ModelRadar/GPT-5.5 Pro

GPT-5.5 Pro

OpenAI🇺🇸 US
reasoningmultimodal

Strongest available GPT-5.5 variant: $30/$180 per MTok — priced on par with o3. Positioned for enterprise use at the highest demands.

At a glance

Context
1.1M tokens
Input
text, image, audio, code

Specifications

Status
Released
Date
April 25, 2026
Lab
OpenAI
Origin
US
Type
reasoning, multimodal
Open weights
License
proprietary
Context
1.1M tokens
Input
text, image, audio, code
Output
text, image, audio, code

Availability

Direct API access✓ Yes
OpenRouterYes
Open weights