o4-mini

Fast o-series model for compact reasoning, coding, and tool use

ECI STANDING#74 of 266
SCORE145.65143.36–147.36 CI
FRONTIER LAGLaunched in the leadNothing released before it had scored higher.
Full Epoch Capabilities Index ranking

From the lab

Launch announcement · Apr 16, 2025Introducing OpenAI o3 and o4-mini
RELEASE DATEApr 16, 2025
WEIGHTSClosed weights
CONTEXT WINDOW200K
MAX OUTPUT100K
REASONINGYes
TOOL CALLINGYes
INPUTStext, image
OUTPUTStext

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