All OpenAI models

GPT-5 Nano

OpenAI · released August 2025

GPT-5 Nano is a OpenAI model with a 400K token context window — about 570 pages of text. It reads Text, Images, and Files and replies in Text. It can show its reasoning before it answers.

$0.058

input / 1M tokens

$0.460

output / 1M tokens

400K

context — about 570 pages

0.07¢

a client proposal

Pricing

Input
$0.058 per million tokens
Output
$0.460 per million tokens
Cached input
$0.0057 per million tokens
Web search
1.1¢ per search

Billed from your Alyph wallet. Prices can change when the provider changes theirs — last checked August 9, 2026.

The numbers

Provider
OpenAI
Released
August 2025 (2025-08-07)
Context window
400K tokens — about 570 pages
Max output
128K tokens per reply
Input
Text, Images, and Files
Output
Text
Reasoning
Shows its thinking before answering
Knowledge cutoff
2024-05-31

Cost vs Token Amount

Drag the slider to adjust the split between input and output workload.

80% Input20% Output
free$0.07$0.140 tokens250k500k750k1000k
GPT-5 Nano

Adjust the ratio slider to change how output tokens influence the final price for equivalent workloads.

What a task costs

2K tokens in · 500 tokens out.

GPT-5 Nano

OpenAI

0.03¢

for this task

33% input · 67% output

Full pricing →

Your $5 welcome credit covers about 14,492 of these.

Compare GPT-5 Nano

Closest in price on a typical task:

GPT-5 Nano vs Qwen3 Coder 30B A3B Instruct →GPT-5 Nano vs Ministral 3 3B 2512 →GPT-5 Nano vs Reka Edge →GPT-5 Nano vs DeepSeek V4 Flash 0731 →Any other combination →

Questions, answered

How much does GPT-5 Nano cost on Alyph?

GPT-5 Nano costs $0.058 per million input tokens and $0.460 per million output tokens on Alyph. A typical task — 5K tokens in, 800 out — works out to about 0.07¢. Billed from your Alyph wallet, with hard spending limits. Prices can change when the provider changes theirs; this page was last checked on August 9, 2026.

What is GPT-5 Nano's context window?

400K tokens — about 570 pages. Replies can be up to 128K tokens long.

Can GPT-5 Nano read images and files?

GPT-5 Nano reads Text, Images, and Files. Drop a file onto the canvas and it becomes part of the context — the only limit is the context window.

Does GPT-5 Nano show its reasoning?

Yes. GPT-5 Nano can expose its thinking before the final answer, so you can watch how it got there.

Test GPT-5 Nano against Qwen3 Coder 30B A3B Instruct

One prompt, both models at the same time, the better answer wins. Free to start, with $5 of credit.

Sign up free Try the demo