an Agentic Index of 51.5, alongside an AutomationBench-AA workflow score of 64.6%, which together indicate balanced general reasoning with particularly strong coding and agentic capabilities. This combination of long context, solid automation scores, and high coding performance positions the alias as a practical fit for coding assistants, document-heavy analysis, and tool-using workflows that benefit from a single routed endpoint.