---
title: "GPT-5.5 Pro"
modelId: "gpt-5-5-pro-2026-04-23"
families:
  - {"id":"gpt-5-5","collection":"families"}
developer:
  id: "openai"
  collection: "orgs"
releaseDate: "2026-04-23"
---

# GPT-5.5 Pro

Canonical URL: https://ghost.fail/models/gpt-5-5-pro