gpt-5.4-nano API

OpenAI gpt-5.4-nano for chat and coding; Flatkey routes this model through /v1/chat/completions. $0.16/$1 per 1M tokens 400,000-token context window.

Chat and codingLong contextTool workflows
Input /M
$0.16/ 1M tokens-20%$0.2/ 1M tokens
Cache /M
$0.016/ 1M tokens-20%$0.02/ 1M tokens
Output /M
$1/ 1M tokens-20%$1.25/ 1M tokens
Provider
OpenAI

gpt-5.4-nano API performance

gpt-5.4-nano API reliability and uptime

Live Flatkey request telemetry for gpt-5.4-nano appears here when enough production traffic is available.

Avg. provider uptime
99.80%
last 30 days
Latency
671ms
last 30 days
Requests
3.59K
30-day window
Successful inference trend

gpt-5.4-nano API activity

gpt-5.4-nano API usage and request activity

Track request volume and successful inference activity for gpt-5.4-nano over the latest reporting window.

Requests
3.59K
30-day window
Latency
671ms
last 30 days
Uptime
99.80%
last 30 days
Successful inference trendActivity

gpt-5.4-nano pricing

gpt-5.4-nano API pricing and billing

Prices below are calculated from Flatkey pricing data for this model and the visible groups currently returned by our pricing API.

Flatkey price

Input /M

Live catalog model
$0.16/ 1M tokens$0.2/ 1M tokens
Input /M
$0.16/ 1M tokens$0.2/ 1M tokens
Cache /M
$0.016/ 1M tokens$0.02/ 1M tokens
Output /M
$1/ 1M tokens$1.25/ 1M tokens
View API
Shared balance

Add credits

Add credits

Use the same Flatkey balance and API key across image, video, audio, and text models.

Model catalog
Model Type
Text
API
/v1/chat/completions
Billing basis
1M tokens

gpt-5.4-nano chat and coding: core capabilities

OpenAI's gpt-5.4-nano route supports text · image · file. Catalog categories: Programming, Marketing, SEO.

gpt-5.4-nano chat and coding API

Call gpt-5.4-nano through /v1/chat/completions for chat, coding or agent workflows supported by the model's listed modalities.

gpt-5.4-nano long-context work

gpt-5.4-nano is listed with 400,000-token; use that catalog value as an integration planning reference and validate limits for your account.

gpt-5.4-nano tool and agent workflows

Keep tool calls, structured output and streaming behavior aligned with the endpoint contract instead of assuming every provider feature is interchangeable.

gpt-5.4-nano production routing

Use one Flatkey key for gpt-5.4-nano, usage controls and model routing while retaining the exact model id in your SDK configuration.

Compare

gpt-5.4-nano API comparison: capabilities and access

Compare the catalog facts for gpt-5.4-nano with the previous-generation baseline before changing your integration.

CapabilityPrevious generationgpt-5.4-nano
ProviderNot verified in this catalog snapshotOpenAI
ModalitiesNot verified in this catalog snapshottext · image · file
ContextNot verified in this catalog snapshot400,000-token
EndpointNot verified in this catalog snapshot/v1/chat/completions
BillingNot verified in this catalog snapshot$0.16/$1 per 1M tokens

Why Flatkey

Why use Flatkey for gpt-5.4-nano?

OpenAI-compatible migration path

Chat Completions-style payloads reduce switching friction from existing model stacks.

Production routing

Keep usage, keys, quotas, and model routing in one Flatkey account.

Unified API access

Use one account and API key across image, video, audio, and language models.

Routing across upstream channels

Requests are spread across the channels serving this model, with 30-day uptime published above.

API

gpt-5.4-nano API

Four ways in, all on the same key and the same model catalog. Pick one to see a runnable example.

Call any model with an OpenAI-compatible API. Copy a ready-to-run example for your model and language.
Use the OpenAI SDK you already know — with Flatkey as the gateway.
Generate images and videos from your terminal. Let your AI assistant drive the workflow.
Connect your coding agent with one command, then use Flatkey from your existing projects.
curl https://router.flatkey.ai/v1/chat/completions \
  -H "Content-Type: application/json" \
  -H "Authorization: Bearer sk-***" \
  -d '{"model":"gpt-5.4-nano","messages":[{"role":"user","content":"Say hello in one sentence."}]}'
Docs

FAQ

gpt-5.4-nano API
pricing, features, and usage FAQs

Answers about gpt-5.4-nano pricing, capabilities, endpoint access and catalog limits.

What is gpt-5.4-nano used for?
gpt-5.4-nano is listed by OpenAI for chat and coding; the catalog lists these modalities: text · image · file.
How is gpt-5.4-nano priced?
Use the pricing section above for current Flatkey prices from our pricing API.
Which API endpoint calls gpt-5.4-nano?
Flatkey routes this model through /v1/chat/completions. Set the model field to gpt-5.4-nano and follow the fields supported by that endpoint.
What context or input limits does gpt-5.4-nano have?
gpt-5.4-nano is listed with 400,000-token. Other limits depend on the route and current account availability, so verify them before production use.