OpenAI·GPT

GPT-5.4 mini

A fast small model for coding and subagents with text, image, tools, and a 400K context window.

CurrentReasoningCodingAgentMultimodalWeights not released

MODEL NUMBER041

Specifications

Only published specifications are shown.

Context

400K

Input modalities

Text · Image

Open weights

Status

Current

A fast small model for coding and subagents with text, image, tools, and a 400K context window.

Compared with GPT-5.4 ↗

PreviousGPT-5.4— · — ctx

CurrentGPT-5.4 mini— · 400K ctx

New capabilities Tool use Subagent

CodingComputer useTool useSubagent

2026-03-17General release

GPT-5.4 mini launched for coding and subagents.

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