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openaiopenai·Mar 17, 2026

OpenAI: GPT-5.4 Mini

openai/gpt-5.4-mini
context
400K
Max Output
128K
Input / 1M
$0.75
Output / 1M
$4.50

About

GPT-5.4 Mini brings the core capabilities of GPT-5.4 to a faster, more efficient model optimized for high-throughput workloads, running more than 2x faster than its predecessor while lowering latency and cost. It accepts text, image, and file inputs with performance across reasoning, coding, and tool use, making it suited to chat applications, coding assistants, and agent workflows that operate at scale. The model provides a 400K-token context window with up to 128K tokens of output and supports reasoning. GPT-5.4 Mini was released in March 2026.

Capabilities

Context Length
400K
Max Output
128K
Reasoning
Yes
In
file, image, text
Out
text

Benchmarks

View leaderboard
40.0#27 of 133
Intelligence Index
51.5#9 of 118
Coding Index

Reasoning & Knowledge

GPQA Diamond87.5%
HLE26.6%

Coding & Agentic

SciCode49.9%
Terminal-Bench Hard52.3%

Source: Artificial Analysis

Pricing

Full pricing
TypePrice / 1M tokens
Input$0.75
Output$4.50
Cache Read$0.075
Web Search$0.01 / call

API

API reference

OpenAI-compatible · Model ID openai/gpt-5.4-mini

curl https://api.elliotgate.com/v1/chat/completions \
  -H "Authorization: Bearer sk-omg-your-api-key" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "openai/gpt-5.4-mini",
    "messages": [{"role": "user", "content": "Hello!"}]
  }'

OFTEN COMPARED

GPT-5.4 Mini comparisons

Decide which model wins on the dimensions that matter for your workload — context, benchmarks, pricing, or serving latency.