What is GPT 5.4 Nano?

GPT 5.4 Nano is the most lightweight and cost-efficient variant of the GPT-5.4 family, optimized for speed-critical and high-volume tasks. It supports up to 400K of input context for long documents, codebases, and agent workflows.

What is the context length of GPT 5.4 Nano?

GPT 5.4 Nano has a recorded input context length of 400,000 tokens.

What providers serve GPT 5.4 Nano, and can I use it via API?

GPT 5.4 Nano is available through the Phaseo API, with 3 active providers currently recorded. Recorded providers include Abacus, Azure, CrossModel, DigitalOcean, FastRouter, GMICloud, Kilo Gateway, and Merge Gateway and 10 more.

Does GPT 5.4 Nano support tool calling?

Yes. At least one active provider route for GPT 5.4 Nano currently advertises tool calling support. Provider support can vary, so requests are routed only to compatible routes.

Does GPT 5.4 Nano support structured outputs?

Yes. At least one active provider route for GPT 5.4 Nano currently advertises structured outputs support. Provider support can vary, so requests are routed only to compatible routes.

GPT 5.4 Nano API Pricing — Compare 18 Providers

Providers

API providers, route pricing, availability, and recent reliability signals.

Performance

Latency, throughput, and reliability signals from recent traffic.

Pricing

Effective prices over the last 30 days, with current provider list prices for context.

Benchmarks

Activity

Daily gateway activity over the last 30 days, with current UTC-day pace projection.

Apps Using This Model

Public apps observed in gateway usage for this model.

Model Uptime

Uptime trend for this model over the last 24 hours.

About

Key dates, capabilities, and model metadata.

Subscriptions

Commercial plans and bundled access that currently include this model.

GPT 5.4 Nano API Pricing — Compare 18 Providers | Phaseo

Providers

API providers, route pricing, availability, and recent reliability signals.


OpenAI(Standard)	$0.2	$1.25	$0.02	--	--	--

Azure	$0.2	$1.25	$0.02	--	--	--

OpenAI (EU)(Standard)	$0.22	$1.375	$0.022	--	--	--

DigitalOcean	$0.2	$1.25	$0.02	--	--	--

GMICloud	--	--	--	--	--	--

Performance

Hourly latency and throughput from the past seven days.

No gateway telemetry in the past 7 days

Hourly charts will appear when this model processes gateway traffic in the selected location.

Pricing

Weighted provider pricing over the last 30 days, with recent route pricing history below.

Effective pricing

Weighted by observed usage over the last 30 days. Every provider with recorded pricing is included.

Weighted input price

$0.2

Per 1M tokens

Weighted output price

$1.25

Per 1M tokens

Price history

USD per 1M tokens · 30-day rolling effective prices · exact UTC list changes

Service tierStandardFlexBatch


OpenAI	$0.2	$1.25	$0.2	$1.25	0.0%
Azure	--	--	$0.2	$1.25	--
DigitalOcean	--	--	$0.2	$1.25	--
GMICloud	--	--	--	--	--
OpenAI (EU)	--	--	$0.22	$1.375	--

Benchmarks

Artificial Analysis

Independent evaluations · Index v4.3

Model configuration

View full leaderboard Source: Artificial Analysis

Apps Using This Model

Public apps observed in gateway usage for this model.

AI Stats

ai-stats.phaseo.app

50.4K tokens

AI Stats Chat

ai-stats.phaseo.app

8.8K tokens

Phaseo

phaseo.app

5.7K tokens

Apps Using This Model

Public apps observed in gateway usage for this model.

Model Uptime

Uptime trend for this model over the last 24 hours.

100.0%

Last 24 hours

Phaseo Routing 100.0%

About

Key dates, capabilities, and model metadata.

Announcement

17 Mar 2026·6 months ago

Release

17 Mar 2026·6 months ago

Deprecation

Not listed

Retirement

Not listed

Parameters

Not listed

License

Proprietary

Training Tokens

Not listed

Input

TextImage

Output

Text

Related models

Previous model

gpt-5-nano-2025-08-07

View model family

Subscriptions

Commercial plans and bundled access that currently include this model.

GitHub

2 plans available

From $39 monthly

GitHub Copilot Pro+

$39monthly

GitHub Copilot Max

$100monthly

Providers

Performance

Pricing

Benchmarks

Activity

Apps Using This Model

Model Uptime

About

Subscriptions

Providers

Performance

Pricing

Benchmarks

Activity

Apps Using This Model

Model Uptime

About

Subscriptions

OpenAI: GPT 5.4 Nano

Providers

Performance