Private AI
GPT-5.6 Terra Pro runs the balanced GPT-5.6 Terra tier with maximum reasoning for tougher coding, analysis, agentic work, and multi-step professional tasks.
Added Jul 9, 2026
Context Window
1.1M
Max Output
128.0K
Input Price (Auto)
$2.50/1M
Output Price (Auto)
$15.00/1M
Cache Read (Auto)
$0.25/1M
Capabilities
Performance metrics and benchmarks
Sourced from Artificial Analysis.
Intelligence Index
55.0
Auto routing is available for this model. Explicit provider selection is not available.
Loading provider options…
Coding Index
76.7
GPQA Diamond
Graduate-level scientific reasoning
92.5%
Better than 97% of models compared
HLE
Humanity's Last Exam
41.8%
Better than 98% of models compared
IFBench
Instruction-following benchmark
71.2%
Better than 87% of models compared
T²-Bench Telecom
Conversational AI agents in dual-control scenarios
86.3%
Better than 79% of models compared
AA-LCR
Long context reasoning evaluation
74.0%
Better than 98% of models compared
SciCode
Python programming for scientific computing
53.9%
Better than 97% of models compared
Terminal-Bench Hard
Agentic coding and terminal use
57.6%
Last updated Jul 22, 2026
Artificial AnalysisBetter than 97% of models compared
