GPT-5.6 Terra
OpenAI
openai/gpt-5.6-terraGPT-5.6 Terra is the balanced, everyday tier of OpenAI's GPT-5.6 family, offering coding, reasoning, and agentic performance competitive with GPT-5.5 at roughly half the cost.
Cost rate
2x
Context
1.1M
Released
Jul 9, 2026
Input
FileImageText
Output
Text
Support
ReasoningTool callingStructured outputs
Best at
The categories where this model ranks highest.
Document analysis
#10 · top 26%
Legal & Government
#28 · top 8%
Image understanding
#29 · top 20%
Mathematical
#31 · top 8%
Performance
Median latency and throughput measured across recent requests.
Throughput98 tok/s
Latency