Lightweight GPT-5.1 Codex path.
Added Nov 13, 2025
Context Window
400.0K
Max Output
128.0K
Input Price (Auto)
$0.25/1M
Output Price (Auto)
$2.00/1M
Cache Read (Auto)
$0.025/1M
Capabilities
Performance metrics and benchmarks
Sourced from Artificial Analysis.
Intelligence Index
38.6
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Coding Index
36.4
GPQA Diamond
Graduate-level scientific reasoning
81.3%
Better than 85% of models compared
HLE
Humanity's Last Exam
16.9%
Better than 85% of models compared
IFBench
Instruction-following benchmark
67.9%
Better than 86% of models compared
T²-Bench Telecom
Conversational AI agents in dual-control scenarios
62.9%
Better than 66% of models compared
AA-LCR
Long context reasoning evaluation
62.7%
Better than 84% of models compared
SciCode
Python programming for scientific computing
42.6%
Better than 89% of models compared
Terminal-Bench Hard
Agentic coding and terminal use
33.3%
Better than 85% of models compared
AIME 2025
American Invitational Mathematics Examination 2025
91.7%
Better than 93% of models compared
MMLU-Pro
Professional and academic subject knowledge
82.0%
Better than 78% of models compared
Last updated May 15, 2026
Artificial AnalysisLiveCodeBench
Contamination-free coding benchmark
83.6%
Better than 94% of models compared
