The cheaper version of OpenAI's newest thinking model. Fast, cheap, and with a maximum output of 100,000 words.
Context Window
200.0K
Max Output
100.0K
Input Price (Auto)
$1.10/1M
Output Price (Auto)
$4.40/1M
Cache Read (Auto)
$0.55/1M
Capabilities
Performance metrics and benchmarks
Sourced from Artificial Analysis.
Intelligence Index
25.9
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Coding Index
17.9
GPQA Diamond
Graduate-level scientific reasoning
74.8%
Better than 70% of models compared
HLE
Humanity's Last Exam
8.7%
Better than 68% of models compared
T²-Bench Telecom
Conversational AI agents in dual-control scenarios
28.7%
Better than 42% of models compared
SciCode
Python programming for scientific computing
39.9%
Better than 83% of models compared
Terminal-Bench Hard
Agentic coding and terminal use
6.8%
Better than 43% of models compared
AIME
American Invitational Mathematics Examination
77.0%
Better than 86% of models compared
Math-500
Diverse mathematical problem solving benchmark
97.3%
Better than 88% of models compared
MMLU-Pro
Professional and academic subject knowledge
79.1%
Better than 63% of models compared
Last updated May 15, 2026
Artificial AnalysisLiveCodeBench
Contamination-free coding benchmark
71.7%
Better than 82% of models compared
