GPT-5.4 mini
Strong small GPT for coding subagents, quick tool use, and high-volume work
ECI STANDING#53 of 266
SCORE148.96147.33–150.68 CI
FRONTIER LAGLaunched 7.3 months behindScores about what GPT-5 did in August 2025.
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From the lab
Launch announcement · Mar 17, 2026Introducing GPT-5.4 mini and nanoRELEASE DATEMar 17, 2026
WEIGHTSClosed weights
CONTEXT WINDOW400K
MAX OUTPUT128K
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.