GPT-5.5 Pro

GPT-5.5 Pro

Developer	OpenAI
Release date	April 23, 2026
Family	GPT
Generation	GPT-5.5
Level
Context window	1.1M tokens
Max output	128K tokens
Input	File, image, text
Output	Text
Knowledge cutoff	2025-12-01
Weights	Closed
Predecessor	GPT-5.4 Pro
Website	openai.com
Links	Docs

Part of a series on

input: $30.00
output: $180.00
Context: 1.1Mtokens
Released: 6mo ago

Infrastructure

Provider availability

Provider	Endpoint	Context	Input /M tokens	Output /M tokens	Cached input /M tokens	Cache write /M tokens	Uptime 1d	Data handling
OpenAI	openai/flex	1.1M	$15.00	$90.00	—	—	—	ZDR: No Training: Unknown Prompt logging: Unknown Retention: Unknown ZDR source Privacy policy Checked 2026-11-12
OpenAI	openai/flexBatch pricing	1.1M	$15.00	$90.00	—	—	—	ZDR: No Training: Unknown Prompt logging: Unknown Retention: Unknown ZDR source Privacy policy Checked 2026-11-12
OpenAI	openai	1.1M	$30.00	$180.00	—	—	100.00%	ZDR: No Training: Unknown Prompt logging: Unknown Retention: Unknown ZDR source Privacy policy Checked 2026-11-12
OpenAI	openaiBatch pricing	1.1M	$30.00	$180.00	—	—	100.00%	ZDR: No Training: Unknown Prompt logging: Unknown Retention: Unknown ZDR source Privacy policy Checked 2026-11-12

Provider data:OpenRouter

To give you the best experience, we use cookies for personalization, insights, and performance. Learn more.