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.
SCORES LIKE THESE MODELSGLM-5Z.ai (Zhipu AI) · Feb 2026145.85
Full Epoch Capabilities Index ranking ↗MiniMax-M2.7MiniMax · Mar 2026145.8
Kimi K2 ThinkingMoonshot · Nov 2025145.76GPT-5 miniOpenAI · Aug 2025145.52From the lab
Launch announcement · Apr 16, 2025Introducing OpenAI o3 and o4-miniRELEASE DATEApr 16, 2025
WEIGHTSClosed weights
CONTEXT WINDOW200K
MAX OUTPUT100K
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.