Coding-focused GPT-5.3 variant with optimized routing.
Added Feb 24, 2026
Context Window
400.0K
Max Output
128.0K
Input Price (Auto)
$1.75/1M
Output Price (Auto)
$14.00/1M
Cache Read (Auto)
$0.18/1M
Capabilities
Performance metrics and benchmarks
Sourced from Artificial Analysis.
Intelligence Index
53.6
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Coding Index
53.1
GPQA Diamond
Graduate-level scientific reasoning
91.5%
Better than 99% of models compared
HLE
Humanity's Last Exam
39.9%
Better than 99% of models compared
IFBench
Instruction-following benchmark
75.4%
Better than 94% of models compared
T²-Bench Telecom
Conversational AI agents in dual-control scenarios
86.0%
Better than 82% of models compared
AA-LCR
Long context reasoning evaluation
74.0%
Better than 99% of models compared
SciCode
Python programming for scientific computing
53.2%
Better than 98% of models compared
Terminal-Bench Hard
Agentic coding and terminal use
53.0%
Better than 98% of models compared
Last updated May 15, 2026
Artificial Analysis
