---
title: "GPT-5.6 Terra"
modelId: "gpt-5.6-terra"
families:
  - {"id":"gpt-5-6","collection":"families"}
developer:
  id: "openai"
  collection: "orgs"
releaseDate: "2026-07-09"
links:
  announcement: {"label":"Announcement","href":"https://openai.com/index/gpt-5-6/","date":"2026-07-09"}
  systemCard: {"label":"System Card","href":"https://deploymentsafety.openai.com/gpt-5-6","date":"2026-06-26"}
  docs: {"label":"OpenAI API","href":"https://developers.openai.com/api/docs/models/gpt-5.6-terra","date":"2026-07-09"}
surfaces:
  - {"surface":{"id":"openai","collection":"surfaces"},"releaseDate":"2026-07-09","requestable":false}
trainingDataCutoff: "2026-02-16"
contextWindow: 1050000
maxOutput: 128000
pricing:
  input: 2.5
  output: 15
toolUse: true
capabilities:
  thinking: {"supported":true}
  structured_outputs: {"supported":true}
---

# GPT-5.6 Terra

Canonical URL: https://ghost.fail/models/gpt-5-6-terra