Version-pinned snapshot of GPT-5.1 from the November 13, 2025 release. Use this when audits or regulated workflows require deterministic behavior.
Context Window
1.0M
Max Output
32.8K
Avg output tokens (7d)
36 tokens
Input Price (Auto)
$1.25/1M
Output Price (Auto)
$10.00/1M
Cache Read (Auto)
$0.13/1M
Capabilities
Benchmarks
Benchmarks
Performance metrics and benchmarks
Sourced from Artificial Analysis.
Intelligence Index
14.2
Reasoning
GPQA Diamond
Graduate-level scientific reasoning
64.3%
Better than 40% of models compared
HLE
Humanity's Last Exam
5.3%
Better than 34% of models compared
IFBench
Instruction-following benchmark
43.2%
Better than 47% of models compared
T²-Bench Telecom
Conversational AI agents in dual-control scenarios
46.5%
Better than 50% of models compared
AA-LCR
Long context reasoning evaluation
45.0%
Better than 43% of models compared
CritPt
Research-level physics reasoning
0.0%
Coding
Terminal-Bench Hard
Agentic coding and terminal use
22.7%
Better than 62% of models compared
LiveCodeBench
Contamination-free coding benchmark
49.4%
Better than 56% of models compared
Math
AIME 2025
American Invitational Mathematics Examination 2025
38.0%
Better than 39% of models compared
Knowledge
MMLU-Pro
Professional and academic subject knowledge
80.1%
Better than 67% of models compared
AA-Omniscience Accuracy
Proportion of correctly answered questions
29.5%
AA-Omniscience Hallucination Rate
Rate of incorrect answers among non-correct responses
90.6%
Last updated Sep 7, 2026
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