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OpenAI: GPT-5.4 Mini

🇺🇸 OpenAI · GPT-5.4 Mini

Input Price $0.750 per million tokens NT$24.0
Output Price $4.50 per million tokens NT$144
Context Window 400K tokens Output limit: 128K
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Overview

OpenAI: GPT-5.4 Mini is a large language model API from OpenAI, part of its GPT-5.4 Mini model family. Priced at $0.750 per million input tokens and $4.50 per million output tokens, it occupies the mid-range, balancing capability against running cost. Output tokens cost about 6× as much as input, so prompt-heavy workloads run noticeably cheaper than generation-heavy ones. A large 400K-token context window (≈600 pages of text) lets it take in whole books, large codebases, or lengthy transcripts in a single call. Beyond plain text it also accepts File, Image input, so it can be applied to multimodal tasks rather than text alone. On Artificial Analysis's Intelligence Index it scores 40 (B grade), a useful proxy for its general reasoning strength relative to the other models tracked here. All prices on this page reflect OpenRouter's routed rates and are re-synced automatically every day; confirm against the provider's official pricing before committing to production.

Dimension Unit Price (USD) Price (TWD) Effective From
Input per 1M tokens $0.750 NT$24.0
Output per 1M tokens $4.50 NT$144
Cached Input per 1M tokens $0.075 NT$2.4
Web Search per search $0.010 NT$0.32

Provider
OpenAI
Model Family
GPT-5.4 Mini
Version String
openai/gpt-5.4-mini
Status
Active
Modality
File, Image, Text
Context Window
400,000 tokens
Output Limit
128,000 tokens

Index Metrics

Cross-domain capability indexes evaluated by Artificial Analysis — Artificial Analysis

Agentic Index 30 C Measured: 2026-07-01
Coding Index 56 S Measured: 2026-07-01
Intelligence Index 40 B Measured: 2026-07-01

Benchmark Scores

Data source: Artificial Analysis

AA-LCR 69.3% B Measured: 2026-07-01
GPQA Diamond 87.5% S Measured: 2026-07-01
HLE 26.7% A Measured: 2026-07-01
IFBench 73.3% B Measured: 2026-07-01
MMMU Pro 73.3% B Measured: 2026-07-01
Non-Hallucination 10.2% Measured: 2026-07-01
Omniscience Accuracy 37.5% Measured: 2026-07-01
SciCode 49.9% A Measured: 2026-07-01
Tau2 83.3% Measured: 2026-07-01
TerminalBench 52.3% Measured: 2026-07-01

Performance Metrics

Real-world benchmarks, updated every 72 hours by Artificial Analysis — Artificial Analysis

First Token Latency 7.0s Measured: 2026-07-01
Output Speed 176 t/s Measured: 2026-07-01
Response Time 9.8s Measured: 2026-07-01

Use Case Analysis

Model strengths, weaknesses, and ideal use cases based on benchmarks and official documentation

Strength

  • Fast & Capable 2x faster than GPT-5 mini while significantly improving coding, reasoning, and tool use. Official
  • Strong Coding SWE-bench Pro 54.4%, approaches GPT-5.4 performance while running much faster. Official

Best For

  • Developer Copilots Latency-sensitive coding help, code review suggestions, and fast iteration loops. Official
  • Subagent Workflows Delegate narrower subtasks to GPT-5.4 mini while larger models handle planning. Official

90-Day Price Trend

Input / Output price (USD per 1M tokens)

Past 90 days of records; every price change is shown here

Date Dimension Price (USD) Source
Web Search $0.010 OpenRouter
Cached Input $0.075 OpenRouter
Output $4.50 OpenRouter
Input $0.750 OpenRouter
Web Search $0.010 OpenRouter
Cached Input $0.075 OpenRouter
Output $4.50 OpenRouter
Input $0.750 OpenRouter
Web Search $0.010 OpenRouter
Cached Input $0.075 OpenRouter
Output $4.50 OpenRouter
Input $0.750 OpenRouter
Web Search $0.010 OpenRouter
Cached Input $0.075 OpenRouter
Output $4.50 OpenRouter
Input $0.750 OpenRouter
Web Search $0.010 OpenRouter
Cached Input $0.075 OpenRouter
Output $4.50 OpenRouter
Input $0.750 OpenRouter
Web Search $0.010 OpenRouter
Cached Input $0.075 OpenRouter
Output $4.50 OpenRouter
Input $0.750 OpenRouter
Web Search $0.010 OpenRouter
Cached Input $0.075 OpenRouter
Output $4.50 OpenRouter
Input $0.750 OpenRouter
Web Search $0.010 OpenRouter
Cached Input $0.075 OpenRouter
Output $4.50 OpenRouter
Input $0.750 OpenRouter
Web Search $0.010 OpenRouter
Cached Input $0.075 OpenRouter
Output $4.50 OpenRouter
Input $0.750 OpenRouter
Web Search $0.010 OpenRouter
Cached Input $0.075 OpenRouter
Output $4.50 OpenRouter
Input $0.750 OpenRouter
Web Search $0.010 OpenRouter
Cached Input $0.075 OpenRouter
Output $4.50 OpenRouter
Input $0.750 OpenRouter
Web Search $0.010 OpenRouter
Cached Input $0.075 OpenRouter
Output $4.50 OpenRouter
Input $0.750 OpenRouter
Web Search $0.010 OpenRouter
Cached Input $0.075 OpenRouter

Key Insights

Key data points from this page for quick reference and citation.

  • OpenAI: GPT-5.4 Mini Input price: $0.75/M tokens
  • OpenAI: GPT-5.4 Mini Output price: $4.5/M tokens
  • Context window: 400,000 tokens
  • Provider: OpenAI
  • Model family: GPT-5.4 Mini
  • Modalities: File, Image, Text
  • Data source: OpenRouter, updated daily