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OpenAI: GPT-5 Nano

🇺🇸 OpenAI · GPT-5 Nano

Input Price $0.050 per million tokens NT$1.6
Output Price $0.400 per million tokens NT$12.8
Context Window 400K tokens
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Overview

OpenAI: GPT-5 Nano is a large language model API from OpenAI, part of its GPT-5 Nano model family. At $0.050 per million input tokens and $0.400 per million output tokens, it sits in the budget tier — among the cheaper options for high-throughput or cost-sensitive workloads. 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 20 (D 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 $0.050 NT$1.6
Output per 1M tokens $0.400 NT$12.8
Cached Input per 1M tokens $0.010 NT$0.32
Web Search per search $0.010 NT$0.32

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

Index Metrics

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

Intelligence Index 20 D Measured: 2026-07-01

Benchmark Scores

Data source: Artificial Analysis

AA-LCR 41.7% D Measured: 2026-07-01
GPQA Diamond 67.6% B Measured: 2026-07-01
HLE 8.3% C Measured: 2026-07-01
IFBench 67.5% B Measured: 2026-07-01
MMMU Pro 61.0% B Measured: 2026-07-01
Non-Hallucination 43.7% Measured: 2026-07-01
Omniscience Accuracy 18.3% Measured: 2026-07-01
SciCode 36.6% B Measured: 2026-07-01
Tau2 36.5% Measured: 2026-07-01
TerminalBench 12.1% Measured: 2026-07-01

Performance Metrics

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

First Token Latency 97.0s Measured: 2026-07-01
Output Speed 141 t/s Measured: 2026-07-01
Response Time 100.6s Measured: 2026-07-01

Use Case Analysis

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

Strength

  • Ultra-Low Cost $0.05 per 1M input tokens, 20x cheaper than GPT-5. Official
  • Fastest Inference Highest throughput in GPT-5 family. Optimized for real-time, ultra-low latency environments. Official

Best For

  • Classification & Extraction Sentiment analysis, intent detection, entity extraction, content moderation at massive scale. Official
  • Real-time Applications Routing, autocomplete, lightweight inference where latency is critical. Official

Not Recommended

  • Complex Coding Tasks For code generation or review, use GPT-5 mini or GPT-5. 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 $0.010 OpenRouter
Output $0.400 OpenRouter
Input $0.050 OpenRouter
Web Search $0.010 OpenRouter
Cached Input $0.010 OpenRouter
Output $0.400 OpenRouter
Input $0.050 OpenRouter
Web Search $0.010 OpenRouter
Cached Input $0.010 OpenRouter
Output $0.400 OpenRouter
Input $0.050 OpenRouter
Web Search $0.010 OpenRouter
Cached Input $0.010 OpenRouter
Output $0.400 OpenRouter
Input $0.050 OpenRouter
Web Search $0.010 OpenRouter
Cached Input $0.010 OpenRouter
Output $0.400 OpenRouter
Input $0.050 OpenRouter
Web Search $0.010 OpenRouter
Cached Input $0.010 OpenRouter
Output $0.400 OpenRouter
Input $0.050 OpenRouter
Web Search $0.010 OpenRouter
Cached Input $0.010 OpenRouter
Output $0.400 OpenRouter
Input $0.050 OpenRouter
Web Search $0.010 OpenRouter
Cached Input $0.010 OpenRouter
Output $0.400 OpenRouter
Input $0.050 OpenRouter
Web Search $0.010 OpenRouter
Cached Input $0.010 OpenRouter
Output $0.400 OpenRouter
Input $0.050 OpenRouter
Web Search $0.010 OpenRouter
Cached Input $0.010 OpenRouter
Output $0.400 OpenRouter
Input $0.050 OpenRouter
Web Search $0.010 OpenRouter
Cached Input $0.010 OpenRouter
Output $0.400 OpenRouter
Input $0.050 OpenRouter
Web Search $0.010 OpenRouter
Cached Input $0.010 OpenRouter
Output $0.400 OpenRouter
Input $0.050 OpenRouter
Web Search $0.010 OpenRouter
Cached Input $0.010 OpenRouter

Key Insights

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

  • OpenAI: GPT-5 Nano Input price: $0.05/M tokens
  • OpenAI: GPT-5 Nano Output price: $0.4/M tokens
  • Context window: 400,000 tokens
  • Provider: OpenAI
  • Model family: GPT-5 Nano
  • Modalities: Text, Image, File
  • Data source: OpenRouter, updated daily