ModelOpenAI · Joined Aug 7, 2025 · GPT-5.x

GPT-5 nano

Model at OpenAI

Coming up Dec 11, 2026, in 40 days: GPT-5 and o3 snapshots to shut down December 11

127th of 270 on Epoch Capabilities Index
Cheapest of 5 similar models by price

GPT-5 nano does not have a researched profile yet. Everything here comes from its recorded changes and public listings, each linked to its source.

The basics

As of Nov 1

Status: Available
Price: $0.05 in, $0.40 outPer 1M tokens, since Aug 7
Context: 400K tokens
Open weights: No

Updates

Jun 11

Retiring

GPT-5 and o3 snapshots to shut down December 11

The August 2025 GPT-5, GPT-5 mini, GPT-5 nano, GPT-5 Pro, o3 and o3-pro snapshots will be removed on December 11, 2026, with GPT-5.6 Sol, Terra or Luna as replacements.

Takes effect Dec 11, 2026 · in 40 days

Action needed:: Migrate to the listed GPT-5.6 replacement before December 11, 2026.

Full changelog, by month

Role

General-purpose model at OpenAI

GPT-5.4 nanoMar 2026 to now · 8 months
GPT-5 nano
Aug 2025 to Mar 2026 · 7 months
GPT-4.1 nanoApr 2025 to Aug 2025 · 4 months

Similar models

gpt-5-6-cyber

Model

GPT-5.6 Luna

$0.20 in, $1.20 out

GPT-5.6 Sol

$4 in, $20 out

Similar models for now. Real viewing data comes after launch.

Cost vs peers

Cheapest of 5 similar models by output price.

GPT-5 nano$0.40 out · $0.05 in
GPT-5.6 Luna$1.20 out · $0.20 in
GPT-5.6 Terra$12 out · $2 in
GPT-5.6 Sol$20 out · $4 in
GPT-5.5$30 out · $5 in

Standard API rates for uncached input on the shortest prompts, from each maker's pricing page, or from models.dev for models not researched here yet.

Where it works

Place	Type	Price per 1M tokens, in / out	Uptime
OpenAI	API host	$0.03 / $0.20	100%
Azure	API host	$0.05 / $0.40	100%

Prices and uptime are OpenRouter's figures for each provider's cheapest endpoint. Uptime covers the last 24 hours.

Benchmarks

Higher is better. Green is GPT-5 nano. Dark marks are similar models.

Independent

What people say

Reviews

No reviews yet. Be the first to review GPT-5 nano.

Used GPT-5 nano? Tell other builders what worked and what did not.

Writing habits

Creative writing · EQ-Bench, among 51 models tracked here

Slop score

14.9

Overused AI words and phrases. Less slop than 48% of tracked models.

Repetition

Repeated words and ideas. Less repetition than 88% of tracked models.

Story length

13,229

Average characters per story. Longer than 98% of tracked models.