whichLlmmodel
Back to Dashboard
Text ModelProprietary

GPT-5.6 Terra

by OpenAI

Analysis by:the whichllmmodel Editorial Team|Updated: June 2026

Benchmark Evaluations

CodingSWE-bench Pro
63.4%
ReasoningGPQA Diamond
92.9%

Pricing Details

Input Cost
$2.50
per 1M tokens
Output Cost
$15.00
per 1M tokens
Blended Cost
$5.63
based on 3:1 ratio
Context Window
1.05M tokens

Want to test this model?

Compare GPT-5.6 Terra dynamically against other top AI models on our comparison dashboard to optimize your choice.

Go to Dashboard

Quick Info

  • ProviderOpenAI
  • CategoryText / Chat
  • LicenseProprietary
  • AvailabilityAPI Only
  • WebsiteVisit Website ↗

Frequently Asked Questions about GPT-5.6 Terra

GPT-5.6 Terra has a blended cost of $5.63 per 1 million tokens (calculated using a standard 3:1 input-to-output token ratio). Its specific pricing is $2.50 per 1M input tokens and $15.00 per 1M output tokens.

GPT-5.6 Terra supports a context window of 1.05M tokens. This allows it to process large documents, codebase segments, or long chat histories in a single query session.

GPT-5.6 Terra scores 63.4% on coding evaluations (swe-bench-pro) and 92.9% on reasoning tasks (gpqa-diamond).

GPT-5.6 Terra is an proprietary model developed by OpenAI.

Model Release Alerts

Get notified when new models drop that run on your hardware. Zero spam.