# OpenAI Launches Cybersecurity-Specific Model GPT-5.5-Cyber

- Category: Flash (快讯)
- Published: 2026-05-09T11:52:00.000Z
- Source date: 2026-05-09
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OpenAI releases a limited preview of GPT-5.5-Cyber, optimized for security tasks via the TAC framework and available to vetted defenders.

## At a glance

- Lowers refusal rates for security tasks via the TAC framework, supporting vulnerability verification and malware analysis.
- Limited preview is accessible only to vetted defenders, maintaining protections against malicious activities.

## The update

OpenAI has officially launched a limited preview version of the GPT-5.5-Cyber model. Access is strictly reserved for vetted cybersecurity defense professionals. Built on the Trusted Access for Cyber (TAC) framework, the model leverages the robust capabilities of GPT-5.5 while significantly reducing refusal rates for security-related tasks. This optimization is designed to smoothly support critical defense workflows, such as vulnerability verification and malware analysis, thereby enhancing efficiency for professional users. At the same time, the model maintains strong protective measures against potential malicious activities, ensuring that the technology aids defense without being misused, thus balancing usability with security.

## Sources

- [OpenAI](https://openai.com/index/gpt-5-5-with-trusted-access-for-cyber) (2026-05-09)

This article is an AI-assisted synthesis by 88Z AI based on the public sources below. Product claims and availability are attributed to their publishers. It does not represent independent testing or first-hand reporting.