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OpenAI: GPT-5 Mini

🇺🇸 OpenAI · GPT-5 Mini

Input Price $0.250 per million tokens NT$8.0
Output Price $2.00 per million tokens NT$64.0
Context Window 400K tokens Output limit: 128K
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Overview

OpenAI: GPT-5 Mini is a large language model API from OpenAI, part of its GPT-5 Mini model family. Priced at $0.250 per million input tokens and $2.00 per million output tokens, it occupies the mid-range, balancing capability against running cost. Output tokens cost about 8× 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 Image, File input, so it can be applied to multimodal tasks rather than text alone. On Artificial Analysis's Intelligence Index it scores 33 (C 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 $0.250 NT$8.0
Output per 1M tokens $2.00 NT$64.0
Cached Input per 1M tokens $0.025 NT$0.80
Web Search per search $0.010 NT$0.32

Provider
OpenAI
Model Family
GPT-5 Mini
Version String
openai/gpt-5-mini
Status
Active
Modality
Text, Image, File
Context Window
400,000 tokens
Output Limit
128,000 tokens

Index Metrics

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

Intelligence Index 33 C Measured: 2026-07-01

Benchmark Scores

Data source: Artificial Analysis

AA-LCR 68.0% B Measured: 2026-07-01
GPQA Diamond 82.8% A Measured: 2026-07-01
HLE 19.7% B Measured: 2026-07-01
IFBench 75.4% A Measured: 2026-07-01
MMMU Pro 70.1% B Measured: 2026-07-01
Non-Hallucination 45.9% Measured: 2026-07-01
Omniscience Accuracy 23.9% Measured: 2026-07-01
SciCode 39.2% B Measured: 2026-07-01
Tau2 68.4% Measured: 2026-07-01
TerminalBench 33.3% Measured: 2026-07-01

Performance Metrics

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

First Token Latency 79.3s Measured: 2026-07-01
Output Speed 95 t/s Measured: 2026-07-01
Response Time 84.6s Measured: 2026-07-01

Use Case Analysis

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

Strength

  • Cost-Efficient Reasoning $0.25 per 1M input tokens, 5x cheaper than GPT-5 while retaining reasoning capabilities. Official
  • Fast Inference Significantly faster than GPT-5. Typical TTFT under 500ms for simple queries. Official
  • Strong Coding SWE-bench Verified 71%, Aider polyglot 71.6%. Excellent for code generation and review. Official

Best For

  • Production Chatbots Fast responses, good reasoning, affordable at scale. 400K context handles long conversation histories. Official
  • RAG Pipelines As generation component in retrieval-augmented generation systems. Balances quality and cost. Official

Not Recommended

  • Complex Mathematical Reasoning For AIME-level math or advanced logic, use GPT-5 with higher reasoning effort. 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 $0.025 OpenRouter
Output $2.00 OpenRouter
Input $0.250 OpenRouter
Web Search $0.010 OpenRouter
Cached Input $0.025 OpenRouter
Output $2.00 OpenRouter
Input $0.250 OpenRouter
Web Search $0.010 OpenRouter
Cached Input $0.025 OpenRouter
Output $2.00 OpenRouter
Input $0.250 OpenRouter
Web Search $0.010 OpenRouter
Cached Input $0.025 OpenRouter
Output $2.00 OpenRouter
Input $0.250 OpenRouter
Web Search $0.010 OpenRouter
Cached Input $0.025 OpenRouter
Output $2.00 OpenRouter
Input $0.250 OpenRouter
Web Search $0.010 OpenRouter
Cached Input $0.025 OpenRouter
Output $2.00 OpenRouter
Input $0.250 OpenRouter
Web Search $0.010 OpenRouter
Cached Input $0.025 OpenRouter
Output $2.00 OpenRouter
Input $0.250 OpenRouter
Web Search $0.010 OpenRouter
Cached Input $0.025 OpenRouter
Output $2.00 OpenRouter
Input $0.250 OpenRouter
Web Search $0.010 OpenRouter
Cached Input $0.025 OpenRouter
Output $2.00 OpenRouter
Input $0.250 OpenRouter
Web Search $0.010 OpenRouter
Cached Input $0.025 OpenRouter
Output $2.00 OpenRouter
Input $0.250 OpenRouter
Web Search $0.010 OpenRouter
Cached Input $0.025 OpenRouter
Output $2.00 OpenRouter
Input $0.250 OpenRouter
Web Search $0.010 OpenRouter
Cached Input $0.025 OpenRouter
Output $2.00 OpenRouter
Input $0.250 OpenRouter
Web Search $0.010 OpenRouter
Cached Input $0.025 OpenRouter

Key Insights

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

  • OpenAI: GPT-5 Mini Input price: $0.25/M tokens
  • OpenAI: GPT-5 Mini Output price: $2/M tokens
  • Context window: 400,000 tokens
  • Provider: OpenAI
  • Model family: GPT-5 Mini
  • Modalities: Text, Image, File
  • Data source: OpenRouter, updated daily