GPT-5.5 model ID, context window & pricing
gpt
Quick facts
Model ID gpt-5.5
Source Xpersona
Context Window 1050000
Pricing $1.50 input / $12.00 output per 1M tokens
Capabilities tool calling, reasoning, structured output
Model overview
GPT-5.5 is an AI model from Xpersona with 1050000 token context window and text, image input support.
Published pricing is $1.50 input and $12.00 output per 1M tokens.
- Workloads that use text, image 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
Provider Xpersona
Family gpt
Status -
Knowledge Cutoff 2025-12-01
Release Date 2026-04-23
Input Modalities text, image
Output Modalities text
Context Window 1050000
Input Limit -
Output Limit 128000
Tool Calling Yes
Reasoning Yes
Structured Output Yes
Temperature Control No
Open Weights No
Input Cost / 1M tokens $1.50
Output Cost / 1M tokens $12.00
Reasoning Cost / 1M tokens $12.00
Cache Read Cost / 1M tokens $0.15
Cache Write Cost / 1M tokens -