What does GPT-5 Nano cost?

GPT-5 Nano is priced at $0.4 output and $0.05 input (USD per 1M tokens)

How large is the context window of GPT-5 Nano?

GPT-5 Nano has a 400,000 Tokens context window with up to 128K Tokens output.

Where can I access GPT-5 Nano?

Official channels: Website and API platform.

LIVE

Model10/13Meta releases Muse Wonder AI model, claiming it can equal ChatGPTNatural News

1/73More ›Submit for Promotion

← Back to model catalog

OpenAI

GPT-5 Nano

CClosed

OpenAI's smallest and cheapest model at $0.05/$0.40 per million tokens with a 400K-token context — the lowest input price in the OpenAI lineup and roughly 40x cheaper than GPT-5.4 Mini on input.

API Pricing

Input

$0.05

Output

$0.4

Cached input

—

Peak hours

—

USD / 1M tokens

※ OpenRouter 实测（2026-10）：输入 $0.05 / 输出 $0.40（美元/百万 tokens），OpenAI 输入价最低档

Price sourceopenrouter.ai ↗developers.openai.com ↗

No price change in the last two snapshots

Price history

7 snapshots · 2026-07-25 → 2026-08-17

Current: $25Period low: $25 (2026-07-25)Period high: $25 (2026-07-25)First tracked: $25 (2026-07-25)

Specifications

Context window: 400,000 Tokens
Max output: 128K Tokens
License: Closed

Overall score

Total

40.5

Rank

#26

Tier

Data confidence

70%

Capability25

Scale35

Value88

Context44.1

Ecosystem21

Freshness35

Capabilities & use cases

Best for

超大规模分类打标
实时低延迟改写
廉价 Agent 路由前置
离线批量处理

Official links

Website ↗API platform ↗Pricing page ↗Open in comparator ↗

Same vendor

GPT-6.1 Sol GPT-6 Astra GPT-5.6 Luna GPT-5.6 Sol GPT-6 Luna GPT-5.6 Terra

FAQ

What does GPT-5 Nano cost?: GPT-5 Nano is priced at $0.4 output and $0.05 input (USD per 1M tokens)
How large is the context window of GPT-5 Nano?: GPT-5 Nano has a 400,000 Tokens context window with up to 128K Tokens output.
Where can I access GPT-5 Nano?: Official channels: Website and API platform.

Data is refreshed daily and cross-checked against two independent sources; please confirm pricing and specs on the vendor page.