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MODELS

GPT-5.6 Terra

by OpenAI

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Overview

GPT-5.6 Terra is described by OpenAI source metadata as a balanced GPT-5.6 model for everyday developer and enterprise workloads, positioned as a lower-cost option.

Details

GPT-5.6 Terra is part of OpenAI’s GPT-5.6 preview family. Supplied OpenAI metadata describes Terra as balancing capability, speed, and cost for everyday work and as a capable lower-cost option. OpenAI Help Center metadata says Terra is available in Work in ChatGPT, Codex, and the OpenAI API. OpenAI deployment-safety metadata identifies GPT-5.6 as a three-model family that includes Terra, and notes that Sol and Terra may trigger additional automated safety checks for cybersecurity or biological requests in API and Codex.

When to Use

Use when evaluating an OpenAI GPT-5.6 option that is described as balancing capability speed and cost for everyday work. Use for developer or enterprise workloads where the supplied OpenAI metadata’s lower-cost positioning for Terra is relevant. Use in ChatGPT Work Codex or OpenAI API contexts when Terra availability is supported by the referenced OpenAI Help Center metadata.

Getting Started

  1. Review the OpenAI GPT-5.6 preview page and Help Center article for Terra availability and positioning.
  2. Check the OpenAI API model documentation before integrating Terra in an application.
  3. Review the GPT-5.6 preview system card and the Help Center article on additional safety checks for cybersecurity or biological requests.
  4. Run a small API or Codex evaluation against your own everyday workload before relying on Terra in production.

Key Features

  • •Member of OpenAI’s GPT-5.6 preview family
  • •according to the supplied system-card metadata.
  • •Described as balancing capability
  • •speed
  • •and cost for everyday work.
  • •Positioned by supplied OpenAI metadata as a capable lower-cost option.
  • •Available in Work in ChatGPT
  • •Codex
  • •and the OpenAI API
  • •according to supplied OpenAI Help Center metadata.
  • •May use additional automated safety checks for cybersecurity or biological requests in API and Codex.

Capabilities

  • •general-purpose language model
  • •developer workloads via OpenAI API
  • •Codex usage
  • •ChatGPT Work usage

Last updated Jul 10, 2026