BETA RELEASE
Skip to main content

GPT-5.6 Terra Model

Primary documentation OpenAI
Accessed: 2026-10-10
Original source ↗ Archived copy ↗

Summary

Documentation for the GPT-5.6 Terra model, highlighting its pricing, features, and specifications.

Key quotes

GPT-5.6 Terra is designed for workloads that balance intelligence and cost.
Reasoning.effort supports: none, low, medium (default), high, xhigh, and max.
1,050,000 context window
Text tokens: Input $2.00 (cached input $0.20), Output $12.00 per 1M tokens.

This page provides detailed specifications for the GPT-5.6 Terra model, including its pricing structure, supported features like tool use and structured outputs, and rate limits for different usage tiers. It emphasizes the model’s balance between cost-efficiency and performance, targeting users seeking robust capabilities without excessive costs.