GitHub Copilot
GPT-5.5
gpt
Model overview
GPT-5.5 is an AI model from GitHub Copilot with 400000 token context window and text, image input support.
Public token pricing is not listed for this model in the current catalog source.
- 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 GitHub Copilot
Family gpt
Status -
Knowledge Cutoff 2025-08-31
Release Date 2026-04-22
Input Modalities text, image
Output Modalities text
Context Window 400000
Input Limit 272000
Output Limit 128000
Tool Calling Yes
Reasoning Yes
Structured Output -
Temperature Control No
Open Weights No
Input Cost / 1M tokens -
Output Cost / 1M tokens -
Reasoning Cost / 1M tokens -
Cache Read Cost / 1M tokens -
Cache Write Cost / 1M tokens -