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Official Source· NVIDIA AI Blog· Published Oct 2, 2026

NVIDIA Says Blackwell GPUs Help GPT-6 Astra Ultrafast Reach Up to 8× Faster Token Generation

NVIDIA says GPT-6 Astra Ultrafast runs on NVIDIA Blackwell GPUs and is available through the OpenAI API and to eligible ChatGPT Work and Codex users, offering up to 8× faster token generation than Astra Standard.

NVIDIA Says Blackwell GPUs Help GPT-6 Astra Ultrafast Reach Up to 8× Faster Token Generation

Full Report

NVIDIA says GPT-6 Astra Ultrafast runs on Blackwell GPUs and is accelerated through ongoing inference optimizations using OpenAI's own models. The mode is available through the OpenAI API and to eligible ChatGPT Work and Codex users.

According to NVIDIA, Ultrafast can deliver up to 8× faster token generation than Astra Standard, with benefits for code generation, tool use and interactive applications. NVIDIA also says OpenAI is using its own models to help optimize inference software running on NVIDIA GPUs, with the goal of improving response speed and infrastructure productivity over time.

Why This Matters

Faster token generation can reduce latency across coding agents, tool calls and interactive workflows. The “up to 8×” figure is NVIDIA's stated performance claim and should be interpreted in the context of its measurements and OpenAI's actual access conditions.

Evidence

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Primary Evidence

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  • OfficialNVIDIA AI BlogDocumentOriginal

    How NVIDIA GPUs Help Accelerate OpenAI’s GPT-6 Astra Ultrafast

    Dion Harris

    “GPT-6 Astra Ultrafast, running on NVIDIA Blackwell GPUs, is available now in the OpenAI API and to eligible ChatGPT Work and Codex users. Accelerated by inference optimizations through OpenAI’s models that tap into the capabilities of the NVIDIA Blackwell architecture, Ultrafast offers up to 8x faster token generation than the Astra Standard mode.…”

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