Compatibility alias that routes to GPT 5.6 Sol, the flagship GPT-5.6 tier for complex reasoning, coding, and agentic workflows.
Added Mar 29, 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
Benchmarks
Benchmarks
Performance metrics and benchmarks
Sourced from Artificial Analysis.
Intelligence Index
60.9
Coding Index
77.4
Agentic Index
57.8
Reasoning
GPQA Diamond
Graduate-level scientific reasoning
94.1%
Better than 99% of models compared
HLE
Humanity's Last Exam
49.5%
Better than 99% of models compared
IFBench
Instruction-following benchmark
72.7%
Better than 90% of models compared
T²-Bench Telecom
Conversational AI agents in dual-control scenarios
85.1%
Better than 77% of models compared
AA-LCR
Long context reasoning evaluation
77.7%
Better than 95% of models compared
GDPval-AA
Economically valuable tasks
61.3%
CritPt
Research-level physics reasoning
32.3%
Coding
SciCode
Python programming for scientific computing
56.1%
Better than 98% of models compared
Terminal-Bench Hard
Agentic coding and terminal use
65.9%
Better than 99% of models compared
Knowledge
AA-Omniscience Accuracy
Proportion of correctly answered questions
59.4%
AA-Omniscience Hallucination Rate
Rate of incorrect answers among non-correct responses
92.2%
Last updated Aug 16, 2026
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