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Large Language ModelsAI Coding AssistantsOpenAI BlogPublished: Oct 27, 2026, 06:00 JST

Ultrafast cuts OpenAI incident probes to 10–15 minutes

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Ultrafast cuts OpenAI incident probes to 10–15 minutes

3 Key Points

  1. What happened

    OpenAI staff say Ultrafast, a high-speed mode in Codex, now handles security incident investigations in 10 to 15 minutes, down from an hour or two, per AJ Trbojevic.

  2. Why it matters

    That speed lets engineers check multiple potential causes at once and reach a decision without splitting their attention across parallel tools.

WHO IT HITSSecurity and incident-response engineers who currently wait minutes for AI-assisted log analysis stand to gain the most, as the turnaround drops to the time it takes to ask a follow-up question.

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Context & Analysis

OpenAI is presenting this as an internal case study of how its own teams use Codex, not a product announcement. The company frames Ultrafast as fast enough that engineers can stay in a single conversation instead of switching tasks while waiting for an answer.

Beyond incident response, staff describe using the same Codex threads for daily planning and large refactors. Adam Perry keeps a running thread he calls his chief of staff, and Jeff Niu says technical debt is easier to pay down because refactors that once cost a lot happen almost instantly. Sayan Sisodiya uses Codex for browser form-filling, which he had avoided as too slow.

The through-line the body draws is behavioral, not technical: shorter waits appear to change what staff are willing to delegate or tackle, from a put-off refactor to a routine task.

FAQ
What is Ultrafast?
Ultrafast is a high-speed mode in Codex, OpenAI's AI coding tool, that OpenAI staff use for incident response.
How much faster are security investigations with Ultrafast?
AJ Trbojevic says pulling, normalizing, and contextualizing data for a security investigation now takes 10 to 15 minutes, versus an hour or two previously.
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