OpenAI Just Upgraded ChatGPT's Default Model—Here's What GPT-5.5 Instant Actually Does

Home OpenAI Just Upgraded ChatGPT's Default Model—Here's What GPT-5.5 Instant Actually Does

Haber 1
05.05.2026  - 

OpenAI Just Upgraded ChatGPT's Default Model—Here's What GPT-5.5 Instant Actually Does

In brief GPT-5.5 Instant replaces GPT-5.3 Instant as ChatGPT’s default model starting today, rolling […]

More
Haber 1
01.05.2026  - 

OpenAI's GPT-5.5 Matches Claude Mythos in Cyberattack Capabilities: AI Security Institute

In brief GPT-5.5 can autonomously execute sophisticated cyberattacks, completing a 32-step corporate network simulation […]

More
Haber 1
25.04.2026  - 

OpenAI Releases GPT-5.5, a New Model Built to Complete Full Work Tasks on Its Own

OpenAI released GPT-5.5 on April 23, its newest frontier model and the company’s most […]

More
Haber 1
24.04.2026  - 

OpenAI Releases GPT-5.5: Faster, Smarter—And Pricier

In brief GPT-5.5 launches today for Plus, Pro, Business, and Enterprise users in ChatGPT […]

More