GPT-5.5 Instant becomes ChatGPT's default model
OpenAI released GPT-5.5 Instant, replacing GPT-5.3 Instant, with search that can reference past chats, files and Gmail.
What's new
OpenAI released GPT-5.5 Instant, now the default model in ChatGPT, replacing GPT-5.3 Instant.
Benchmarks
| Test | GPT-5.5 Instant | Previous model |
|---|---|---|
| AIME 2025 | 81.2 | 65.4 |
| MMMU-Pro | 76 | 69.2 |
Features
- Search can reference past chats, files and Gmail.
- ChatGPT now shows which memory sources it used.
- API name: chat-latest.
Availability
- First for Plus and Pro users on the web.
- Free, Go, Business and enterprise users in the coming weeks.
- GPT-5.3 stays available to paid users for three months.
Founder and editor-in-chief of Kurd Developers. Phone and tech news on YouTube, Instagram and TikTok.
More stories
One text can break your phone: Android's 'SMS of Death' explained
A flaw in Android 12 and later lets a specially crafted SMS drop calls and even make a phone unusable. The fix is in October's security patch.
GTA VI lands November 19: prices, editions and what to know
Rockstar has locked the date: Thursday, November 19 on PS5 and Xbox Series X|S. Standard costs $79.99 and Ultimate $99.99.
Apple's first touchscreen MacBook Pro brings OLED and Dynamic Island
The new PROLED XDR display responds to touch, the notch is gone and Dynamic Island takes its place. Prices start at $2,899.
The $1,999 iPhone Duo Has a Black-Bar Problem, and Fixing It Is Harder Than It Looks
Apple's first foldable is a hardware flex. But unfold it and many of your apps shrink into a phone-shaped window floating in black. Here's why the app world wasn't ready, and why developers can't just hit "stretch".