# OpenAI launches GPT‑6 Astra Ultrafast on NVIDIA Blackwell GPUs

> The new Astra Ultrafast mode is now in the OpenAI API, delivering up to eight times faster token generation for eligible users.

Oossa · 2026-10-02 · https://oossa.com/en/openai-launches-gpt-6-astra-ultrafast-on-nvidia-blackwell-gpus

OpenAI has added a new performance mode called Astra Ultrafast to its GPT‑6 model. It runs on NVIDIA’s Blackwell graphics chips and is already accessible through the OpenAI API for users of the ChatGPT Work and Codex plans. The company says the mode can generate tokens up to eight times faster than the standard Astra setting, making interactive AI applications feel more responsive.

## Why speed matters for developers

Faster token generation shortens the loop when an AI‑assistant writes code, calls a tool, checks the result and decides the next step. OpenAI’s inference lead, Philippe Tillet, notes that the speed boost helps agents finish edit‑test‑debug cycles more quickly. The acceleration also reduces latency costs, which can matter when many calls are made in a single workflow.

## How NVIDIA’s hardware supports the gain

OpenAI credits NVIDIA’s “deep investment in tooling and documentation” for allowing them to write high‑performance kernels that exploit the Blackwell architecture. The company also uses its own models to continuously improve the inference software that runs on the GPUs, meaning performance may keep improving after launch.

## The facts

- Astra Ultrafast runs on NVIDIA Blackwell GPUs.
- The mode is available now in the OpenAI API for eligible ChatGPT Work and Codex users.
- OpenAI says Ultrafast can be up to 8× faster at token generation than the standard Astra mode.
- Philippe Tillet is the inference lead at OpenAI and commented on the partnership with NVIDIA.
- OpenAI provides a guide with pricing and implementation details for developers.

## Why it matters

Developers who build code‑generation tools can see noticeably quicker responses, speeding up the edit‑test‑debug cycle. Faster loops also lower the time users wait for AI‑driven features in apps, improving the overall experience. How much the lower latency will reduce costs for end‑users remains to be seen.

## Sources & references

1. [How NVIDIA GPUs Help Accelerate OpenAI’s GPT-6 Astra Ultrafast](https://blogs.nvidia.com/blog/gpus-openai-gpt-6-astra-ultrafast/) – NVIDIA, 2026-10-01

Last updated: 2026-10-02