GPT-5 Pro

Higher-accuracy GPT-5 tier for tough analysis, coding reviews, and planning

ECI STANDING#43 of 266
SCORE150.29148.83–152.9 CI
FRONTIER LAGLaunched in the leadNothing released before it had scored higher.
Full Epoch Capabilities Index ranking
RELEASE DATEOct 6, 2025
WEIGHTSClosed weights
CONTEXT WINDOW400K
MAX OUTPUT272K
REASONINGYes
TOOL CALLINGYes
INPUTStext, image
OUTPUTStext

Specifications from Models.dev. Availability and limits may differ by provider. Benchmark scores come from Epoch AI under CC BY 4.0.