OpenAIGPT-5.5 Pro model ID, context window & pricing
gpt-pro
Quick facts
Model ID gpt-5.5-pro
Source OpenAI
Context Window 1050000
Pricing $30.00 input / $180.00 output per 1M tokens
Capabilities tool calling, reasoning, structured output
Model overview
GPT-5.5 Pro is an AI model from OpenAI with 1050000 token context window and text, image, pdf input support.
Published pricing is $30.00 input and $180.00 output per 1M tokens.
- Workloads that use text, image, pdf inputs with text outputs.
- Agent and tool workflows that need function calling.
- Reasoning-heavy prompts where stepwise problem solving matters.
Model ID gpt-5.5-pro
Provider OpenAI
Family gpt-pro
Status -
Knowledge Cutoff 2025-12-01
Release Date 2026-04-23
Input Modalities text, image, pdf
Output Modalities text
Context Window 1050000
Input Limit 922000
Output Limit 128000
Tool Calling Yes
Reasoning Yes
Structured Output Yes
Temperature Control No
Open Weights No
Input Cost / 1M tokens $30.00
Output Cost / 1M tokens $180.00
Reasoning Cost / 1M tokens -
Cache Read Cost / 1M tokens -
Cache Write Cost / 1M tokens -