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GPT 5.6 Terra

At a glance

OpenAI's balanced GPT-5.6 tier — GPT-5.5-class quality for everyday work at half the price.

1.1M ctx$2.50/$15.00 per M
Agent Demos
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AI Output
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Benchmarks
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Reasoning
CodingInsufficient data
MathInsufficient data
Sources:Provider·OpenRouter· as of 2026-07-11
Reasoning & Knowledge
Graduate Science92.9%
Agentic
Terminal Tasks87.4%
Specs
1.1M
Context
128K
Max output
Jul 2026
Released
Capabilities
Vision
Audio
Reasoning
Pricing
Live pricing, shown before you run
Input$2.50/M tokens
Output$15.00/M tokens
Cache read$0.25/M tokens
Cache write$3.13/M tokens
Web search$0.01/search
Chat with GPT 5.6 TerraGo to model