GPT-5.5-Cyber

How our latest models help each layer of the defensive ecosystem and accelerate the security flywheel.

A cyber-permissive GPT-5.5 variant for specialized, authorized cybersecurity workflows, released in limited preview to vetted defenders responsible for critical infrastructure through Trusted Access for Cyber.

Pricing

Model profile · Current snapshot

Input / 1M

$0.05

Output / 1M

$0.40

Blended / 1M

$0.138

Output TPS

146

TTFT (s)

84.17

Model Intelligence

Arena ranking

Benchmarkable

Yes

Model level

release

Intelligence Index

26.8

Coding Index

20.3

Math Index

83.7

MMLU Pro

0.78

GPQA

0.68

HLE

0.08

LiveCodeBench

0.79

SciCode

0.37

AIME 2025

0.84

IFBench

0.68

LCR

0.42

TerminalBench Hard

0.12

TAU2

0.37

Recent stories

1 linked story

releasePRIMARY2026-05-07

OpenAI rolls out GPT-5.5-Cyber limited preview for critical-infrastructure defenders

OpenAI introduced GPT-5.5-Cyber in limited preview for defensive security teams and paired it with GPT-5.5 plus Trusted Access for Cyber. The release matters because OpenAI is separating cyber-specific access and permissiveness from general-model access rather than treating security work as a normal prompting mode.